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mirror of https://github.com/duke-git/lancet.git synced 2026-02-12 16:52:29 +08:00

doc: normalize documents

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

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@@ -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
}
```
```