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mirror of https://github.com/duke-git/lancet.git synced 2026-02-08 14:42:27 +08:00

Change naming (#177)

Utilize terminology from the Go SDK rather than introducing novel terms to describe concepts.
This commit is contained in:
donutloop
2024-02-24 10:25:31 +01:00
committed by GitHub
parent 860a499f98
commit fdc93c8cc7
4 changed files with 178 additions and 188 deletions

View File

@@ -22,17 +22,16 @@ import (
## 目录
- [Of](#Of)
- [OfNullable](#OfNullable)
- [Empty](#Empty)
- [IsPresent](#IsPresent)
- [IsEmpty](#IsEmpty)
- [IfPresent](#IfPresent)
- [IfPresentOrElse](#IfPresentOrElse)
- [Get](#Get)
- [FromNillable](#FromNillable)
- [Default](#Default)
- [IsNotNil](#IsNotNil)
- [IsNil](#IsNil)
- [IsNotNil](#IsNotNil)
- [IfNotNilOrElse](#IfPresentOrElse)
- [Umwarp](#Umwarp)
- [OrElse](#OrElse)
- [OrElseGet](#OrElseGet)
- [OrElseThrow](#OrElseThrow)
- [OrElseTrigger](#OrElseTrigger)
<div STYLE="page-break-after: always;"></div>
@@ -68,14 +67,13 @@ func main() {
}
```
### <span id="OfNullable">OfNullable</span>
### <span id="FromNillable">FromNillable</span>
<p>返回一个包含给定值的Optional该值可能为空 (nil)。</p>
<b>函数签名:</b>
```go
func OfNullable[T any](value *T) Optional[T]
func FromNillable[T any](value *T) Optional[T]
```
<b>示例:</b>
@@ -89,15 +87,15 @@ import (
func main() {
var value *int = nil
opt := optional.OfNullable(value)
opt := optional.FromNillable(value)
fmt.Println(opt.IsPresent())
fmt.Println(opt.IsNotNil())
value = new(int)
*value = 42
opt = optional.OfNullable(value)
opt = optional.FromNillable(value)
fmt.Println(opt.IsPresent())
fmt.Println(opt.IsNotNil())
// Output:
@@ -107,14 +105,13 @@ func main() {
```
### <span id="Empty">Empty</span>
### <span id="Default">Default</span>
<p>返回一个空Optional实例。</p>
<b>函数签名:</b>
```go
func Empty[T any]() Optional[T]
func Default[T any]() Optional[T]
```
<b>示例:</b>
@@ -127,8 +124,8 @@ import (
)
func main() {
optEmpty := OfNullable.Empty[int]()
fmt.Println(optEmpty.IsEmpty())
optDefault := optional.Default[int]()
fmt.Println(optDefault.IsNil())
// Output:
// true
@@ -136,14 +133,13 @@ func main() {
```
### <span id="IsEmpty">IsEmpty</span>
### <span id="IsNil">IsNil</span>
<p>验证Optional是否为空。</p>
<b>函数签名:</b>
```go
func (o Optional[T]) IsEmpty() bool
func (o Optional[T]) IsNil() bool
```
<b>示例:</b>
@@ -156,23 +152,21 @@ import (
)
func main() {
optEmpty := OfNullable.Empty[int]()
fmt.Println(optEmpty.IsEmpty())
optDefault := optional.Default[int]()
fmt.Println(optDefault.IsNil())
// Output:
// true
}
```
### <span id="IsPresent">IsPresent</span>
### <span id="IsNotNil">IsNotNil</span>
<p>检查当前Optional内是否存在值。</p>
<b>函数签名:</b>
```go
func (o Optional[T]) IsPresent() bool
func (o Optional[T]) IsNotNil() bool
```
<b>示例:</b>
@@ -181,20 +175,20 @@ package main
import (
"fmt"
optional "github.com/duke-git/lancet/v2/datastructure/optional"
"github.com/duke-git/lancet/v2/datastructure/optional"
)
func main() {
var value *int = nil
opt := optional.OfNullable(value)
opt := optional.FromNillable(value)
fmt.Println(opt.IsPresent())
fmt.Println(opt.IsNotNil())
value = new(int)
*value = 42
opt = optional.OfNullable(value)
opt = optional.FromNillable(value)
fmt.Println(opt.IsPresent())
fmt.Println(opt.IsNotNil())
// Output:
@@ -203,15 +197,13 @@ func main() {
}
```
### <span id="IfPresent">IfPresent</span>
### <span id="IfNotNil">IfNotNil</span>
<p>如果值存在则使用action方法执行给定的操作。</p>
<b>函数签名:</b>
```go
func (o Optional[T]) IfPresent(action func(value T))
func (o Optional[T]) IfNotNil(action func(value T))
```
<b>示例:</b>
@@ -220,23 +212,23 @@ package main
import (
"fmt"
optional "github.com/duke-git/lancet/v2/datastructure/optional"
"github.com/duke-git/lancet/v2/datastructure/optional"
)
func main() {
called := false
action := func(value int) { called = true }
optEmpty := optional.Empty[int]()
optEmpty.IfPresent(action)
optDefault := optional.Default[int]()
optDefault.IfNotNil(action)
fmt.Println(called)
called = false // Reset for next test
optWithValue := optional.Of(42)
optWithValue.IfPresent(action)
optWithValue.IfNotNil(action)
fmt.Println(optWithValue.IsPresent())
fmt.Println(optWithValue.IsNotNil())
// Output:
// false
@@ -245,14 +237,13 @@ func main() {
```
### <span id="IfPresentOrElse">IfPresentOrElse</span>
### <span id="IfNotNilOrElse">IfNotNilOrElse</span>
<p>根据是否存在值执行相应的操作:有值则执行指定操作,没有值则执行默认操作。</p>
<b>函数签名:</b>
```go
func (o Optional[T]) IfPresentOrElse(action func(value T), emptyAction func())
func (o Optional[T]) IfNotNilOrElse(action func(value T), fallbackAction func())
```
<b>示例:</b>
@@ -270,7 +261,7 @@ func main() {
emptyAction := func() { t.Errorf("Empty action should not be called when value is present") }
optWithValue := optional.Of(42)
optWithValue.IfPresentOrElse(valueAction, emptyAction)
optWithValue.IfNotNilOrElse(valueAction, emptyAction)
fmt.Println(calledWithValue)
@@ -278,8 +269,8 @@ func main() {
valueAction = func(value int) { t.Errorf("Value action should not be called when value is not present") }
emptyAction = func() { calledWithEmpty = true }
optEmpty := optional.Empty[int]()
optEmpty.IfPresentOrElse(valueAction, emptyAction)
optDefault := optional.Default[int]()
optDefault.IfNotNilOrElse(valueAction, emptyAction)
fmt.Println(calledWithEmpty)
@@ -289,13 +280,13 @@ func main() {
}
```
### <span id="Get">Get</span>
### <span id="Unwrap">Unwrap</span>
<p>如果存在返回该值否则引发panic。</p>
<b>函数签名:</b>
```go
func (o Optional[T]) Get() T
func (o Optional[T]) Unwrap() T
```
<b>示例:</b>
@@ -311,7 +302,7 @@ func main() {
value := 42
opt := optional.Of(value)
fmt.Println(opt.Get())
fmt.Println(opt.Unwrap())
// Output:
// 42
@@ -338,8 +329,8 @@ import (
)
func main() {
optEmpty := optional.Empty[int]()
val := optEmpty.OrElse(100)
optDefault := optional.Empty[int]()
val := optDefault.OrElse(100)
fmt.Println(val)
optWithValue := optional.Of(42)
@@ -359,7 +350,7 @@ func main() {
<b>函数签名:</b>
```go
func (o Optional[T]) OrElseGet(supplier func() T) T
func (o Optional[T]) OrElseGet(action func() T) T
```
<b>示例:</b>
@@ -372,10 +363,10 @@ import (
)
func main() {
optEmpty := optional.Empty[int]()
supplier := func() int { return 100 }
optDefault := optional.Default[int]()
action := func() int { return 100 }
val := optEmpty.OrElseGet(supplier)
val := optDefault.OrElseGet(action)
fmt.Println(val)
// Output:
@@ -383,14 +374,13 @@ func main() {
}
```
### <span id="OrElseThrow">OrElseThrow</span>
### <span id="OrElseTrigger">OrElseTrigger</span>
<p>检查Optional值是否存在如果存在则直接返回该值否则返回错误。</p>
<b>函数签名:</b>
```go
func (o Optional[T]) OrElseThrow(errorSupplier func() error) (T, error)
OrElseTrigger(errorHandler func() error) (T, error)
```
<b>示例:</b>
@@ -403,13 +393,13 @@ import (
)
func main() {
optEmpty := optional.Empty[int]()
_, err := optEmpty.OrElseThrow(func() error { return errors.New("no value") })
optDefault := optional.Default[int]()
_, err := optDefault.OrElseTrigger(func() error { return errors.New("no value") })
fmt.Println(err.Error())
optWithValue := optional.Of(42)
val, err := optWithValue.OrElseThrow(func() error { return errors.New("no value") })
val, err := optWithValue.OrElseTrigger(func() error { return errors.New("no value") })
fmt.Println(val)
fmt.Println(err)