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

@@ -10,8 +10,8 @@ type Optional[T any] struct {
mu *sync.RWMutex
}
// Empty returns an empty Optional instance.
func Empty[T any]() Optional[T] {
// Default returns an default Optional instance.
func Default[T any]() Optional[T] {
return Optional[T]{mu: &sync.RWMutex{}}
}
@@ -20,29 +20,29 @@ func Of[T any](value T) Optional[T] {
return Optional[T]{value: &value, mu: &sync.RWMutex{}}
}
// OfNullable returns an Optional for a given value, which may be nil.
func OfNullable[T any](value *T) Optional[T] {
// FromNillable returns an Optional for a given value, which may be nil.
func FromNillable[T any](value *T) Optional[T] {
if value == nil {
return Empty[T]()
return Default[T]()
}
return Optional[T]{value: value, mu: &sync.RWMutex{}}
}
// IsPresent checks if there is a value present.
func (o Optional[T]) IsPresent() bool {
// IsNotNil checks if there is a value present.
func (o Optional[T]) IsNotNil() bool {
o.mu.RLock()
defer o.mu.RUnlock()
return o.value != nil
}
// IsEmpty checks if the Optional is empty.
func (o Optional[T]) IsEmpty() bool {
return !o.IsPresent()
// IsNil checks if the Optional is nil.
func (o Optional[T]) IsNil() bool {
return !o.IsNotNil()
}
// IfPresent performs the given action with the value if a value is present.
func (o Optional[T]) IfPresent(action func(value T)) {
// IfNotNil performs the given action with the value if a value is not nil.
func (o Optional[T]) IfNotNil(action func(value T)) {
o.mu.RLock()
defer o.mu.RUnlock()
@@ -51,20 +51,20 @@ func (o Optional[T]) IfPresent(action func(value T)) {
}
}
// IfPresentOrElse performs the action with the value if present, otherwise performs the empty-based action.
func (o Optional[T]) IfPresentOrElse(action func(value T), emptyAction func()) {
// IfNotNilOrElse performs the action with the value if present, otherwise performs the fallback action.
func (o Optional[T]) IfNotNilOrElse(action func(value T), fallbackAction func()) {
o.mu.RLock()
defer o.mu.RUnlock()
if o.value != nil {
action(*o.value)
} else {
emptyAction()
fallbackAction()
}
}
// Get returns the value if present, otherwise panics.
func (o Optional[T]) Get() T {
// Unwarp returns the value if not nil, otherwise panics.
func (o Optional[T]) Unwarp() T {
o.mu.RLock()
defer o.mu.RUnlock()
@@ -74,7 +74,7 @@ func (o Optional[T]) Get() T {
return *o.value
}
// OrElse returns the value if present, otherwise returns other.
// OrElse returns the value if is not nil, otherwise returns other.
func (o Optional[T]) OrElse(other T) T {
o.mu.RLock()
defer o.mu.RUnlock()
@@ -85,24 +85,24 @@ func (o Optional[T]) OrElse(other T) T {
return other
}
// OrElseGet returns the value if present, otherwise invokes supplier and returns the result.
func (o Optional[T]) OrElseGet(supplier func() T) T {
// OrElseGet returns the value if is not nil, otherwise invokes action and returns the result.
func (o Optional[T]) OrElseGet(action func() T) T {
o.mu.RLock()
defer o.mu.RUnlock()
if o.value != nil {
return *o.value
}
return supplier()
return action()
}
// OrElseThrow returns the value if present, otherwise returns an error.
func (o Optional[T]) OrElseThrow(errorSupplier func() error) (T, error) {
// OrElseTrigger returns the value if present, otherwise returns an error.
func (o Optional[T]) OrElseTrigger(errorHandler func() error) (T, error) {
o.mu.RLock()
defer o.mu.RUnlock()
if o.value == nil {
return *new(T), errorSupplier()
return *new(T), errorHandler()
}
return *o.value, nil
}

View File

@@ -7,11 +7,11 @@ import (
"github.com/duke-git/lancet/v2/internal"
)
func TestEmpty(t *testing.T) {
func TestDefault(t *testing.T) {
assert := internal.NewAssert(t, "TestEmpty")
opt := Empty[int]()
opt := Default[int]()
assert.ShouldBeTrue(opt.IsEmpty())
assert.ShouldBeTrue(opt.IsNil())
}
func TestOf(t *testing.T) {
@@ -19,30 +19,30 @@ func TestOf(t *testing.T) {
value := 42
opt := Of(value)
assert.ShouldBeTrue(opt.IsPresent())
assert.Equal(opt.Get(), value)
assert.ShouldBeTrue(opt.IsNotNil())
assert.Equal(opt.Unwarp(), value)
}
func TestOfNullable(t *testing.T) {
func TestFromNillable(t *testing.T) {
assert := internal.NewAssert(t, "TestOfNullable")
var value *int = nil
opt := OfNullable(value)
opt := FromNillable(value)
assert.ShouldBeFalse(opt.IsPresent())
assert.ShouldBeFalse(opt.IsNotNil())
value = new(int)
*value = 42
opt = OfNullable(value)
opt = FromNillable(value)
assert.ShouldBeTrue(opt.IsPresent())
assert.ShouldBeTrue(opt.IsNotNil())
}
func TestOrElse(t *testing.T) {
assert := internal.NewAssert(t, "TestOrElse")
optEmpty := Empty[int]()
optDefault := Default[int]()
defaultValue := 100
val := optEmpty.OrElse(defaultValue)
val := optDefault.OrElse(defaultValue)
assert.Equal(val, defaultValue)
optWithValue := Of(42)
@@ -53,72 +53,72 @@ func TestOrElse(t *testing.T) {
func TestOrElseGetHappyPath(t *testing.T) {
assert := internal.NewAssert(t, "TestOrElseGetHappyPath")
optWithValue := Of(42)
supplier := func() int { return 100 }
action := func() int { return 100 }
val := optWithValue.OrElseGet(supplier)
val := optWithValue.OrElseGet(action)
assert.Equal(val, 42)
}
func TestOrElseGet(t *testing.T) {
assert := internal.NewAssert(t, "TestOrElseGet")
optEmpty := Empty[int]()
supplier := func() int { return 100 }
optDefault := Default[int]()
action := func() int { return 100 }
val := optEmpty.OrElseGet(supplier)
assert.Equal(val, supplier())
val := optDefault.OrElseGet(action)
assert.Equal(val, action())
}
func TestOrElseThrow(t *testing.T) {
assert := internal.NewAssert(t, "TestOrElseThrow")
optEmpty := Empty[int]()
_, err := optEmpty.OrElseThrow(func() error { return errors.New("no value") })
func TestOrElseTrigger(t *testing.T) {
assert := internal.NewAssert(t, "OrElseTrigger")
optDefault := Default[int]()
_, err := optDefault.OrElseTrigger(func() error { return errors.New("no value") })
assert.Equal(err.Error(), "no value")
optWithValue := Of(42)
val, err := optWithValue.OrElseThrow(func() error { return errors.New("no value") })
val, err := optWithValue.OrElseTrigger(func() error { return errors.New("no value") })
assert.IsNil(err)
assert.Equal(val, 42)
}
func TestIfPresent(t *testing.T) {
assert := internal.NewAssert(t, "TestIfPresent")
func TestIfNotNil(t *testing.T) {
assert := internal.NewAssert(t, "IfNotNil")
called := false
action := func(value int) { called = true }
optEmpty := Empty[int]()
optEmpty.IfPresent(action)
optDefault := Default[int]()
optDefault.IfNotNil(action)
assert.ShouldBeFalse(called)
called = false // Reset for next test
optWithValue := Of(42)
optWithValue.IfPresent(action)
optWithValue.IfNotNil(action)
assert.ShouldBeTrue(called)
}
func TestIfPresentOrElse(t *testing.T) {
assert := internal.NewAssert(t, "TestIfPresentOrElse")
func TestIfNotNilOrElse(t *testing.T) {
assert := internal.NewAssert(t, "TestIfNotNilOrElse")
// Test when value is present
calledWithValue := false
valueAction := func(value int) { calledWithValue = true }
emptyAction := func() { t.Errorf("Empty action should not be called when value is present") }
fallbackAction := func() { t.Errorf("Empty action should not be called when value is present") }
optWithValue := Of(42)
optWithValue.IfPresentOrElse(valueAction, emptyAction)
optWithValue.IfNotNilOrElse(valueAction, fallbackAction)
assert.ShouldBeTrue(calledWithValue)
// Test when value is not present
calledWithEmpty := false
valueAction = func(value int) { t.Errorf("Value action should not be called when value is not present") }
emptyAction = func() { calledWithEmpty = true }
fallbackAction = func() { calledWithEmpty = true }
optEmpty := Empty[int]()
optEmpty.IfPresentOrElse(valueAction, emptyAction)
optDefault := Default[int]()
optDefault.IfNotNilOrElse(valueAction, fallbackAction)
assert.ShouldBeTrue(calledWithEmpty)
}
@@ -133,19 +133,19 @@ func TestGetWithPanicStandard(t *testing.T) {
r := recover()
assert.IsNil(r)
}()
val := optWithValue.Get()
val := optWithValue.Unwarp()
if val != 42 {
t.Errorf("Expected Get to return 42, got %v", val)
t.Errorf("Expected Unwarp to return 42, got %v", val)
}
}()
// Test when value is not present
optEmpty := Empty[int]()
optDefault := Default[int]()
func() {
defer func() {
r := recover()
assert.IsNotNil(r)
}()
_ = optEmpty.Get()
_ = optDefault.Unwarp()
}()
}

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)

View File

@@ -22,16 +22,16 @@ import (
## Index
- [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)
@@ -68,13 +68,13 @@ func main() {
}
```
### <span id="OfNullable">OfNullable</span>
### <span id="FromNillable">FromNillable</span>
<p>Returns an Optional for a given value, which may be nil.</p>
<b>Signature:</b>
```go
func OfNullable[T any](value *T) Optional[T]
func FromNillable[T any](value *T) Optional[T]
```
<b>Example:</b>
@@ -88,15 +88,15 @@ 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:
@@ -106,13 +106,13 @@ func main() {
```
### <span id="Empty">Empty</span>
<p>Returns an empty Optional instance.</p>
### <span id="Default">Default</span>
<p>Returns an default Optional instance.</p>
<b>Signature:</b>
```go
func Empty[T any]() Optional[T]
func Default[T any]() Optional[T]
```
<b>Example:</b>
@@ -125,8 +125,8 @@ import (
)
func main() {
optEmpty := OfNullable.Empty[int]()
fmt.Println(optEmpty.IsEmpty())
optDefault := optional.Default[int]()
fmt.Println(optDefault.IsNil())
// Output:
// true
@@ -134,13 +134,13 @@ func main() {
```
### <span id="IsEmpty">IsEmpty</span>
<p>Checks if the Optional is empty.</p>
### <span id="IsNil">IsNil</span>
<p>Checks if the Optional is nil.</p>
<b>Signature:</b>
```go
func (o Optional[T]) IsEmpty() bool
func (o Optional[T]) IsNil() bool
```
<b>Example:</b>
@@ -153,8 +153,8 @@ import (
)
func main() {
optEmpty := OfNullable.Empty[int]()
fmt.Println(optEmpty.IsEmpty())
optDefault := optional.Default[int]()
fmt.Println(optDefault.IsNil())
// Output:
// true
@@ -162,13 +162,13 @@ func main() {
```
### <span id="IsPresent">IsPresent</span>
<p>Checks if there is a value present.</p>
### <span id="IsNotNil">IsNotNil</span>
<p>Checks if there is a value not nil.</p>
<b>Signature:</b>
```go
func (o Optional[T]) IsPresent() bool
func (o Optional[T]) IsNotNil() bool
```
<b>Example:</b>
@@ -182,15 +182,15 @@ 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:
@@ -200,13 +200,13 @@ func main() {
```
### <span id="IfPresent">IfPresent</span>
### <span id="IfNotNil">IfNotNil</span>
<p>Performs the given action with the value if a value is present.</p>
<b>Signature:</b>
```go
func (o Optional[T]) IfPresent(action func(value T))
func (o Optional[T]) IfNotNil(action func(value T))
```
<b>Example:</b>
@@ -222,16 +222,16 @@ 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
@@ -240,13 +240,13 @@ func main() {
```
### <span id="IfPresentOrElse">IfPresentOrElse</span>
<p>Performs the action with the value if present, otherwise performs the empty-based action.</p>
### <span id="IfNotNilOrElse">IfNotNilOrElse</span>
<p>Performs the action with the value if not nil, otherwise performs the fallback action.</p>
<b>Signature:</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>Example:</b>
@@ -264,7 +264,7 @@ 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)
@@ -272,8 +272,8 @@ 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)
@@ -283,13 +283,13 @@ func main() {
}
```
### <span id="Get">Get</span>
<p>Returns the value if present, otherwise panics.</p>
### <span id="Unwrap">Unwrap</span>
<p>Returns the value if not nil, otherwise panics.</p>
<b>Signature:</b>
```go
func (o Optional[T]) Get() T
func (o Optional[T]) Unwrap() T
```
<b>Example:</b>
@@ -305,7 +305,7 @@ func main() {
value := 42
opt := optional.Of(value)
fmt.Println(opt.Get())
fmt.Println(opt.Unwrap())
// Output:
// 42
@@ -314,7 +314,7 @@ func main() {
### <span id="OrElse">OrElse</span>
<p>Returns the value if present, otherwise returns other.</p>
<p>Returns the value if not nill, otherwise returns other.</p>
<b>Signature:</b>
@@ -332,8 +332,8 @@ import (
)
func main() {
optEmpty := optional.Empty[int]()
val := optEmpty.OrElse(100)
optDefault := optional.Default[int]()
val := optDefault.OrElse(100)
fmt.Println(val)
optWithValue := optional.Of(42)
@@ -348,12 +348,12 @@ func main() {
### <span id="OrElseGet">OrElseGet</span>
<p>Returns the value if present, otherwise invokes supplier and returns the result.</p>
<p>Returns the value if not nil, otherwise invokes action and returns the result.</p>
<b>Signature:</b>
```go
func (o Optional[T]) OrElseGet(supplier func() T) T
func (o Optional[T]) OrElseGet(action func() T) T
```
<b>Example:</b>
@@ -366,10 +366,10 @@ 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:
@@ -378,13 +378,13 @@ func main() {
```
### <span id="OrElseThrow">OrElseThrow</span>
### <span id="OrElseTrigger">OrElseTrigger</span>
<p>Returns the value if present, otherwise returns an error.</p>
<b>Signature:</b>
```go
func (o Optional[T]) OrElseThrow(errorSupplier func() error) (T, error)
OrElseTrigger(errorHandler func() error) (T, error)
```
<b>Example:</b>
@@ -397,13 +397,13 @@ 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)