1
0
mirror of https://github.com/duke-git/lancet.git synced 2026-02-04 12:52:28 +08:00

doc: normalize documents

This commit is contained in:
dudaodong
2023-01-13 14:36:33 +08:00
parent 2c6e9a3fb9
commit 4c5524354c
12 changed files with 1800 additions and 1211 deletions

View File

@@ -1,16 +1,18 @@
# Datetime
Package datetime supports date and time format and compare.
<div STYLE="page-break-after: always;"></div>
## Source:
- [https://github.com/duke-git/lancet/blob/main/datetime/datetime.go](https://github.com/duke-git/lancet/blob/main/datetime/datetime.go)
- [https://github.com/duke-git/lancet/blob/main/datetime/conversion.go](https://github.com/duke-git/lancet/blob/main/datetime/conversion.go)
- [https://github.com/duke-git/lancet/blob/main/datetime/datetime.go](https://github.com/duke-git/lancet/blob/main/datetime/datetime.go)
- [https://github.com/duke-git/lancet/blob/main/datetime/conversion.go](https://github.com/duke-git/lancet/blob/main/datetime/conversion.go)
<div STYLE="page-break-after: always;"></div>
## Usage:
```go
import (
"github.com/duke-git/lancet/v2/datetime"
@@ -20,66 +22,67 @@ import (
<div STYLE="page-break-after: always;"></div>
## Index
- [AddDay](#AddDay)
- [AddHour](#AddHour)
- [AddMinute](#AddMinute)
- [BeginOfMinute](#BeginOfMinute)
- [BeginOfHour](#BeginOfHour)
- [BeginOfDay](#BeginOfDay)
- [BeginOfWeek](#BeginOfWeek)
- [BeginOfMonth](#BeginOfMonth)
- [BeginOfYear](#BeginOfYear)
- [EndOfMinute](#EndOfMinute)
- [EndOfHour](#EndOfHour)
- [EndOfDay](#EndOfDay)
- [EndOfWeek](#EndOfWeek)
- [EndOfMonth](#EndOfMonth)
- [EndOfYear](#EndOfYear)
- [GetNowDate](#GetNowDate)
- [GetNowTime](#GetNowTime)
- [GetNowDateTime](#GetNowDateTime)
- [GetZeroHourTimestamp](#GetZeroHourTimestamp)
- [GetNightTimestamp](#GetNightTimestamp)
- [FormatTimeToStr](#FormatTimeToStr)
- [FormatStrToTime](#FormatStrToTime)
- [NewUnixNow](#NewUnixNow)
- [NewUnix](#NewUnix)
- [NewFormat](#NewFormat)
- [NewISO8601](#NewISO8601)
- [ToUnix](#ToUnix)
- [ToFormat](#ToFormat)
- [ToFormatForTpl](#ToFormatForTpl)
- [ToIso8601](#ToIso8601)
- [AddDay](#AddDay)
- [AddHour](#AddHour)
- [AddMinute](#AddMinute)
- [BeginOfMinute](#BeginOfMinute)
- [BeginOfHour](#BeginOfHour)
- [BeginOfDay](#BeginOfDay)
- [BeginOfWeek](#BeginOfWeek)
- [BeginOfMonth](#BeginOfMonth)
- [BeginOfYear](#BeginOfYear)
- [EndOfMinute](#EndOfMinute)
- [EndOfHour](#EndOfHour)
- [EndOfDay](#EndOfDay)
- [EndOfWeek](#EndOfWeek)
- [EndOfMonth](#EndOfMonth)
- [EndOfYear](#EndOfYear)
- [GetNowDate](#GetNowDate)
- [GetNowTime](#GetNowTime)
- [GetNowDateTime](#GetNowDateTime)
- [GetZeroHourTimestamp](#GetZeroHourTimestamp)
- [GetNightTimestamp](#GetNightTimestamp)
- [FormatTimeToStr](#FormatTimeToStr)
- [FormatStrToTime](#FormatStrToTime)
- [NewUnixNow](#NewUnixNow)
- [NewUnix](#NewUnix)
- [NewFormat](#NewFormat)
- [NewISO8601](#NewISO8601)
- [ToUnix](#ToUnix)
- [ToFormat](#ToFormat)
- [ToFormatForTpl](#ToFormatForTpl)
- [ToIso8601](#ToIso8601)
<div STYLE="page-break-after: always;"></div>
## Documentation
## Note:
1. 'format' string param in func FormatTimeToStr and FormatStrToTime function should be one of flows:
- yyyy-mm-dd hh:mm:ss
- yyyy-mm-dd hh:mm
- yyyy-mm-dd hh
- yyyy-mm-dd
- yyyy-mm
- mm-dd
- dd-mm-yy hh:mm:ss
- yyyy/mm/dd hh:mm:ss
- yyyy/mm/dd hh:mm
- yyyy-mm-dd hh
- yyyy/mm/dd
- yyyy/mm
- mm/dd
- dd/mm/yy hh:mm:ss
- yyyy
- mm
- hh:mm:ss
- mm:ss
1. 'format' string param in func FormatTimeToStr and FormatStrToTime function should be one of flows:
- yyyy-mm-dd hh:mm:ss
- yyyy-mm-dd hh:mm
- yyyy-mm-dd hh
- yyyy-mm-dd
- yyyy-mm
- mm-dd
- dd-mm-yy hh:mm:ss
- yyyy/mm/dd hh:mm:ss
- yyyy/mm/dd hh:mm
- yyyy-mm-dd hh
- yyyy/mm/dd
- yyyy/mm
- mm/dd
- dd/mm/yy hh:mm:ss
- yyyy
- mm
- hh:mm:ss
- mm:ss
### <span id="AddDay">AddDay</span>
<p>Add or sub days to time.</p>
<b>Signature:</b>
@@ -87,6 +90,7 @@ import (
```go
func AddDay(t time.Time, day int64) time.Time
```
<b>Example:</b>
```go
@@ -100,15 +104,24 @@ import (
func main() {
now := time.Now()
after2Days := datetime.AddDay(now, 2)
before2Days := datetime.AddDay(now, -2)
fmt.Println(after2Days, before2Days)
tomorrow := datetime.AddDay(now, 1)
diff1 := tomorrow.Sub(now)
yesterday := datetime.AddDay(now, -1)
diff2 := yesterday.Sub(now)
fmt.Println(diff1)
fmt.Println(diff2)
// Output:
// 24h0m0s
// -24h0m0s
}
```
### <span id="AddHour">AddHour</span>
<p>Add or sub hours to time.</p>
<b>Signature:</b>
@@ -116,6 +129,7 @@ func main() {
```go
func AddHour(t time.Time, hour int64) time.Time
```
<b>Example:</b>
```go
@@ -129,14 +143,24 @@ import (
func main() {
now := time.Now()
after2Hours := datetime.AddHour(now, 2)
before2Hours := datetime.AddHour(now, -2)
fmt.Println(after2Hours, after2Hours)
after2Hours := datetime.AddHour(now, 2)
diff1 := after2Hours.Sub(now)
before2Hours := datetime.AddHour(now, -2)
diff2 := before2Hours.Sub(now)
fmt.Println(diff1)
fmt.Println(diff2)
// Output:
// 2h0m0s
// -2h0m0s
}
```
### <span id="AddMinute">AddMinute</span>
<p>Add or sub minutes to time.</p>
<b>Signature:</b>
@@ -144,6 +168,7 @@ func main() {
```go
func AddMinute(t time.Time, minute int64) time.Time
```
<b>Example:</b>
```go
@@ -157,14 +182,24 @@ import (
func main() {
now := time.Now()
after2Minute := datetime.AddMinute(now, 2)
before2Minute := datetime.AddMinute(now, -2)
fmt.Println(after2Minute, before2Minute)
after2Minutes := datetime.AddMinute(now, 2)
diff1 := after2Minutes.Sub(now)
before2Minutes := datetime.AddMinute(now, -2)
diff2 := before2Minutes.Sub(now)
fmt.Println(diff1)
fmt.Println(diff2)
// Output:
// 2m0s
// -2m0s
}
```
### <span id="BeginOfMinute">BeginOfMinute</span>
<p>Return beginning minute time of day.</p>
<b>Signature:</b>
@@ -172,6 +207,7 @@ func main() {
```go
func BeginOfMinute(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -184,13 +220,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.BeginOfMinute(td)
fmt.Println(bm) //2022-02-15 15:48:00 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.BeginOfMinute(input)
fmt.Println(result)
// Output:
// 2023-01-08 18:50:00 +0000 UTC
}
```
### <span id="BeginOfHour">BeginOfHour</span>
<p>Return zero time of day.</p>
<b>Signature:</b>
@@ -198,6 +239,7 @@ func main() {
```go
func BeginOfHour(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -210,13 +252,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.BeginOfHour(td)
fmt.Println(bm) //2022-02-15 15:00:00 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.BeginOfHour(input)
fmt.Println(result)
// Output:
// 2023-01-08 18:00:00 +0000 UTC
}
```
### <span id="BeginOfDay">BeginOfDay</span>
<p>Return begin time of day.</p>
<b>Signature:</b>
@@ -224,6 +271,7 @@ func main() {
```go
func BeginOfDay(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -236,15 +284,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.BeginOfDay(td)
fmt.Println(bm) //2022-02-15 00:00:00 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.BeginOfDay(input)
fmt.Println(result)
// Output:
// 2023-01-08 00:00:00 +0000 UTC
}
```
### <span id="BeginOfWeek">BeginOfWeek</span>
<p>Return beginning time of week, week begin from Sunday.</p>
<b>Signature:</b>
@@ -252,6 +303,7 @@ func main() {
```go
func BeginOfWeek(t time.Time, beginFrom ...time.Weekday) time.Time
```
<b>Example:</b>
```go
@@ -264,15 +316,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.BeginOfWeek(td)
fmt.Println(bm) //2022-02-13 00:00:00 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.BeginOfWeek(input)
fmt.Println(result)
// Output:
// 2023-01-08 00:00:00 +0000 UTC
}
```
### <span id="BeginOfMonth">BeginOfMonth</span>
<p>Return beginning time of month</p>
<b>Signature:</b>
@@ -280,6 +335,7 @@ func main() {
```go
func BeginOfMonth(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -292,14 +348,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.BeginOfMonth(td)
fmt.Println(bm) //2022-02-01 00:00:00 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.BeginOfMonth(input)
fmt.Println(result)
// Output:
// 2023-01-01 00:00:00 +0000 UTC
}
```
### <span id="BeginOfYear">BeginOfYear</span>
<p>Return beginning time of year.</p>
<b>Signature:</b>
@@ -307,6 +367,7 @@ func main() {
```go
func BeginOfYear(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -319,15 +380,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.BeginOfYear(td)
fmt.Println(bm) //2022-01-01 00:00:00 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.BeginOfYear(input)
fmt.Println(result)
// Output:
// 2023-01-01 00:00:00 +0000 UTC
}
```
### <span id="EndOfMinute">EndOfMinute</span>
<p>Return end time minute of day.</p>
<b>Signature:</b>
@@ -335,6 +399,7 @@ func main() {
```go
func EndOfMinute(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -347,13 +412,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.EndOfMinute(td)
fmt.Println(bm) //2022-02-15 15:48:59.999999999 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.EndOfMinute(input)
fmt.Println(result)
// Output:
// 2023-01-08 18:50:59.999999999 +0000 UTC
}
```
### <span id="EndOfHour">EndOfHour</span>
<p>Return end time hour of day.</p>
<b>Signature:</b>
@@ -361,6 +431,7 @@ func main() {
```go
func EndOfHour(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -373,13 +444,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.EndOfHour(td)
fmt.Println(bm) //2022-02-15 15:59:59.999999999 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.EndOfHour(input)
fmt.Println(result)
// Output:
// 2023-01-08 18:59:59.999999999 +0000 UTC
}
```
### <span id="EndOfDay">EndOfDay</span>
<p>Return end time hour of day.</p>
<b>Signature:</b>
@@ -387,6 +463,7 @@ func main() {
```go
func EndOfDay(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -399,15 +476,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.EndOfDay(td)
fmt.Println(bm) //2022-02-15 23:59:59.999999999 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.EndOfDay(input)
fmt.Println(result)
// Output:
// 2023-01-08 23:59:59.999999999 +0000 UTC
}
```
### <span id="EndOfWeek">EndOfWeek</span>
<p>Return end time of week, week end with Saturday.</p>
<b>Signature:</b>
@@ -415,6 +495,7 @@ func main() {
```go
func EndOfWeek(t time.Time, endWith ...time.Weekday) time.Time
```
<b>Example:</b>
```go
@@ -427,15 +508,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.EndOfWeek(td)
fmt.Println(bm) //2022-02-19 23:59:59.999999999 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.EndOfWeek(input)
fmt.Println(result)
// Output:
// 2023-01-14 23:59:59.999999999 +0000 UTC
}
```
### <span id="EndOfMonth">EndOfMonth</span>
<p>Return end time of month</p>
<b>Signature:</b>
@@ -443,6 +527,7 @@ func main() {
```go
func EndOfMonth(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -455,14 +540,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.EndOfMonth(td)
fmt.Println(bm) //2022-02-28 23:59:59.999999999 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.EndOfMonth(input)
fmt.Println(result)
// Output:
// 2023-01-31 23:59:59.999999999 +0000 UTC
}
```
### <span id="EndOfYear">EndOfYear</span>
<p>Return beginning time of year.</p>
<b>Signature:</b>
@@ -470,6 +559,7 @@ func main() {
```go
func EndOfYear(t time.Time) time.Time
```
<b>Example:</b>
```go
@@ -482,14 +572,18 @@ import (
)
func main() {
td := time.Date(2022, 2, 15, 15, 48, 40, 112, time.Local)
bm := datetime.EndOfYear(td)
fmt.Println(bm) //2022-12-31 23:59:59.999999999 +0800 CST
input := time.Date(2023, 1, 8, 18, 50, 10, 100, time.UTC)
result := datetime.EndOfYear(input)
fmt.Println(result)
// Output:
// 2023-12-31 23:59:59.999999999 +0000 UTC
}
```
### <span id="GetNowDate">GetNowDate</span>
<p>Get current date string, format is yyyy-mm-dd.</p>
<b>Signature:</b>
@@ -497,6 +591,7 @@ func main() {
```go
func GetNowDate() string
```
<b>Example:</b>
```go
@@ -511,12 +606,16 @@ import (
func main() {
now := time.Now()
currentDate := datetime.GetNowDate()
fmt.Println(currentDate) // 2022-01-28
fmt.Println(currentDate)
// Output:
// 2022-01-28
}
```
### <span id="GetNowTime">GetNowTime</span>
<p>Get current time string, format is hh:mm:ss.</p>
<b>Signature:</b>
@@ -524,6 +623,7 @@ func main() {
```go
func GetNowTime() string
```
<b>Example:</b>
```go
@@ -538,12 +638,16 @@ import (
func main() {
now := time.Now()
currentTime := datetime.GetNowTime()
fmt.Println(currentDate) // 15:57:33
fmt.Println(currentTime) // 15:57:33
// Output:
// 15:57:33
}
```
### <span id="GetNowDateTime">GetNowDateTime</span>
<p>Get current date time string, format is yyyy-mm-dd hh:mm:ss.</p>
<b>Signature:</b>
@@ -551,6 +655,7 @@ func main() {
```go
func GetNowDateTime() string
```
<b>Example:</b>
```go
@@ -565,12 +670,16 @@ import (
func main() {
now := time.Now()
current := datetime.GetNowDateTime()
fmt.Println(current) // 2022-01-28 15:59:33
fmt.Println(current)
// Output:
// 2022-01-28 15:59:33
}
```
### <span id="GetZeroHourTimestamp">GetZeroHourTimestamp</span>
<p>Return timestamp of zero hour (timestamp of 00:00).</p>
<b>Signature:</b>
@@ -578,6 +687,7 @@ func main() {
```go
func GetZeroHourTimestamp() int64
```
<b>Example:</b>
```go
@@ -592,12 +702,16 @@ import (
func main() {
now := time.Now()
zeroTime := datetime.GetZeroHourTimestamp()
fmt.Println(zeroTime) // 1643299200
fmt.Println(zeroTime)
// Output:
// 1643299200
}
```
### <span id="GetNightTimestamp">GetNightTimestamp</span>
<p>Return timestamp of zero hour (timestamp of 23:59).</p>
<b>Signature:</b>
@@ -605,6 +719,7 @@ func main() {
```go
func GetNightTimestamp() int64
```
<b>Example:</b>
```go
@@ -619,11 +734,16 @@ import (
func main() {
now := time.Now()
nightTime := datetime.GetNightTimestamp()
fmt.Println(nightTime) // 1643385599
fmt.Println(nightTime)
// Output:
// 1643385599
}
```
### <span id="FormatTimeToStr">FormatTimeToStr</span>
<p>Format time to string, `format` param specification see note 1.</p>
<b>Signature:</b>
@@ -631,6 +751,7 @@ func main() {
```go
func FormatTimeToStr(t time.Time, format string) string
```
<b>Example:</b>
```go
@@ -643,14 +764,25 @@ import (
)
func main() {
now := time.Now()
timeStr := datetime.FormatTimeToStr(now, "yyyy/mm/dd hh:mm:ss")
fmt.Println(timeStr) //2022/01/28 16:07:44
t, _ := time.Parse("2006-01-02 15:04:05", "2021-01-02 16:04:08")
result1 := datetime.FormatTimeToStr(t, "yyyy-mm-dd hh:mm:ss")
result2 := datetime.FormatTimeToStr(t, "yyyy-mm-dd")
result3 := datetime.FormatTimeToStr(t, "dd-mm-yy hh:mm:ss")
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 2021-01-02 16:04:08
// 2021-01-02
// 02-01-21 16:04:08
}
```
### <span id="FormatStrToTime">FormatStrToTime</span>
<p>Format string to time, `format` param specification see note 1.</p>
<b>Signature:</b>
@@ -658,6 +790,7 @@ func main() {
```go
func FormatStrToTime(str, format string) (time.Time, error)
```
<b>Example:</b>
```go
@@ -669,24 +802,34 @@ import (
)
func main() {
time := datetime.FormatStrToTime("2006-01-02 15:04:05", "yyyy/mm/dd hh:mm:ss")
fmt.Println(time)
result1, _ := datetime.FormatStrToTime("2021-01-02 16:04:08", "yyyy-mm-dd hh:mm:ss")
result2, _ := datetime.FormatStrToTime("2021-01-02", "yyyy-mm-dd")
result3, _ := datetime.FormatStrToTime("02-01-21 16:04:08", "dd-mm-yy hh:mm:ss")
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 2021-01-02 16:04:08 +0000 UTC
// 2021-01-02 00:00:00 +0000 UTC
// 2021-01-02 16:04:08 +0000 UTC
}
```
### <span id="NewUnixNow">NewUnixNow</span>
<p>Return unix timestamp of current time</p>
<b>Signature:</b>
```go
type theTime struct {
unix int64
unix int64
}
func NewUnixNow() *theTime
```
<b>Example:</b>
```go
@@ -699,12 +842,15 @@ import (
func main() {
tm := datetime.NewUnixNow()
fmt.Println(tm) //&{1647597438}
fmt.Println(tm)
// Output:
// &{1647597438}
}
```
### <span id="NewUnix">NewUnix</span>
<p>Return unix timestamp of specified int64 value.</p>
<b>Signature:</b>
@@ -715,6 +861,7 @@ type theTime struct {
}
func NewUnix(unix int64) *theTime
```
<b>Example:</b>
```go
@@ -727,13 +874,15 @@ import (
func main() {
tm := datetime.NewUnix(1647597438)
fmt.Println(tm) //&{1647597438}
fmt.Println(tm)
// Output:
// &{1647597438}
}
```
### <span id="NewFormat">NewFormat</span>
<p>Return unix timestamp of specified time string, t should be "yyyy-mm-dd hh:mm:ss".</p>
<b>Signature:</b>
@@ -744,6 +893,7 @@ type theTime struct {
}
func NewFormat(t string) (*theTime, error)
```
<b>Example:</b>
```go
@@ -756,14 +906,15 @@ import (
func main() {
tm, err := datetime.NewFormat("2022-03-18 17:04:05")
fmt.Println(tm) //&{1647594245}
fmt.Println(tm)
// Output:
// &{1647594245}
}
```
### <span id="NewISO8601">NewISO8601</span>
<p>Return unix timestamp of specified iso8601 time string.</p>
<b>Signature:</b>
@@ -774,6 +925,7 @@ type theTime struct {
}
func NewISO8601(iso8601 string) (*theTime, error)
```
<b>Example:</b>
```go
@@ -786,13 +938,15 @@ import (
func main() {
tm, err := datetime.NewISO8601("2006-01-02T15:04:05.999Z")
fmt.Println(tm) //&{1136214245}
fmt.Println(tm)
// Output:
// &{1136214245}
}
```
### <span id="ToUnix">ToUnix</span>
<p>Return unix timestamp.</p>
<b>Signature:</b>
@@ -800,6 +954,7 @@ func main() {
```go
func (t *theTime) ToUnix() int64
```
<b>Example:</b>
```go
@@ -812,13 +967,15 @@ import (
func main() {
tm := datetime.NewUnixNow()
fmt.Println(tm.ToUnix()) //1647597438
fmt.Println(tm.ToUnix())
// Output:
// 1647597438
}
```
### <span id="ToFormat">ToFormat</span>
<p>Return time string 'yyyy-mm-dd hh:mm:ss'.</p>
<b>Signature:</b>
@@ -826,6 +983,7 @@ func main() {
```go
func (t *theTime) ToFormat() string
```
<b>Example:</b>
```go
@@ -838,13 +996,15 @@ import (
func main() {
tm, _ := datetime.NewFormat("2022-03-18 17:04:05")
fmt.Println(tm.ToFormat()) //"2022-03-18 17:04:05"
fmt.Println(tm.ToFormat())
// Output:
// 2022-03-18 17:04:05
}
```
### <span id="ToFormatForTpl">ToFormatForTpl</span>
<p>Return the time string which format is specified tpl.</p>
<b>Signature:</b>
@@ -852,6 +1012,7 @@ func main() {
```go
func (t *theTime) ToFormatForTpl(tpl string) string
```
<b>Example:</b>
```go
@@ -865,12 +1026,15 @@ import (
func main() {
tm, _ := datetime.NewFormat("2022-03-18 17:04:05")
ts := tm.ToFormatForTpl("2006/01/02 15:04:05")
fmt.Println(ts) //"2022/03/18 17:04:05"
fmt.Println(ts)
// Output:
// 2022/03/18 17:04:05
}
```
### <span id="ToIso8601">ToIso8601</span>
<p>Return iso8601 time string.</p>
<b>Signature:</b>
@@ -878,6 +1042,7 @@ func main() {
```go
func (t *theTime) ToIso8601() string
```
<b>Example:</b>
```go
@@ -891,6 +1056,9 @@ import (
func main() {
tm, _ := datetime.NewISO8601("2006-01-02T15:04:05.999Z")
ts := tm.ToIso8601()
fmt.Println(ts) //"2006-01-02T23:04:05+08:00"
fmt.Println(ts)
// Output:
// 2006-01-02T23:04:05+08:00
}
```
```

File diff suppressed because it is too large Load Diff

View File

@@ -1,15 +1,17 @@
# Fileutil
Package fileutil implements some basic functions for file operations.
<div STYLE="page-break-after: always;"></div>
## Source:
- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
<div STYLE="page-break-after: always;"></div>
## Usage:
```go
import (
"github.com/duke-git/lancet/v2/fileutil"
@@ -19,30 +21,30 @@ import (
<div STYLE="page-break-after: always;"></div>
## Index
- [ClearFile](#ClearFile)
- [CreateFile](#CreateFile)
- [CreateDir](#CreateDir)
- [CopyFile](#CopyFile)
- [FileMode](#FileMode)
- [MiMeType](#MiMeType)
- [IsExist](#IsExist)
- [IsLink](#IsLink)
- [IsDir](#IsDir)
- [ListFileNames](#ListFileNames)
- [RemoveFile](#RemoveFile)
- [ReadFileToString](#ReadFileToString)
- [ReadFileByLine](#ReadFileByLine)
- [Zip](#Zip)
- [UnZip](#UnZip)
- [UnZip](#UnZip)
- [ClearFile](#ClearFile)
- [CreateFile](#CreateFile)
- [CreateDir](#CreateDir)
- [CopyFile](#CopyFile)
- [FileMode](#FileMode)
- [MiMeType](#MiMeType)
- [IsExist](#IsExist)
- [IsLink](#IsLink)
- [IsDir](#IsDir)
- [ListFileNames](#ListFileNames)
- [RemoveFile](#RemoveFile)
- [ReadFileToString](#ReadFileToString)
- [ReadFileByLine](#ReadFileByLine)
- [Zip](#Zip)
- [UnZip](#UnZip)
- [UnZip](#UnZip)
<div STYLE="page-break-after: always;"></div>
## Documentation
### <span id="ClearFile">ClearFile</span>
<p>Clear the file content, write empty string to the file.</p>
<b>Signature:</b>
@@ -50,6 +52,7 @@ import (
```go
func ClearFile(path string) error
```
<b>Example:</b>
```go
@@ -69,6 +72,7 @@ func main() {
```
### <span id="CreateFile">CreateFile</span>
<p>Create file in path. return true if create succeed.</p>
<b>Signature:</b>
@@ -76,6 +80,7 @@ func main() {
```go
func CreateFile(path string) bool
```
<b>Example:</b>
```go
@@ -92,9 +97,8 @@ func main() {
}
```
### <span id="CreateDir">CreateDir</span>
<p>Create directory in absolute path. param `absPath` like /a/, /a/b/.</p>
<b>Signature:</b>
@@ -102,6 +106,7 @@ func main() {
```go
func CreateDir(absPath string) error
```
<b>Example:</b>
```go
@@ -118,8 +123,8 @@ func main() {
}
```
### <span id="CopyFile">CopyFile</span>
<p>Copy src file to dest file. If dest file exist will overwrite it.</p>
<b>Signature:</b>
@@ -127,6 +132,7 @@ func main() {
```go
func CopyFile(srcFilePath string, dstFilePath string) error
```
<b>Example:</b>
```go
@@ -145,9 +151,8 @@ func main() {
}
```
### <span id="FileMode">FileMode</span>
<p>Return file mode infomation.</p>
<b>Signature:</b>
@@ -155,6 +160,7 @@ func main() {
```go
func FileMode(path string) (fs.FileMode, error)
```
<b>Example:</b>
```go
@@ -174,9 +180,8 @@ func main() {
}
```
### <span id="MiMeType">MiMeType</span>
<p>Get file mime type, 'file' param's type should be string or *os.File.</p>
<b>Signature:</b>
@@ -184,6 +189,7 @@ func main() {
```go
func MiMeType(file any) string
```
<b>Example:</b>
```go
@@ -205,10 +211,8 @@ func main() {
}
```
### <span id="IsExist">IsExist</span>
<p>Checks if a file or directory exists.</p>
<b>Signature:</b>
@@ -216,6 +220,7 @@ func main() {
```go
func IsExist(path string) bool
```
<b>Example:</b>
```go
@@ -233,9 +238,8 @@ func main() {
}
```
### <span id="IsLink">IsLink</span>
<p>Checks if a file is symbol link or not.</p>
<b>Signature:</b>
@@ -243,6 +247,7 @@ func main() {
```go
func IsLink(path string) bool
```
<b>Example:</b>
```go
@@ -259,16 +264,16 @@ func main() {
}
```
### <span id="IsDir">IsDir</span>
<p>Checks if the path is directy or not.</p>
<b>Signature:</b>
```go
func IsDir(path string) bool
func IsDir(path string) bool
```
<b>Example:</b>
```go
@@ -288,9 +293,8 @@ func main() {
}
```
### <span id="ListFileNames">ListFileNames</span>
<p>List all file names in given path.</p>
<b>Signature:</b>
@@ -298,6 +302,7 @@ func main() {
```go
func ListFileNames(path string) ([]string, error)
```
<b>Example:</b>
```go
@@ -314,9 +319,8 @@ func main() {
}
```
### <span id="RemoveFile">RemoveFile</span>
<p>Remove the file of path.</p>
<b>Signature:</b>
@@ -324,6 +328,7 @@ func main() {
```go
func RemoveFile(path string) error
```
<b>Example:</b>
```go
@@ -342,8 +347,8 @@ func main() {
}
```
### <span id="ReadFileToString">ReadFileToString</span>
<p>Return string of file content.</p>
<b>Signature:</b>
@@ -351,6 +356,7 @@ func main() {
```go
func ReadFileToString(path string) (string, error)
```
<b>Example:</b>
```go
@@ -374,9 +380,8 @@ func main() {
}
```
### <span id="ReadFileByLine">ReadFileByLine</span>
<p>Read file line by line, and return slice of lines</p>
<b>Signature:</b>
@@ -384,6 +389,7 @@ func main() {
```go
func ReadFileByLine(path string)([]string, error)
```
<b>Example:</b>
```go
@@ -408,9 +414,8 @@ func main() {
}
```
### <span id="Zip">Zip</span>
<p>Create a zip file of fpath, fpath could be a file or a directory.</p>
<b>Signature:</b>
@@ -418,6 +423,7 @@ func main() {
```go
func Zip(fpath string, destPath string) error
```
<b>Example:</b>
```go
@@ -436,10 +442,8 @@ func main() {
}
```
### <span id="UnZip">UnZip</span>
<p>Unzip the file and save it to dest path.</p>
<b>Signature:</b>
@@ -447,6 +451,7 @@ func main() {
```go
func UnZip(zipFile string, destPath string) error
```
<b>Example:</b>
```go
@@ -464,8 +469,3 @@ func main() {
}
}
```

View File

@@ -1,15 +1,17 @@
# Fileutil
fileutil包支持文件基本操作。
fileutil 包支持文件基本操作。
<div STYLE="page-break-after: always;"></div>
## 源码:
- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
<div STYLE="page-break-after: always;"></div>
## 用法:
```go
import (
"github.com/duke-git/lancet/v2/fileutil"
@@ -19,29 +21,29 @@ import (
<div STYLE="page-break-after: always;"></div>
## 目录
- [ClearFile](#ClearFile)
- [CreateFile](#CreateFile)
- [CreateDir](#CreateDir)
- [CopyFile](#CopyFile)
- [FileMode](#FileMode)
- [MiMeType](#MiMeType)
- [IsExist](#IsExist)
- [IsLink](#IsLink)
- [IsDir](#IsDir)
- [ListFileNames](#ListFileNames)
- [RemoveFile](#RemoveFile)
- [ReadFileToString](#ReadFileToString)
- [ReadFileByLine](#ReadFileByLine)
- [Zip](#Zip)
- [UnZip](#UnZip)
- [ClearFile](#ClearFile)
- [CreateFile](#CreateFile)
- [CreateDir](#CreateDir)
- [CopyFile](#CopyFile)
- [FileMode](#FileMode)
- [MiMeType](#MiMeType)
- [IsExist](#IsExist)
- [IsLink](#IsLink)
- [IsDir](#IsDir)
- [ListFileNames](#ListFileNames)
- [RemoveFile](#RemoveFile)
- [ReadFileToString](#ReadFileToString)
- [ReadFileByLine](#ReadFileByLine)
- [Zip](#Zip)
- [UnZip](#UnZip)
<div STYLE="page-break-after: always;"></div>
## 文档
### <span id="ClearFile">ClearFile</span>
<p>清空文件内容</p>
<b>函数签名:</b>
@@ -49,6 +51,7 @@ import (
```go
func ClearFile(path string) error
```
<b>例子:</b>
```go
@@ -68,6 +71,7 @@ func main() {
```
### <span id="CreateFile">CreateFile</span>
<p>创建文件创建成功返回true, 否则返回false</p>
<b>函数签名:</b>
@@ -75,6 +79,7 @@ func main() {
```go
func CreateFile(path string) bool
```
<b>例子:</b>
```go
@@ -91,8 +96,8 @@ func main() {
}
```
### <span id="CreateDir">CreateDir</span>
<p>使用绝对路径创建嵌套目录,例如/a/, /a/b/</p>
<b>函数签名:</b>
@@ -100,6 +105,7 @@ func main() {
```go
func CreateDir(absPath string) error
```
<b>Example:</b>
```go
@@ -116,9 +122,8 @@ func main() {
}
```
### <span id="CopyFile">CopyFile</span>
<p>拷贝文件,会覆盖原有的文件</p>
<b>函数签名:</b>
@@ -126,6 +131,7 @@ func main() {
```go
func CopyFile(srcFilePath string, dstFilePath string) error
```
<b>例子:</b>
```go
@@ -144,9 +150,8 @@ func main() {
}
```
### <span id="FileMode">FileMode</span>
<p>获取文件mode信息</p>
<b>函数签名:</b>
@@ -154,6 +159,7 @@ func main() {
```go
func FileMode(path string) (fs.FileMode, error)
```
<b>例子:</b>
```go
@@ -173,9 +179,8 @@ func main() {
}
```
### <span id="MiMeType">MiMeType</span>
<p>获取文件mime类型, 'file'参数的类型必须是string或者*os.File</p>
<b>函数签名:</b>
@@ -183,6 +188,7 @@ func main() {
```go
func MiMeType(file any) string
```
<b>例子:</b>
```go
@@ -204,10 +210,8 @@ func main() {
}
```
### <span id="IsExist">IsExist</span>
<p>判断文件或目录是否存在</p>
<b>函数签名:</b>
@@ -215,6 +219,7 @@ func main() {
```go
func IsExist(path string) bool
```
<b>例子:</b>
```go
@@ -232,9 +237,8 @@ func main() {
}
```
### <span id="IsLink">IsLink</span>
<p>判断文件是否是符号链接</p>
<b>函数签名:</b>
@@ -242,6 +246,7 @@ func main() {
```go
func IsLink(path string) bool
```
<b>例子:</b>
```go
@@ -258,16 +263,16 @@ func main() {
}
```
### <span id="IsDir">IsDir</span>
<p>判断参数是否是目录</p>
<b>函数签名:</b>
```go
func IsDir(path string) bool
func IsDir(path string) bool
```
<b>例子:</b>
```go
@@ -287,9 +292,8 @@ func main() {
}
```
### <span id="ListFileNames">ListFileNames</span>
<p>返回目录下所有文件名</p>
<b>函数签名:</b>
@@ -297,6 +301,7 @@ func main() {
```go
func ListFileNames(path string) ([]string, error)
```
<b>例子:</b>
```go
@@ -313,9 +318,8 @@ func main() {
}
```
### <span id="RemoveFile">RemoveFile</span>
<p>删除文件</p>
<b>函数签名:</b>
@@ -323,6 +327,7 @@ func main() {
```go
func RemoveFile(path string) error
```
<b>例子:</b>
```go
@@ -341,8 +346,8 @@ func main() {
}
```
### <span id="ReadFileToString">ReadFileToString</span>
<p>读取文件内容并返回字符串</p>
<b>函数签名:</b>
@@ -350,6 +355,7 @@ func main() {
```go
func ReadFileToString(path string) (string, error)
```
<b>例子:</b>
```go
@@ -373,9 +379,8 @@ func main() {
}
```
### <span id="ReadFileByLine">ReadFileByLine</span>
<p>按行读取文件内容,返回字符串切片包含每一行</p>
<b>函数签名:</b>
@@ -383,6 +388,7 @@ func main() {
```go
func ReadFileByLine(path string)([]string, error)
```
<b>例子:</b>
```go
@@ -407,9 +413,8 @@ func main() {
}
```
### <span id="Zip">Zip</span>
<p>zip压缩文件, fpath参数可以是文件或目录</p>
<b>函数签名:</b>
@@ -417,6 +422,7 @@ func main() {
```go
func Zip(fpath string, destPath string) error
```
<b>例子:</b>
```go
@@ -435,10 +441,8 @@ func main() {
}
```
### <span id="UnZip">UnZip</span>
<p>zip解压缩文件并保存在目录中</p>
<b>Signature:</b>
@@ -446,6 +450,7 @@ func main() {
```go
func UnZip(zipFile string, destPath string) error
```
<b>例子:</b>
```go
@@ -463,8 +468,3 @@ func main() {
}
}
```

View File

@@ -1,15 +1,17 @@
# Formatter
formatter contains some functions for data formatting.
<div STYLE="page-break-after: always;"></div>
## Source:
- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
<div STYLE="page-break-after: always;"></div>
## Usage:
```go
import (
"github.com/duke-git/lancet/v2/formatter"
@@ -19,15 +21,15 @@ import (
<div STYLE="page-break-after: always;"></div>
## Index
- [Comma](#Comma)
- [Comma](#Comma)
<div STYLE="page-break-after: always;"></div>
## Documentation
### <span id="Comma">Comma</span>
<p>Add comma to a number value by every 3 numbers from right to left. ahead by symbol char. if value is a invalid number string like "aa", return empty string.</p>
<b>Signature:</b>
@@ -35,6 +37,7 @@ import (
```go
func Comma[T constraints.Float | constraints.Integer | string](value T, symbol string) string
```
<b>Example:</b>
```go
@@ -46,7 +49,17 @@ import (
)
func main() {
fmt.Println(formatter.Comma("12345", "")) // "12,345"
fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
result1 := formatter.Comma("123", "")
result2 := formatter.Comma("12345", "$")
result3 := formatter.Comma(1234567, "¥")
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 123
// $12,345
// ¥1,234,567
}
```

View File

@@ -1,15 +1,17 @@
# Formatter
formatter格式化器包含一些数据格式化处理方法。
formatter 格式化器包含一些数据格式化处理方法。
<div STYLE="page-break-after: always;"></div>
## 源码:
- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
- [https://github.com/duke-git/lancet/blob/main/formatter/formatter.go](https://github.com/duke-git/lancet/blob/main/formatter/formatter.go)
<div STYLE="page-break-after: always;"></div>
## 用法:
```go
import (
"github.com/duke-git/lancet/v2/formatter"
@@ -19,15 +21,15 @@ import (
<div STYLE="page-break-after: always;"></div>
## 目录
- [Comma](#Comma)
- [Comma](#Comma)
<div STYLE="page-break-after: always;"></div>
## 文档
### <span id="Comma">Comma</span>
<p>用逗号每隔3位分割数字/字符串支持前缀添加符号。参数value必须是数字或者可以转为数字的字符串, 否则返回空字符串</p>
<b>函数签名:</b>
@@ -35,6 +37,7 @@ import (
```go
func Comma[T constraints.Float | constraints.Integer | string](value T, symbol string) string
```
<b>例子:</b>
```go
@@ -46,7 +49,17 @@ import (
)
func main() {
fmt.Println(formatter.Comma("12345", "")) // "12,345"
fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
result1 := formatter.Comma("123", "")
result2 := formatter.Comma("12345", "$")
result3 := formatter.Comma(1234567, "¥")
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 123
// $12,345
// ¥1,234,567
}
```

View File

@@ -1,16 +1,18 @@
# Function
Package function can control the flow of function execution and support part of functional programming.
<div STYLE="page-break-after: always;"></div>
## Source:
- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
<div STYLE="page-break-after: always;"></div>
## Usage:
```go
import (
"github.com/duke-git/lancet/v2/function"
@@ -20,22 +22,22 @@ import (
<div STYLE="page-break-after: always;"></div>
## Index
- [After](#After)
- [Before](#Before)
- [CurryFn](#CurryFn)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [Pipeline](#Pipeline)
- [Watcher](#Watcher)
- [After](#After)
- [Before](#Before)
- [CurryFn](#CurryFn)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [Pipeline](#Pipeline)
- [Watcher](#Watcher)
<div STYLE="page-break-after: always;"></div>
## Documentation
### <span id="After">After</span>
<p>Creates a function that invokes given func once it's called n or more times.</p>
<b>Signature:</b>
@@ -43,6 +45,7 @@ import (
```go
func After(n int, fn any) func(args ...any) []reflect.Value
```
<b>Example:</b>
```go
@@ -54,33 +57,18 @@ import (
)
func main() {
arr := []string{"a", "b"}
f := function.After(len(arr), func(i int) int {
fmt.Println("last print")
return i
})
fn := function.After(2, func() {
fmt.Println("hello")
})
type cb func(args ...any) []reflect.Value
print := func(i int, s string, fn cb) {
fmt.Printf("arr[%d] is %s \n", i, s)
fn(i)
}
fn()
fn()
fmt.Println("arr is", arr)
for i := 0; i < len(arr); i++ {
print(i, arr[i], f)
}
//output:
// arr is [a b]
// arr[0] is a
// arr[1] is b
// last print
// Output:
// hello
}
```
### <span id="Before">Before</span>
<p>creates a function that invokes func once it's called less than n times.</p>
@@ -90,6 +78,7 @@ func main() {
```go
func Before(n int, fn any) func(args ...any) []reflect.Value
```
<b>Example:</b>
```go
@@ -102,29 +91,21 @@ import (
)
func main() {
arr := []string{"a", "b", "c", "d", "e"}
f := function.Before(3, func(i int) int {
return i
})
fn := function.Before(2, func() {
fmt.Println("hello")
})
var res []int64
type cb func(args ...any) []reflect.Value
appendStr := func(i int, s string, fn cb) {
v := fn(i)
res = append(res, v[0].Int())
}
fn()
fn()
fn()
fn()
for i := 0; i < len(arr); i++ {
appendStr(i, arr[i], f)
}
expected := []int64{0, 1, 2, 2, 2}
fmt.Println(res) // 0, 1, 2, 2, 2
// Output:
// hello
// hello
}
```
### <span id="CurryFn">CurryFn</span>
<p>Make curry function.</p>
@@ -135,6 +116,7 @@ func main() {
type CurryFn[T any] func(...T) T
func (cf CurryFn[T]) New(val T) func(...T) T
```
<b>Example:</b>
```go
@@ -147,22 +129,23 @@ import (
func main() {
add := func(a, b int) int {
return a + b
}
return a + b
}
var addCurry CurryFn[int] = func(values ...int) int {
return add(values[0], values[1])
}
add1 := addCurry.New(1)
var addCurry function.CurryFn[int] = func(values ...int) int {
return add(values[0], values[1])
}
add1 := addCurry.New(1)
result := add1(2)
result := add1(2)
fmt.Println(result) //3
fmt.Println(result)
// Output:
// 3
}
```
### <span id="Compose">Compose</span>
<p>Compose the function list from right to left, then return the composed function.</p>
@@ -172,6 +155,7 @@ func main() {
```go
func Compose[T any](fnList ...func(...T) T) func(...T) T
```
<b>Example:</b>
```go
@@ -183,22 +167,23 @@ import (
)
func main() {
toUpper := func(strs ...string) string {
return strings.ToUpper(strs[0])
}
toLower := func(strs ...string) string {
return strings.ToLower(strs[0])
}
transform := Compose(toUpper, toLower)
toUpper := func(strs ...string) string {
return strings.ToUpper(strs[0])
}
toLower := func(strs ...string) string {
return strings.ToLower(strs[0])
}
transform := function.Compose(toUpper, toLower)
result := transform("aBCde")
result := transform("aBCde")
fmt.Println(result) //ABCDE
fmt.Println(result)
// Output:
// ABCDE
}
```
### <span id="Debounced">Debounced</span>
<p>Creates a debounced function that delays invoking fn until after wait duration have elapsed since the last time the debounced function was invoked.</p>
@@ -208,6 +193,7 @@ func main() {
```go
func Debounced(fn func(), duration time.Duration) func()
```
<b>Example:</b>
```go
@@ -220,27 +206,34 @@ import (
func main() {
count := 0
add := func() {
count++
}
debouncedAdd := function.Debounced(add, 50*time.Microsecond)
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
add := func() {
count++
}
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //1
debouncedAdd := function.Debounced(add, 50*time.Microsecond)
function.debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //2
debouncedAdd()
debouncedAdd()
debouncedAdd()
debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count)
debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count)
// Output:
// 1
// 2
}
```
### <span id="Delay">Delay</span>
<p>Invoke function after delayed time.</p>
@@ -250,6 +243,7 @@ func main() {
```go
func Delay(delay time.Duration, fn any, args ...any)
```
<b>Example:</b>
```go
@@ -261,15 +255,17 @@ import (
)
func main() {
var print = func(s string) {
fmt.Println(count) //delay 2 seconds
}
function.Delay(2*time.Second, print, "delay 2 seconds")
var print = func(s string) {
fmt.Println(s)
}
function.Delay(2*time.Second, print, "hello")
// Output:
// hello
}
```
### <span id="Schedule">Schedule</span>
<p>Invoke function every duration time, until close the returned bool chan.</p>
@@ -279,6 +275,7 @@ func main() {
```go
func Schedule(d time.Duration, fn any, args ...any) chan bool
```
<b>Example:</b>
```go
@@ -290,20 +287,24 @@ import (
)
func main() {
var res []string
appendStr := func(s string) {
res = append(res, s)
}
count := 0
stop := function.Schedule(1*time.Second, appendStr, "*")
time.Sleep(5 * time.Second)
close(stop)
increase := func() {
count++
}
fmt.Println(res) //[* * * * *]
stop := function.Schedule(2*time.Second, increase)
time.Sleep(2 * time.Second)
close(stop)
fmt.Println(count)
// Output:
// 2
}
```
### <span id="Pipeline">Pipeline</span>
<p>Pipeline takes a list of functions and returns a function whose param will be passed into
@@ -314,6 +315,7 @@ the functions one by one.</p>
```go
func Pipeline[T any](funcs ...func(T) T) func(T) T
```
<b>Example:</b>
```go
@@ -326,22 +328,26 @@ import (
func main() {
addOne := func(x int) int {
return x + 1
}
double := func(x int) int {
return 2 * x
}
square := func(x int) int {
return x * x
}
return x + 1
}
double := func(x int) int {
return 2 * x
}
square := func(x int) int {
return x * x
}
fn := Pipeline(addOne, double, square)
fn := function.Pipeline(addOne, double, square)
fmt.Println(fn(2)) //36
result := fn(2)
fmt.Println(result)
// Output:
// 36
}
```
### <span id="Watcher">Watcher</span>
<p>Watcher is used for record code excution time. can start/stop/reset the watch timer. get the elapsed time of function execution.</p>
@@ -350,9 +356,9 @@ func main() {
```go
type Watcher struct {
startTime int64
stopTime int64
excuting bool
startTime int64
stopTime int64
excuting bool
}
func NewWatcher() *Watcher
func (w *Watcher) Start() //start the watcher
@@ -360,6 +366,7 @@ func (w *Watcher) Stop() //stop the watcher
func (w *Watcher) Reset() //reset the watcher
func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
```
<b>Example:</b>
```go
@@ -371,31 +378,28 @@ import (
)
func main() {
w := function.NewWatcher()
w := function.NewWatcher()
w.Start()
w.Start()
longRunningTask()
longRunningTask()
fmt.Println(w.excuting) //true
fmt.Println(w.excuting) //true
w.Stop()
w.Stop()
eapsedTime := w.GetElapsedTime().Milliseconds()
fmt.Println(eapsedTime)
eapsedTime := w.GetElapsedTime().Milliseconds()
w.Reset()
fmt.Println(eapsedTime)
w.Reset()
}
func longRunningTask() {
var slice []int64
for i := 0; i < 10000000; i++ {
slice = append(slice, int64(i))
}
var slice []int64
for i := 0; i < 10000000; i++ {
slice = append(slice, int64(i))
}
}
```

View File

@@ -1,16 +1,18 @@
# Function
function函数包控制函数执行流程包含部分函数式编程。
function 函数包控制函数执行流程,包含部分函数式编程。
<div STYLE="page-break-after: always;"></div>
## 源码:
- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
- [https://github.com/duke-git/lancet/blob/main/function/function.go](https://github.com/duke-git/lancet/blob/main/function/function.go)
- [https://github.com/duke-git/lancet/blob/main/function/watcher.go](https://github.com/duke-git/lancet/blob/main/function/watcher.go)
<div STYLE="page-break-after: always;"></div>
## 用法:
```go
import (
"github.com/duke-git/lancet/v2/function"
@@ -20,22 +22,22 @@ import (
<div STYLE="page-break-after: always;"></div>
## 目录
- [After](#After)
- [Before](#Before)
- [CurryFn](#CurryFn)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [Pipeline](#Pipeline)
- [Watcher](#Watcher)
- [After](#After)
- [Before](#Before)
- [CurryFn](#CurryFn)
- [Compose](#Compose)
- [Debounced](#Debounced)
- [Delay](#Delay)
- [Pipeline](#Pipeline)
- [Watcher](#Watcher)
<div STYLE="page-break-after: always;"></div>
## 文档
### <span id="After">After</span>
<p>创建一个函数当他被调用n或更多次之后将马上触发fn</p>
<b>函数签名:</b>
@@ -43,6 +45,7 @@ import (
```go
func After(n int, fn any) func(args ...any) []reflect.Value
```
<b>例子:</b>
```go
@@ -54,33 +57,18 @@ import (
)
func main() {
arr := []string{"a", "b"}
f := function.After(len(arr), func(i int) int {
fmt.Println("last print")
return i
})
fn := function.After(2, func() {
fmt.Println("hello")
})
type cb func(args ...any) []reflect.Value
print := func(i int, s string, fn cb) {
fmt.Printf("arr[%d] is %s \n", i, s)
fn(i)
}
fn()
fn()
fmt.Println("arr is", arr)
for i := 0; i < len(arr); i++ {
print(i, arr[i], f)
}
//output:
// arr is [a b]
// arr[0] is a
// arr[1] is b
// last print
// Output:
// hello
}
```
### <span id="Before">Before</span>
<p>创建一个函数调用次数不超过n次之后再调用这个函数将返回一次最后调用fn的结果</p>
@@ -90,6 +78,7 @@ func main() {
```go
func Before(n int, fn any) func(args ...any) []reflect.Value
```
<b>例子:</b>
```go
@@ -102,28 +91,21 @@ import (
)
func main() {
arr := []string{"a", "b", "c", "d", "e"}
f := function.Before(3, func(i int) int {
return i
})
fn := function.Before(2, func() {
fmt.Println("hello")
})
var res []int64
type cb func(args ...any) []reflect.Value
appendStr := func(i int, s string, fn cb) {
v := fn(i)
res = append(res, v[0].Int())
}
fn()
fn()
fn()
fn()
for i := 0; i < len(arr); i++ {
appendStr(i, arr[i], f)
}
fmt.Println(res) // 0, 1, 2, 2, 2
// Output:
// hello
// hello
}
```
### <span id="CurryFn">CurryFn</span>
<p>创建柯里化函数</p>
@@ -134,6 +116,7 @@ func main() {
type CurryFn[T any] func(...T) T
func (cf CurryFn[T]) New(val T) func(...T) T
```
<b>例子:</b>
```go
@@ -145,23 +128,24 @@ import (
)
func main() {
add := func(a, b int) int {
return a + b
}
add := func(a, b int) int {
return a + b
}
var addCurry CurryFn[int] = func(values ...int) int {
return add(values[0], values[1])
}
add1 := addCurry.New(1)
var addCurry function.CurryFn[int] = func(values ...int) int {
return add(values[0], values[1])
}
add1 := addCurry.New(1)
result := add1(2)
result := add1(2)
fmt.Println(result) //3
fmt.Println(result)
// Output:
// 3
}
```
### <span id="Compose">Compose</span>
<p>从右至左组合函数列表fnList返回组合后的函数</p>
@@ -171,6 +155,7 @@ func main() {
```go
func Compose[T any](fnList ...func(...T) T) func(...T) T
```
<b>例子:</b>
```go
@@ -182,22 +167,23 @@ import (
)
func main() {
toUpper := func(strs ...string) string {
return strings.ToUpper(strs[0])
}
toLower := func(strs ...string) string {
return strings.ToLower(strs[0])
}
transform := Compose(toUpper, toLower)
toUpper := func(strs ...string) string {
return strings.ToUpper(strs[0])
}
toLower := func(strs ...string) string {
return strings.ToLower(strs[0])
}
transform := function.Compose(toUpper, toLower)
result := transform("aBCde")
result := transform("aBCde")
fmt.Println(result) //ABCDE
fmt.Println(result)
// Output:
// ABCDE
}
```
### <span id="Debounced">Debounced</span>
<p>创建一个debounced函数该函数延迟调用fn直到自上次调用debounced函数后等待持续时间过去。</p>
@@ -207,6 +193,7 @@ func main() {
```go
func Debounced(fn func(), duration time.Duration) func()
```
<b>例子:</b>
```go
@@ -218,28 +205,35 @@ import (
)
func main() {
count := 0
add := func() {
count++
}
count := 0
add := func() {
count++
}
debouncedAdd := function.Debounced(add, 50*time.Microsecond)
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
function.debouncedAdd()
debouncedAdd := function.Debounced(add, 50*time.Microsecond)
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //1
debouncedAdd()
debouncedAdd()
debouncedAdd()
debouncedAdd()
function.debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count) //2
time.Sleep(100 * time.Millisecond)
fmt.Println(count)
debouncedAdd()
time.Sleep(100 * time.Millisecond)
fmt.Println(count)
// Output:
// 1
// 2
}
```
### <span id="Delay">Delay</span>
<p>延迟delay时间后调用函数</p>
@@ -249,6 +243,7 @@ func main() {
```go
func Delay(delay time.Duration, fn any, args ...any)
```
<b>例子:</b>
```go
@@ -260,15 +255,17 @@ import (
)
func main() {
var print = func(s string) {
fmt.Println(count) //test delay
}
function.Delay(2*time.Second, print, "test delay")
var print = func(s string) {
fmt.Println(s)
}
function.Delay(2*time.Second, print, "hello")
// Output:
// hello
}
```
### <span id="Schedule">Schedule</span>
<p>每次持续时间调用函数,直到关闭返回的 bool chan</p>
@@ -278,6 +275,7 @@ func main() {
```go
func Schedule(d time.Duration, fn any, args ...any) chan bool
```
<b>例子:</b>
```go
@@ -289,21 +287,24 @@ import (
)
func main() {
var res []string
appendStr := func(s string) {
res = append(res, s)
}
count := 0
stop := function.Schedule(1*time.Second, appendStr, "*")
time.Sleep(5 * time.Second)
close(stop)
increase := func() {
count++
}
fmt.Println(res) //[* * * * *]
stop := function.Schedule(2*time.Second, increase)
time.Sleep(2 * time.Second)
close(stop)
fmt.Println(count)
// Output:
// 2
}
```
### <span id="Pipeline">Pipeline</span>
<p>执行函数pipeline.</p>
@@ -313,6 +314,7 @@ func main() {
```go
func Pipeline[T any](funcs ...func(T) T) func(T) T
```
<b>例子:</b>
```go
@@ -325,23 +327,26 @@ import (
func main() {
addOne := func(x int) int {
return x + 1
}
double := func(x int) int {
return 2 * x
}
square := func(x int) int {
return x * x
}
return x + 1
}
double := func(x int) int {
return 2 * x
}
square := func(x int) int {
return x * x
}
f := Pipeline(addOne, double, square)
fn := function.Pipeline(addOne, double, square)
fmt.Println(fn(2)) //36
result := fn(2)
fmt.Println(result)
// Output:
// 36
}
```
### <span id="Watcher">Watcher</span>
<p>Watcher用于记录代码执行时间。可以启动/停止/重置手表定时器。获取函数执行的时间。</p>
@@ -350,9 +355,9 @@ func main() {
```go
type Watcher struct {
startTime int64
stopTime int64
excuting bool
startTime int64
stopTime int64
excuting bool
}
func NewWatcher() *Watcher
func (w *Watcher) Start() //start the watcher
@@ -360,6 +365,7 @@ func (w *Watcher) Stop() //stop the watcher
func (w *Watcher) Reset() //reset the watcher
func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
```
<b>例子:</b>
```go
@@ -373,30 +379,27 @@ import (
func main() {
w := function.NewWatcher()
w.Start()
w.Start()
longRunningTask()
longRunningTask()
fmt.Println(w.excuting) //true
fmt.Println(w.excuting) //true
w.Stop()
w.Stop()
eapsedTime := w.GetElapsedTime().Milliseconds()
fmt.Println(eapsedTime)
eapsedTime := w.GetElapsedTime().Milliseconds()
w.Reset()
fmt.Println(eapsedTime)
w.Reset()
}
func longRunningTask() {
var slice []int64
for i := 0; i < 10000000; i++ {
slice = append(slice, int64(i))
}
var slice []int64
for i := 0; i < 10000000; i++ {
slice = append(slice, int64(i))
}
}
```

View File

@@ -1,16 +1,17 @@
# Maputil
Package maputil includes some functions to manipulate map.
<div STYLE="page-break-after: always;"></div>
## Source:
- [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
- [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
<div STYLE="page-break-after: always;"></div>
## Example:
```go
import (
"github.com/duke-git/lancet/v2/maputil"
@@ -20,22 +21,22 @@ import (
<div STYLE="page-break-after: always;"></div>
## Index
- [ForEach](#ForEach)
- [Filter](#Filter)
- [Intersect](#Intersect)
- [Keys](#Keys)
- [Merge](#Merge)
- [Minus](#Minus)
- [Values](#Values)
- [IsDisjoint](#IsDisjoint)
- [ForEach](#ForEach)
- [Filter](#Filter)
- [Intersect](#Intersect)
- [Keys](#Keys)
- [Merge](#Merge)
- [Minus](#Minus)
- [Values](#Values)
- [IsDisjoint](#IsDisjoint)
<div STYLE="page-break-after: always;"></div>
## Documentation
### <span id="ForEach">ForEach</span>
<p>Executes iteratee funcation for every key and value pair in map.</p>
<b>Signature:</b>
@@ -43,6 +44,7 @@ import (
```go
func ForEach[K comparable, V any](m map[K]V, iteratee func(key K, value V))
```
<b>Example:</b>
```go
@@ -54,26 +56,28 @@ import (
)
func main() {
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
}
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
}
var sum int
var sum int
maputil.ForEach(m, func(_ string, value int) {
sum += value
})
fmt.Println(sum) // 10
maputil.ForEach(m, func(_ string, value int) {
sum += value
})
fmt.Println(sum)
// Output:
// 10
}
```
### <span id="Filter">Filter</span>
<p>Iterates over map, return a new map contains all key and value pairs pass the predicate function.</p>
<b>Signature:</b>
@@ -81,6 +85,7 @@ func main() {
```go
func Filter[K comparable, V any](m map[K]V, predicate func(key K, value V) bool) map[K]V
```
<b>Example:</b>
```go
@@ -92,29 +97,32 @@ import (
)
func main() {
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
"e": 5,
}
isEven := func(_ string, value int) bool {
return value%2 == 0
}
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
"e": 5,
}
isEven := func(_ string, value int) bool {
return value%2 == 0
}
maputil.Filter(m, func(_ string, value int) {
sum += value
})
res := maputil.Filter(m, isEven)
fmt.Println(res) // map[string]int{"b": 2, "d": 4,}
maputil.Filter(m, func(_ string, value int) {
sum += value
})
result := maputil.Filter(m, isEven)
fmt.Println(result)
// Output:
// map[b:2 d:4]
}
```
### <span id="Intersect">Intersect</span>
<p>Iterates over maps, return a new map of key and value pairs in all given maps.</p>
<b>Signature:</b>
@@ -122,6 +130,7 @@ func main() {
```go
func Intersect[K comparable, V any](maps ...map[K]V) map[K]V
```
<b>Example:</b>
```go
@@ -133,37 +142,42 @@ import (
)
func main() {
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m2 := map[string]int{
"a": 1,
"b": 2,
"c": 6,
"d": 7,
}
m2 := map[string]int{
"a": 1,
"b": 2,
"c": 6,
"d": 7,
}
m3 := map[string]int{
"a": 1,
"b": 9,
"e": 9,
}
m3 := map[string]int{
"a": 1,
"b": 9,
"e": 9,
}
fmt.Println(maputil.Intersect(m1)) // map[string]int{"a": 1, "b": 2, "c": 3}
result1 := maputil.Intersect(m1)
result2 := maputil.Intersect(m1, m2)
result3 := maputil.Intersect(m1, m2, m3)
fmt.Println(maputil.Intersect(m1, m2)) // map[string]int{"a": 1, "b": 2}
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
fmt.Println(maputil.Intersect(m1, m2, m3)) // map[string]int{"a": 1}
// Output:
// map[a:1 b:2 c:3]
// map[a:1 b:2]
// map[a:1]
}
```
### <span id="Keys">Keys</span>
<p>Returns a slice of the map's keys.</p>
<b>Signature:</b>
@@ -171,6 +185,7 @@ func main() {
```go
func Keys[K comparable, V any](m map[K]V) []K
```
<b>Example:</b>
```go
@@ -182,24 +197,26 @@ import (
)
func main() {
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
keys := maputil.Keys(m)
sort.Ints(keys)
fmt.Println(keys) // []int{1, 2, 3, 4, 5}
keys := maputil.Keys(m)
sort.Ints(keys)
fmt.Println(keys)
// Output:
// [1 2 3 4 5]
}
```
### <span id="Merge">Merge</span>
<p>Merge maps, next key will overwrite previous key.</p>
<b>Signature:</b>
@@ -207,6 +224,7 @@ func main() {
```go
func Merge[K comparable, V any](maps ...map[K]V) map[K]V
```
<b>Example:</b>
```go
@@ -218,22 +236,26 @@ import (
)
func main() {
m1 := map[int]string{
1: "a",
2: "b",
}
m2 := map[int]string{
1: "1",
3: "2",
}
fmt.Println(maputil.Merge(m1, m2)) // map[int]string{1:"1", 2:"b", 3:"2",}
m1 := map[int]string{
1: "a",
2: "b",
}
m2 := map[int]string{
1: "1",
3: "2",
}
result := maputil.Merge(m1, m2)
fmt.Println(result)
// Output:
// map[1:c 2:b 3:d]
}
```
### <span id="Minus">Minus</span>
<p>Creates an map of whose key in mapA but not in mapB.</p>
<b>Signature:</b>
@@ -241,6 +263,7 @@ func main() {
```go
func Minus[K comparable, V any](mapA, mapB map[K]V) map[K]V
```
<b>Example:</b>
```go
@@ -252,25 +275,29 @@ import (
)
func main() {
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m2 := map[string]int{
"a": 11,
"b": 22,
"d": 33,
}
m2 := map[string]int{
"a": 11,
"b": 22,
"d": 33,
}
result := maputil.Minus(m1, m2)
fmt.Println(maputil.Minus(m1, m2)) //map[string]int{"c": 3}
fmt.Println(result)
// Output:
// map[c:3]
}
```
### <span id="Values">Values</span>
<p>Returns a slice of the map's values.</p>
<b>Signature:</b>
@@ -278,6 +305,7 @@ func main() {
```go
func Values[K comparable, V any](m map[K]V) []V
```
<b>Example:</b>
```go
@@ -289,22 +317,26 @@ import (
)
func main() {
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
values := maputil.Values(m)
sort.Strings(values)
values := maputil.Values(m)
sort.Strings(values)
fmt.Println(values) // []string{"a", "a", "b", "c", "d"}
fmt.Println(values)
// Output:
// [a a b c d]
}
```
### <span id="IsDisjoint">IsDisjoint</span>
<p>Checks two maps are disjoint if they have no keys in common</p>
<b>Signature:</b>
@@ -312,6 +344,7 @@ func main() {
```go
func IsDisjoint[K comparable, V any](mapA, mapB map[K]V) bool
```
<b>Example:</b>
```go
@@ -323,30 +356,28 @@ import (
)
func main() {
m1 := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m2 := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m2 := map[string]int{
"d": 22,
}
m3 := map[int]string{
6: "a",
}
m3 := map[string]int{
"a": 22,
}
ok := maputil.IsDisjoint(m2, m1)
fmt.Println(ok) // false
result1 := maputil.IsDisjoint(m1, m2)
result2 := maputil.IsDisjoint(m1, m3)
ok = maputil.IsDisjoint(m2, m3)
fmt.Println(ok) // true
fmt.Println(result1)
fmt.Println(result2)
// Output:
// true
// false
}
```
```

View File

@@ -1,16 +1,17 @@
# Maputil
maputil包包括一些操作map的函数。
maputil 包包括一些操作 map 的函数。
<div STYLE="page-break-after: always;"></div>
## 源码:
- [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
- [https://github.com/duke-git/lancet/blob/main/maputil/map.go](https://github.com/duke-git/lancet/blob/main/maputil/map.go)
<div STYLE="page-break-after: always;"></div>
## 用法:
```go
import (
"github.com/duke-git/lancet/v2/maputil"
@@ -20,22 +21,22 @@ import (
<div STYLE="page-break-after: always;"></div>
## 目录:
- [ForEach](#ForEach)
- [Filter](#Filter)
- [Intersect](#Intersect)
- [Keys](#Keys)
- [Merge](#Merge)
- [Minus](#Minus)
- [Values](#Values)
- [IsDisjoint](#IsDisjoint)
- [ForEach](#ForEach)
- [Filter](#Filter)
- [Intersect](#Intersect)
- [Keys](#Keys)
- [Merge](#Merge)
- [Minus](#Minus)
- [Values](#Values)
- [IsDisjoint](#IsDisjoint)
<div STYLE="page-break-after: always;"></div>
## API文档:
## API 文档:
### <span id="ForEach">ForEach</span>
<p>对map中的每对key和value执行iteratee函数</p>
<b>函数签名:</b>
@@ -43,6 +44,7 @@ import (
```go
func ForEach[K comparable, V any](m map[K]V, iteratee func(key K, value V))
```
<b>例子:</b>
```go
@@ -54,26 +56,28 @@ import (
)
func main() {
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
}
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
}
var sum int
var sum int
maputil.ForEach(m, func(_ string, value int) {
sum += value
})
fmt.Println(sum) // 10
maputil.ForEach(m, func(_ string, value int) {
sum += value
})
fmt.Println(sum)
// Output:
// 10
}
```
### <span id="Filter">Filter</span>
<p>迭代map中的每对key和value, 返回符合predicate函数的key, value</p>
<b>函数签名:</b>
@@ -81,6 +85,7 @@ func main() {
```go
func Filter[K comparable, V any](m map[K]V, predicate func(key K, value V) bool) map[K]V
```
<b>例子:</b>
```go
@@ -92,29 +97,32 @@ import (
)
func main() {
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
"e": 5,
}
isEven := func(_ string, value int) bool {
return value%2 == 0
}
m := map[string]int{
"a": 1,
"b": 2,
"c": 3,
"d": 4,
"e": 5,
}
isEven := func(_ string, value int) bool {
return value%2 == 0
}
maputil.Filter(m, func(_ string, value int) {
sum += value
})
res := maputil.Filter(m, isEven)
fmt.Println(res) // map[string]int{"b": 2, "d": 4,}
maputil.Filter(m, func(_ string, value int) {
sum += value
})
result := Filter(m, isEven)
fmt.Println(result)
// Output:
// map[b:2 d:4]
}
```
### <span id="Intersect">Intersect</span>
<p>多个map的交集操作</p>
<b>函数签名:</b>
@@ -122,6 +130,7 @@ func main() {
```go
func Intersect[K comparable, V any](maps ...map[K]V) map[K]V
```
<b>例子:</b>
```go
@@ -133,37 +142,42 @@ import (
)
func main() {
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m2 := map[string]int{
"a": 1,
"b": 2,
"c": 6,
"d": 7,
}
m2 := map[string]int{
"a": 1,
"b": 2,
"c": 6,
"d": 7,
}
m3 := map[string]int{
"a": 1,
"b": 9,
"e": 9,
}
m3 := map[string]int{
"a": 1,
"b": 9,
"e": 9,
}
fmt.Println(maputil.Intersect(m1)) // map[string]int{"a": 1, "b": 2, "c": 3}
result1 := maputil.Intersect(m1)
result2 := maputil.Intersect(m1, m2)
result3 := maputil.Intersect(m1, m2, m3)
fmt.Println(maputil.Intersect(m1, m2)) // map[string]int{"a": 1, "b": 2}
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
fmt.Println(maputil.Intersect(m1, m2, m3)) // map[string]int{"a": 1}
// Output:
// map[a:1 b:2 c:3]
// map[a:1 b:2]
// map[a:1]
}
```
### <span id="Keys">Keys</span>
<p>返回map中所有key的切片</p>
<b>函数签名:</b>
@@ -171,6 +185,7 @@ func main() {
```go
func Keys[K comparable, V any](m map[K]V) []K
```
<b>例子:</b>
```go
@@ -182,24 +197,26 @@ import (
)
func main() {
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
keys := maputil.Keys(m)
sort.Ints(keys)
fmt.Println(keys) // []int{1, 2, 3, 4, 5}
keys := maputil.Keys(m)
sort.Ints(keys)
fmt.Println(keys)
// Output:
// [1 2 3 4 5]
}
```
### <span id="Merge">Merge</span>
<p>合并多个maps, 相同的key会被后来的key覆盖</p>
<b>函数签名:</b>
@@ -207,6 +224,7 @@ func main() {
```go
func Merge[K comparable, V any](maps ...map[K]V) map[K]V
```
<b>例子:</b>
```go
@@ -218,21 +236,26 @@ import (
)
func main() {
m1 := map[int]string{
1: "a",
2: "b",
}
m2 := map[int]string{
1: "1",
3: "2",
}
fmt.Println(maputil.Merge(m1, m2)) // map[int]string{1:"1", 2:"b", 3:"2",}
m1 := map[int]string{
1: "a",
2: "b",
}
m2 := map[int]string{
1: "1",
3: "2",
}
result := maputil.Merge(m1, m2)
fmt.Println(result)
// Output:
// map[1:c 2:b 3:d]
}
```
### <span id="Minus">Minus</span>
<p>返回一个map其中的key存在于mapA不存在于mapB.</p>
<b>函数签名:</b>
@@ -240,6 +263,7 @@ func main() {
```go
func Minus[K comparable, V any](mapA, mapB map[K]V) map[K]V
```
<b>例子:</b>
```go
@@ -251,25 +275,29 @@ import (
)
func main() {
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m2 := map[string]int{
"a": 11,
"b": 22,
"d": 33,
}
m2 := map[string]int{
"a": 11,
"b": 22,
"d": 33,
}
fmt.Println(maputil.Minus(m1, m2)) //map[string]int{"c": 3}
result := maputil.Minus(m1, m2)
fmt.Println(result)
// Output:
// map[c:3]
}
```
### <span id="Values">Values</span>
<p>返回map中所有value的切片</p>
<b>函数签名:</b>
@@ -277,6 +305,7 @@ func main() {
```go
func Values[K comparable, V any](m map[K]V) []V
```
<b>例子:</b>
```go
@@ -288,23 +317,24 @@ import (
)
func main() {
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
values := maputil.Values(m)
sort.Strings(values)
values := maputil.Values(m)
sort.Strings(values)
fmt.Println(values) // []string{"a", "a", "b", "c", "d"}
// Output:
// [a a b c d]
}
```
### <span id="IsDisjoint">IsDisjoint</span>
<p>验证两个map是否具有不同的key</p>
<b>函数签名:</b>
@@ -312,6 +342,7 @@ func main() {
```go
func IsDisjoint[K comparable, V any](mapA, mapB map[K]V) bool
```
<b>例子:</b>
```go
@@ -323,30 +354,28 @@ import (
)
func main() {
m1 := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m1 := map[string]int{
"a": 1,
"b": 2,
"c": 3,
}
m2 := map[int]string{
1: "a",
2: "a",
3: "b",
4: "c",
5: "d",
}
m2 := map[string]int{
"d": 22,
}
m3 := map[int]string{
6: "a",
}
m3 := map[string]int{
"a": 22,
}
ok := maputil.IsDisjoint(m2, m1)
fmt.Println(ok) // false
result1 := maputil.IsDisjoint(m1, m2)
result2 := maputil.IsDisjoint(m1, m3)
ok = maputil.IsDisjoint(m2, m3)
fmt.Println(ok) // true
fmt.Println(result1)
fmt.Println(result2)
// Output:
// true
// false
}
```
```

View File

@@ -1,16 +1,17 @@
# Mathutil
Package mathutil implements some functions for math calculation.
<div STYLE="page-break-after: always;"></div>
## Source:
- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
<div STYLE="page-break-after: always;"></div>
## Example:
```go
import (
"github.com/duke-git/lancet/v2/mathutil"
@@ -20,26 +21,26 @@ import (
<div STYLE="page-break-after: always;"></div>
## Index
- [Average](#Average)
- [Exponent](#Exponent)
- [Fibonacci](#Fibonacci)
- [Factorial](#Factorial)
- [Max](#Max)
- [MaxBy](#MaxBy)
- [Min](#Min)
- [MinBy](#MaxBy)
- [Percent](#Percent)
- [RoundToFloat](#RoundToFloat)
- [RoundToString](#RoundToString)
- [TruncRound](#TruncRound)
- [Average](#Average)
- [Exponent](#Exponent)
- [Fibonacci](#Fibonacci)
- [Factorial](#Factorial)
- [Max](#Max)
- [MaxBy](#MaxBy)
- [Min](#Min)
- [MinBy](#MaxBy)
- [Percent](#Percent)
- [RoundToFloat](#RoundToFloat)
- [RoundToString](#RoundToString)
- [TruncRound](#TruncRound)
<div STYLE="page-break-after: always;"></div>
## Documentation
### <span id="Average">Average</span>
<p>Return average value of numbers. Maybe call RoundToFloat to round result.</p>
<b>Signature:</b>
@@ -47,6 +48,7 @@ import (
```go
func Average[T constraints.Integer | constraints.Float](numbers ...T) T
```
<b>Example:</b>
```go
@@ -58,16 +60,22 @@ import (
)
func main() {
fmt.Println(mathutil.Average(0, 0)) //0
fmt.Println(mathutil.Average(1, 1)) //1
avg := mathutil.Average(1.2, 1.4) //1.2999999998
roundAvg := mmathutil.RoundToFloat(avg, 1) // 1.3
result1 := mathutil.Average(1, 2)
avg := mathutil.Average(1.2, 1.4)
result2 := mathutil.RoundToFloat(avg, 1)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 1
// 1.3
}
```
### <span id="Exponent">Exponent</span>
<p>Calculate x to the nth power.</p>
<b>Signature:</b>
@@ -75,6 +83,7 @@ func main() {
```go
func Exponent(x, n int64) int64
```
<b>Example:</b>
```go
@@ -86,15 +95,23 @@ import (
)
func main() {
fmt.Println(mathutil.Exponent(10, 0)) //1
fmt.Println(mathutil.Exponent(10, 1)) //10
fmt.Println(mathutil.Exponent(10, 2)) //100
result1 := mathutil.Exponent(10, 0)
result2 := mathutil.Exponent(10, 1)
result3 := mathutil.Exponent(10, 2)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 1
// 10
// 100
}
```
### <span id="Fibonacci">Fibonacci</span>
<p>Calculate the nth number of fibonacci sequence.</p>
<b>Signature:</b>
@@ -102,6 +119,7 @@ func main() {
```go
func Fibonacci(first, second, n int) int
```
<b>Example:</b>
```go
@@ -113,17 +131,23 @@ import (
)
func main() {
fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
result1 := mathutil.Fibonacci(1, 1, 1)
result2 := mathutil.Fibonacci(1, 1, 2)
result3 := mathutil.Fibonacci(1, 1, 5)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 1
// 1
// 5
}
```
### <span id="Factorial">Factorial</span>
<p>Calculate the factorial of x.</p>
<b>Signature:</b>
@@ -131,6 +155,7 @@ func main() {
```go
func Factorial(x uint) uint
```
<b>Example:</b>
```go
@@ -142,16 +167,23 @@ import (
)
func main() {
fmt.Println(mathutil.Factorial(0)) //1
fmt.Println(mathutil.Factorial(1)) //1
fmt.Println(mathutil.Factorial(2)) //2
fmt.Println(mathutil.Factorial(3)) //6
result1 := mathutil.Factorial(1)
result2 := mathutil.Factorial(2)
result3 := mathutil.Factorial(3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 1
// 2
// 6
}
```
### <span id="Max">Max</span>
<p>Return max value of numbers.</p>
<b>Signature:</b>
@@ -159,6 +191,7 @@ func main() {
```go
func Max[T constraints.Integer | constraints.Float](numbers ...T) T
```
<b>Example:</b>
```go
@@ -170,23 +203,28 @@ import (
)
func main() {
fmt.Println(mathutil.Max(0, 0)) //0
fmt.Println(mathutil.Max(1, 2, 3)) //3
fmt.Println(mathutil.Max(1.2, 1.4, 1.1, 1.4)) //1.4
result1 := mathutil.Max(1, 2, 3)
result2 := mathutil.Max(1.2, 1.4, 1.1, 1.4)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 3
// 1.4
}
```
### <span id="MaxBy">MaxBy</span>
<p>Return the maximum value of a slice using the given comparator function.</p>
<b>Signature:</b>
```go
func MaxBy[T any](slice []T, comparator func(T, T) bool) T
func MaxBy[T any](slice []T, comparator func(T, T) bool) T
```
<b>Example:</b>
```go
@@ -198,26 +236,31 @@ import (
)
func main() {
res1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(res1) //abc
result1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
res2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(res2) //abd
result2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
res3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(res3) //“”
result3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// abc
// abd
//
}
```
### <span id="Min">Min</span>
<p>Return the minimum value of numbers.</p>
<b>Signature:</b>
@@ -225,6 +268,7 @@ func main() {
```go
func Min[T constraints.Integer | constraints.Float](numbers ...T) T
```
<b>Example:</b>
```go
@@ -236,22 +280,28 @@ import (
)
func main() {
fmt.Println(mathutil.Min(0, 0)) //0
fmt.Println(mathutil.Min(1, 2, 3)) //1
fmt.Println(mathutil.Min(1.2, 1.4, 1.1, 1.4)) //1.1
result1 := mathutil.Min(1, 2, 3)
result2 := mathutil.Min(1.2, 1.4, 1.1, 1.4)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 1
// 1.1
}
```
### <span id="MinBy">MinBy</span>
<p>Return the minimum value of a slice using the given comparator function.</p>
<b>Signature:</b>
```go
func MinBy[T any](slice []T, comparator func(T, T) bool) T
func MinBy[T any](slice []T, comparator func(T, T) bool) T
```
<b>Example:</b>
```go
@@ -263,27 +313,31 @@ import (
)
func main() {
res1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(res1) //a
result1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
res2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(res2) //ab
result2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
res3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(res3) //“”
result3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// a
// ab
//
}
```
### <span id="Percent">Percent</span>
<p>calculate the percentage of val to total, retain n decimal places.</p>
<b>Signature:</b>
@@ -291,6 +345,7 @@ func main() {
```go
func Percent(val, total float64, n int) float64
```
<b>Example:</b>
```go
@@ -302,14 +357,20 @@ import (
)
func main() {
fmt.Println(mathutil.Percent(1, 2, 2)) //0.5
fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //0.33
result1 := mathutil.Percent(1, 2, 2)
result2 := mathutil.Percent(0.1, 0.3, 2)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 0.5
// 0.33
}
```
### <span id="RoundToFloat">RoundToFloat</span>
<p>Round float up to n decimal places.</p>
<b>Signature:</b>
@@ -317,6 +378,7 @@ func main() {
```go
func RoundToFloat(x float64, n int) float64
```
<b>Example:</b>
```go
@@ -328,18 +390,23 @@ import (
)
func main() {
fmt.Println(mathutil.RoundToFloat(0, 0)) //0
fmt.Println(mathutil.RoundToFloat(0, 1)) //0
fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
result1 := mathutil.RoundToFloat(0.124, 2)
result2 := mathutil.RoundToFloat(0.125, 2)
result3 := mathutil.RoundToFloat(0.125, 3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 0.12
// 0.13
// 0.125
}
```
### <span id="RoundToString">RoundToString</span>
<p>Round float up to n decimal places. will return string.</p>
<b>Signature:</b>
@@ -347,6 +414,7 @@ func main() {
```go
func RoundToString(x float64, n int) string
```
<b>Example:</b>
```go
@@ -358,17 +426,23 @@ import (
)
func main() {
fmt.Println(mathutil.RoundToString(0, 0)) //"0"
fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
result1 := mathutil.RoundToString(0.124, 2)
result2 := mathutil.RoundToString(0.125, 2)
result3 := mathutil.RoundToString(0.125, 3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 0.12
// 0.13
// 0.125
}
```
### <span id="TruncRound">TruncRound</span>
<p>Round float off n decimal places.</p>
<b>Signature:</b>
@@ -376,6 +450,7 @@ func main() {
```go
func TruncRound(x float64, n int) float64
```
<b>Example:</b>
```go
@@ -387,13 +462,17 @@ import (
)
func main() {
fmt.Println(mathutil.TruncRound(0, 0)) //0
fmt.Println(mathutil.TruncRound(0, 1)) //0
fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
result1 := mathutil.TruncRound(0.124, 2)
result2 := mathutil.TruncRound(0.125, 2)
result3 := mathutil.TruncRound(0.125, 3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 0.12
// 0.12
// 0.125
}
```

View File

@@ -1,16 +1,17 @@
# Mathutil
mathutil包实现了一些数学计算的函数.
mathutil 包实现了一些数学计算的函数.
<div STYLE="page-break-after: always;"></div>
## 源码:
- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
- [https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/main/mathutil/mathutil.go)
<div STYLE="page-break-after: always;"></div>
## 用法:
```go
import (
"github.com/duke-git/lancet/v2/mathutil"
@@ -20,25 +21,26 @@ import (
<div STYLE="page-break-after: always;"></div>
## 目录
- [Average](#Average)
- [Exponent](#Exponent)
- [Fibonacci](#Fibonacci)
- [Factorial](#Factorial)
- [Max](#Max)
- [MaxBy](#MaxBy)
- [Min](#Min)
- [MinBy](#MaxBy)
- [Percent](#Percent)
- [RoundToFloat](#RoundToFloat)
- [RoundToString](#RoundToString)
- [TruncRound](#TruncRound)
- [Average](#Average)
- [Exponent](#Exponent)
- [Fibonacci](#Fibonacci)
- [Factorial](#Factorial)
- [Max](#Max)
- [MaxBy](#MaxBy)
- [Min](#Min)
- [MinBy](#MaxBy)
- [Percent](#Percent)
- [RoundToFloat](#RoundToFloat)
- [RoundToString](#RoundToString)
- [TruncRound](#TruncRound)
<div STYLE="page-break-after: always;"></div>
## Documentation
### <span id="Average">Average</span>
<p>计算平均数. 可能需要对结果调用RoundToFloat方法四舍五入</p>
<b>函数签名:</b>
@@ -46,6 +48,7 @@ import (
```go
func Average[T constraints.Integer | constraints.Float](numbers ...T) T
```
<b>例子:</b>
```go
@@ -57,15 +60,22 @@ import (
)
func main() {
fmt.Println(mathutil.Average(0, 0)) //0
fmt.Println(mathutil.Average(1, 1)) //1
avg := mathutil.Average(1.2, 1.4) //1.2999999998
roundAvg := mmathutil.RoundToFloat(avg, 1) // 1.3
result1 := mathutil.Average(1, 2)
avg := mathutil.Average(1.2, 1.4)
result2 := mathutil.RoundToFloat(avg, 1)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 1
// 1.3
}
```
### <span id="Exponent">Exponent</span>
<p>指数计算x的n次方</p>
<b>函数签名:</b>
@@ -73,6 +83,7 @@ func main() {
```go
func Exponent(x, n int64) int64
```
<b>例子:</b>
```go
@@ -84,15 +95,23 @@ import (
)
func main() {
fmt.Println(mathutil.Exponent(10, 0)) //1
fmt.Println(mathutil.Exponent(10, 1)) //10
fmt.Println(mathutil.Exponent(10, 2)) //100
result1 := mathutil.Exponent(10, 0)
result2 := mathutil.Exponent(10, 1)
result3 := mathutil.Exponent(10, 2)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 1
// 10
// 100
}
```
### <span id="Fibonacci">Fibonacci</span>
<p>计算斐波那契数列的第n个数</p>
<b>函数签名:</b>
@@ -100,6 +119,7 @@ func main() {
```go
func Fibonacci(first, second, n int) int
```
<b>例子:</b>
```go
@@ -111,17 +131,23 @@ import (
)
func main() {
fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
result1 := mathutil.Fibonacci(1, 1, 1)
result2 := mathutil.Fibonacci(1, 1, 2)
result3 := mathutil.Fibonacci(1, 1, 5)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 1
// 1
// 5
}
```
### <span id="Factorial">Factorial</span>
<p>计算阶乘</p>
<b>函数签名:</b>
@@ -129,6 +155,7 @@ func main() {
```go
func Factorial(x uint) uint
```
<b>例子:</b>
```go
@@ -140,15 +167,23 @@ import (
)
func main() {
fmt.Println(mathutil.Factorial(0)) //1
fmt.Println(mathutil.Factorial(1)) //1
fmt.Println(mathutil.Factorial(2)) //2
fmt.Println(mathutil.Factorial(3)) //6
result1 := mathutil.Factorial(1)
result2 := mathutil.Factorial(2)
result3 := mathutil.Factorial(3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 1
// 2
// 6
}
```
### <span id="Max">Max</span>
<p>返回参数中的最大数</p>
<b>函数签名:</b>
@@ -156,6 +191,7 @@ func main() {
```go
func Max[T constraints.Integer | constraints.Float](numbers ...T) T
```
<b>例子:</b>
```go
@@ -167,22 +203,28 @@ import (
)
func main() {
fmt.Println(mathutil.Max(0, 0)) //0
fmt.Println(mathutil.Max(1, 2, 3)) //3
fmt.Println(mathutil.Max(1.2, 1.4, 1.1, 1.4)) //1.4
result1 := mathutil.Max(1, 2, 3)
result2 := mathutil.Max(1.2, 1.4, 1.1, 1.4)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 3
// 1.4
}
```
### <span id="MaxBy">MaxBy</span>
<p>使用给定的比较器函数返回切片的最大值</p>
<b>函数签名:</b>
```go
func MaxBy[T any](slice []T, comparator func(T, T) bool) T
func MaxBy[T any](slice []T, comparator func(T, T) bool) T
```
<b>例子:</b>
```go
@@ -194,27 +236,31 @@ import (
)
func main() {
res1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(res1) //abc
result1 := mathutil.MaxBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
res2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(res2) //abd
result2 := mathutil.MaxBy([]string{"abd", "abc", "ab"}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
res3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(res3) //“”
result3 := mathutil.MaxBy([]string{}, func(v1, v2 string) bool {
return len(v1) > len(v2)
})
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// abc
// abd
//
}
```
### <span id="Min">Min</span>
<p>返回参数中的最小数</p>
<b>函数签名:</b>
@@ -222,6 +268,7 @@ func main() {
```go
func Min[T constraints.Integer | constraints.Float](numbers ...T) T
```
<b>例子:</b>
```go
@@ -233,22 +280,28 @@ import (
)
func main() {
fmt.Println(mathutil.Min(0, 0)) //0
fmt.Println(mathutil.Min(1, 2, 3)) //1
fmt.Println(mathutil.Min(1.2, 1.4, 1.1, 1.4)) //1.1
result1 := mathutil.Min(1, 2, 3)
result2 := mathutil.Min(1.2, 1.4, 1.1, 1.4)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 1
// 1.1
}
```
### <span id="MinBy">MinBy</span>
<p>使用给定的比较器函数返回切片的最小值</p>
<b>函数签名:</b>
```go
func MinBy[T any](slice []T, comparator func(T, T) bool) T
func MinBy[T any](slice []T, comparator func(T, T) bool) T
```
<b>例子:</b>
```go
@@ -260,27 +313,31 @@ import (
)
func main() {
res1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(res1) //a
result1 := mathutil.MinBy([]string{"a", "ab", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
res2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(res2) //ab
result2 := mathutil.MinBy([]string{"ab", "ac", "abc"}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
res3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(res3) //“”
result3 := mathutil.MinBy([]string{}, func(v1, v2 string) bool {
return len(v1) < len(v2)
})
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// a
// ab
//
}
```
### <span id="Percent">Percent</span>
<p>计算百分比保留n位小数</p>
<b>函数签名:</b>
@@ -288,6 +345,7 @@ func main() {
```go
func Percent(val, total float64, n int) float64
```
<b>例子:</b>
```go
@@ -299,14 +357,20 @@ import (
)
func main() {
fmt.Println(mathutil.Percent(1, 2, 2)) //0.5
fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //0.33
result1 := mathutil.Percent(1, 2, 2)
result2 := mathutil.Percent(0.1, 0.3, 2)
fmt.Println(result1)
fmt.Println(result2)
// Output:
// 0.5
// 0.33
}
```
### <span id="RoundToFloat">RoundToFloat</span>
<p>四舍五入保留n位小数</p>
<b>函数签名:</b>
@@ -314,6 +378,7 @@ func main() {
```go
func RoundToFloat(x float64, n int) float64
```
<b>例子:</b>
```go
@@ -325,18 +390,23 @@ import (
)
func main() {
fmt.Println(mathutil.RoundToFloat(0, 0)) //0
fmt.Println(mathutil.RoundToFloat(0, 1)) //0
fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
result1 := mathutil.RoundToFloat(0.124, 2)
result2 := mathutil.RoundToFloat(0.125, 2)
result3 := mathutil.RoundToFloat(0.125, 3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 0.12
// 0.13
// 0.125
}
```
### <span id="RoundToString">RoundToString</span>
<p>四舍五入保留n位小数返回字符串</p>
<b>函数签名:</b>
@@ -344,6 +414,7 @@ func main() {
```go
func RoundToString(x float64, n int) string
```
<b>例子:</b>
```go
@@ -355,17 +426,23 @@ import (
)
func main() {
fmt.Println(mathutil.RoundToString(0, 0)) //"0"
fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
result1 := mathutil.RoundToString(0.124, 2)
result2 := mathutil.RoundToString(0.125, 2)
result3 := mathutil.RoundToString(0.125, 3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 0.12
// 0.13
// 0.125
}
```
### <span id="TruncRound">TruncRound</span>
<p>截短n位小数不进行四舍五入</p>
<b>函数签名:</b>
@@ -373,6 +450,7 @@ func main() {
```go
func TruncRound(x float64, n int) float64
```
<b>例子:</b>
```go
@@ -384,13 +462,17 @@ import (
)
func main() {
fmt.Println(mathutil.TruncRound(0, 0)) //0
fmt.Println(mathutil.TruncRound(0, 1)) //0
fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
result1 := mathutil.TruncRound(0.124, 2)
result2 := mathutil.TruncRound(0.125, 2)
result3 := mathutil.TruncRound(0.125, 3)
fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
// Output:
// 0.12
// 0.12
// 0.125
}
```