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doc: update doc for website
This commit is contained in:
dudaodong
942
docs/en/api/packages/stream.md
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942
docs/en/api/packages/stream.md
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@@ -0,0 +1,942 @@
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# Stream
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Package stream implements a sequence of elements supporting sequential and operations. This package is an experiment to explore if stream in go can work as the way java does. it's feature is very limited.
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<div STYLE="page-break-after: always;"></div>
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## Source:
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- [https://github.com/duke-git/lancet/blob/main/stream/stream.go](https://github.com/duke-git/lancet/blob/main/stream/stream.go)
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<div STYLE="page-break-after: always;"></div>
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## Usage:
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```go
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import (
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"github.com/duke-git/lancet/v2/stream"
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)
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```
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<div STYLE="page-break-after: always;"></div>
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## Index
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- [Of](#Of)
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- [FromSlice](#FromSlice)
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- [FromChannel](#FromChannel)
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- [FromRange](#FromRange)
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- [Generate](#Generate)
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- [Concat](#Concat)
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- [Distinct](#Distinct)
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- [Filter](#Filter)
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- [Map](#Map)
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- [Peek](#Peek)
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- [Skip](#Skip)
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- [Limit](#Limit)
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- [Reverse](#Reverse)
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- [Range](#Range)
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- [Sorted](#Sorted)
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- [ForEach](#ForEach)
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- [Reduce](#Reduce)
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- [FindFirst](#FindFirst)
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- [FindLast](#FindLast)
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- [Max](#Max)
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- [Min](#Min)
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- [AllMatch](#AllMatch)
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- [AnyMatch](#AnyMatch)
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- [NoneMatch](#NoneMatch)
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- [Count](#Count)
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- [ToSlice](#ToSlice)
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<div STYLE="page-break-after: always;"></div>
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<link rel="stylesheet" type="text/css" href="/styles/api_doc.css">
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## Documentation
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### <span id="Of">Of</span>
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<p>Creates a stream whose elements are the specified values.</p>
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<b>Signature:</b>
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```go
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func Of[T any](elems ...T) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/jI6_iZZuVFE)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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s := stream.Of(1, 2, 3)
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data := s.ToSlice()
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fmt.Println(data)
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// Output:
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// [1 2 3]
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}
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```
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### <span id="FromSlice">FromSlice</span>
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<p>Creates a stream from slice.</p>
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<b>Signature:</b>
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```go
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func FromSlice[T any](source []T) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/wywTO0XZtI4)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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s := stream.FromSlice([]int{1, 2, 3})
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data := s.ToSlice()
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fmt.Println(data)
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// Output:
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// [1 2 3]
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}
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```
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### <span id="FromChannel">FromChannel</span>
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<p>Creates a stream from channel.</p>
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<b>Signature:</b>
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```go
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func FromChannel[T any](source <-chan T) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/9TZYugGMhXZ)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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ch := make(chan int)
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go func() {
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for i := 1; i < 4; i++ {
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ch <- i
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}
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close(ch)
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}()
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s := stream.FromChannel(ch)
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data := s.ToSlice()
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fmt.Println(data)
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// Output:
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// [1 2 3]
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}
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```
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### <span id="FromRange">FromRange</span>
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<p>Creates a number stream from start to end. both start and end are included. [start, end]</p>
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<b>Signature:</b>
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```go
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func FromRange[T constraints.Integer | constraints.Float](start, end, step T) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/9Ex1-zcg-B-)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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s := stream.FromRange(1, 5, 1)
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data := s.ToSlice()
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fmt.Println(data)
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// Output:
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// [1 2 3 4 5]
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}
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```
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### <span id="Generate">Generate</span>
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<p>Creates a stream where each element is generated by the provided generater function.</p>
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<b>Signature:</b>
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```go
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func Generate[T any](generator func() func() (item T, ok bool)) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/rkOWL1yA3j9)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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n := 0
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max := 4
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generator := func() func() (int, bool) {
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return func() (int, bool) {
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n++
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return n, n < max
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}
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}
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s := stream.Generate(generator)
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data := s.ToSlice()
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fmt.Println(data)
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// Output:
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// [1 2 3]
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}
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```
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### <span id="Concat">Concat</span>
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<p>Creates a lazily concatenated stream whose elements are all the elements of the first stream followed by all the elements of the second stream.</p>
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<b>Signature:</b>
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```go
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func Concat[T any](a, b stream[T]) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/HM4OlYk_OUC)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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s1 := stream.FromSlice([]int{1, 2, 3})
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s2 := stream.FromSlice([]int{4, 5, 6})
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s := Concat(s1, s2)
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data := s.ToSlice()
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fmt.Println(data)
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// Output:
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// [1 2 3 4 5 6]
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}
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```
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### <span id="Distinct">Distinct</span>
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<p>Creates returns a stream that removes the duplicated items. <b>Support chainable operation</b></p>
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<b>Signature:</b>
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```go
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func (s stream[T]) Distinct() stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/eGkOSrm64cB)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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original := stream.FromSlice([]int{1, 2, 2, 3, 3, 3})
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distinct := original.Distinct()
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data1 := original.ToSlice()
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data2 := distinct.ToSlice()
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fmt.Println(data1)
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fmt.Println(data2)
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// Output:
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// [1 2 2 3 3 3]
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// [1 2 3]
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}
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```
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### <span id="Filter">Filter</span>
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<p>Returns a stream consisting of the elements of this stream that match the given predicate. <b>Support chainable operation</b></p>
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<b>Signature:</b>
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```go
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func (s stream[T]) Filter(predicate func(item T) bool) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/MFlSANo-buc)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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original := stream.FromSlice([]int{1, 2, 3, 4, 5})
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isEven := func(n int) bool {
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return n%2 == 0
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}
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even := original.Filter(isEven)
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fmt.Println(even.ToSlice())
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// Output:
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// [2 4]
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}
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```
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### <span id="Map">Map</span>
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<p>Returns a stream consisting of the elements of this stream that apply the given function to elements of stream. <b>Support chainable operation</b></p>
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<b>Signature:</b>
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```go
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func (s stream[T]) Map(mapper func(item T) T) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/OtNQUImdYko)</span></b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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original := stream.FromSlice([]int{1, 2, 3})
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addOne := func(n int) int {
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return n + 1
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}
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increament := original.Map(addOne)
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fmt.Println(increament.ToSlice())
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// Output:
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// [2 3 4]
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}
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```
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### <span id="Peek">Peek</span>
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<p>Returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as elements are consumed from the resulting stream. <b>Support chainable operation</b></p>
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<b>Signature:</b>
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```go
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func (s stream[T]) Peek(consumer func(item T)) stream[T]
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```
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/u1VNzHs6cb2)</span></b>
|
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|
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/stream"
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)
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func main() {
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original := stream.FromSlice([]int{1, 2, 3})
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data := []string{}
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peekStream := original.Peek(func(n int) {
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data = append(data, fmt.Sprint("value", n))
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})
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fmt.Println(original.ToSlice())
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fmt.Println(peekStream.ToSlice())
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fmt.Println(data)
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// Output:
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// [1 2 3]
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// [1 2 3]
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// [value1 value2 value3]
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}
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```
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### <span id="Skip">Skip</span>
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<p>Returns a stream consisting of the remaining elements of this stream after discarding the first n elements of the stream. If this stream contains fewer than n elements then an empty stream will be returned. <b>Support chainable operation</b></p>
|
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<b>Signature:</b>
|
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|
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```go
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func (s stream[T]) Skip(n int) stream[T]
|
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```
|
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|
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<b>Example:<span class="run-container">[Run](https://go.dev/play/p/fNdHbqjahum)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
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)
|
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|
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func main() {
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original := stream.FromSlice([]int{1, 2, 3, 4})
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s1 := original.Skip(-1)
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s2 := original.Skip(0)
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s3 := original.Skip(1)
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s4 := original.Skip(5)
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fmt.Println(s1.ToSlice())
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fmt.Println(s2.ToSlice())
|
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fmt.Println(s3.ToSlice())
|
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fmt.Println(s4.ToSlice())
|
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|
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// Output:
|
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// [1 2 3 4]
|
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// [1 2 3 4]
|
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// [2 3 4]
|
||||
// []
|
||||
}
|
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```
|
||||
|
||||
### <span id="Limit">Limit</span>
|
||||
|
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<p>Returns a stream consisting of the elements of this stream, truncated to be no longer than maxSize in length. <b>Support chainable operation</b></p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Limit(maxSize int) stream[T]
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/qsO4aniDcGf)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
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original := stream.FromSlice([]int{1, 2, 3, 4})
|
||||
|
||||
s1 := original.Limit(-1)
|
||||
s2 := original.Limit(0)
|
||||
s3 := original.Limit(1)
|
||||
s4 := original.Limit(5)
|
||||
|
||||
fmt.Println(s1.ToSlice())
|
||||
fmt.Println(s2.ToSlice())
|
||||
fmt.Println(s3.ToSlice())
|
||||
fmt.Println(s4.ToSlice())
|
||||
|
||||
// Output:
|
||||
// []
|
||||
// []
|
||||
// [1]
|
||||
// [1 2 3 4]
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Reverse">Reverse</span>
|
||||
|
||||
<p>Returns a stream whose elements are reverse order of given stream. <b>Support chainable operation</b></p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Reverse() stream[T]
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/A8_zkJnLHm4)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
reverse := original.Reverse()
|
||||
|
||||
fmt.Println(reverse.ToSlice())
|
||||
|
||||
// Output:
|
||||
// [3 2 1]
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Range">Range</span>
|
||||
|
||||
<p>Returns a stream whose elements are in the range from start(included) to end(excluded) original stream.<b>Support chainable operation</b></p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Range(start, end int) stream[T]
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/indZY5V2f4j)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
s1 := original.Range(0, 0)
|
||||
s2 := original.Range(0, 1)
|
||||
s3 := original.Range(0, 3)
|
||||
s4 := original.Range(1, 2)
|
||||
|
||||
fmt.Println(s1.ToSlice())
|
||||
fmt.Println(s2.ToSlice())
|
||||
fmt.Println(s3.ToSlice())
|
||||
fmt.Println(s4.ToSlice())
|
||||
|
||||
// Output:
|
||||
// []
|
||||
// [1]
|
||||
// [1 2 3]
|
||||
// [2]
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Sorted">Sorted</span>
|
||||
|
||||
<p>Returns a stream consisting of the elements of this stream, sorted according to the provided less function.<b>Support chainable operation</b></p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Sorted(less func(a, b T) bool) stream[T]
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/XXtng5uonFj)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{4, 2, 1, 3})
|
||||
|
||||
sorted := original.Sorted(func(a, b int) bool { return a < b })
|
||||
|
||||
fmt.Println(original.ToSlice())
|
||||
fmt.Println(sorted.ToSlice())
|
||||
|
||||
// Output:
|
||||
// [4 2 1 3]
|
||||
// [1 2 3 4]
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="ForEach">ForEach</span>
|
||||
|
||||
<p>Performs an action for each element of this stream.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) ForEach(action func(item T))
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/Dsm0fPqcidk)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
result := 0
|
||||
original.ForEach(func(item int) {
|
||||
result += item
|
||||
})
|
||||
|
||||
fmt.Println(result)
|
||||
|
||||
// Output:
|
||||
// 6
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Reduce">Reduce</span>
|
||||
|
||||
<p>Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an Optional describing the reduced value, if any.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Reduce(initial T, accumulator func(a, b T) T) T
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/6uzZjq_DJLU)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
result := original.Reduce(0, func(a, b int) int {
|
||||
return a + b
|
||||
})
|
||||
|
||||
fmt.Println(result)
|
||||
|
||||
// Output:
|
||||
// 6
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="FindFirst">FindFirst</span>
|
||||
|
||||
<p>Returns the first element of this stream and true, or zero value and false if the stream is empty.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) FindFirst() (T, bool)
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/9xEf0-6C1e3)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
result, ok := original.FindFirst()
|
||||
|
||||
fmt.Println(result)
|
||||
fmt.Println(ok)
|
||||
|
||||
// Output:
|
||||
// 1
|
||||
// true
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="FindLast">FindLast</span>
|
||||
|
||||
<p>Returns the last element of this stream and true, or zero value and false if the stream is empty.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) FindLast() (T, bool)
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/WZD2rDAW-2h)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{3, 2, 1})
|
||||
|
||||
result, ok := original.FindLast()
|
||||
|
||||
fmt.Println(result)
|
||||
fmt.Println(ok)
|
||||
|
||||
// Output:
|
||||
// 1
|
||||
// true
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Max">Max</span>
|
||||
|
||||
<p>Returns the maximum element of this stream according to the provided less function. less fuction: a > b</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Max(less func(a, b T) bool) (T, bool)
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/fm-1KOPtGzn)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{4, 2, 1, 3})
|
||||
|
||||
max, ok := original.Max(func(a, b int) bool { return a > b })
|
||||
|
||||
fmt.Println(max)
|
||||
fmt.Println(ok)
|
||||
|
||||
// Output:
|
||||
// 4
|
||||
// true
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Min">Min</span>
|
||||
|
||||
<p>Returns the minimum element of this stream according to the provided less function. less fuction: a < b</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Min(less func(a, b T) bool) (T, bool)
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/vZfIDgGNRe_0)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{4, 2, 1, 3})
|
||||
|
||||
min, ok := original.Min(func(a, b int) bool { return a < b })
|
||||
|
||||
fmt.Println(min)
|
||||
fmt.Println(ok)
|
||||
|
||||
// Output:
|
||||
// 1
|
||||
// true
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="AllMatch">AllMatch</span>
|
||||
|
||||
<p>Returns whether all elements of this stream match the provided predicate.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) AllMatch(predicate func(item T) bool) bool
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/V5TBpVRs-Cx)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
result1 := original.AllMatch(func(item int) bool {
|
||||
return item > 0
|
||||
})
|
||||
|
||||
result2 := original.AllMatch(func(item int) bool {
|
||||
return item > 1
|
||||
})
|
||||
|
||||
fmt.Println(result1)
|
||||
fmt.Println(result2)
|
||||
|
||||
// Output:
|
||||
// true
|
||||
// false
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="AnyMatch">AnyMatch</span>
|
||||
|
||||
<p>Returns whether any elements of this stream match the provided predicate.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) AnyMatch(predicate func(item T) bool) bool
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/PTCnWn4OxSn)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
result1 := original.AnyMatch(func(item int) bool {
|
||||
return item > 1
|
||||
})
|
||||
|
||||
result2 := original.AnyMatch(func(item int) bool {
|
||||
return item > 3
|
||||
})
|
||||
|
||||
fmt.Println(result1)
|
||||
fmt.Println(result2)
|
||||
|
||||
// Output:
|
||||
// true
|
||||
// false
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="NoneMatch">NoneMatch</span>
|
||||
|
||||
<p>Returns whether no elements of this stream match the provided predicate.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) NoneMatch(predicate func(item T) bool) bool
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/iWS64pL1oo3)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
original := stream.FromSlice([]int{1, 2, 3})
|
||||
|
||||
result1 := original.NoneMatch(func(item int) bool {
|
||||
return item > 3
|
||||
})
|
||||
|
||||
result2 := original.NoneMatch(func(item int) bool {
|
||||
return item > 1
|
||||
})
|
||||
|
||||
fmt.Println(result1)
|
||||
fmt.Println(result2)
|
||||
|
||||
// Output:
|
||||
// true
|
||||
// false
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Count">Count</span>
|
||||
|
||||
<p>Returns the count of elements in the stream.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) Count() int
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/r3koY6y_Xo-)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
s1 := stream.FromSlice([]int{1, 2, 3})
|
||||
s2 := stream.FromSlice([]int{})
|
||||
|
||||
fmt.Println(s1.Count())
|
||||
fmt.Println(s2.Count())
|
||||
|
||||
// Output:
|
||||
// 3
|
||||
// 0
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="ToSlice">ToSlice</span>
|
||||
|
||||
<p>Returns the elements in the stream.</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s stream[T]) ToSlice() []T
|
||||
```
|
||||
|
||||
<b>Example:<span class="run-container">[Run](https://go.dev/play/p/jI6_iZZuVFE)</span></b>
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/stream"
|
||||
)
|
||||
|
||||
func main() {
|
||||
s := stream.Of(1, 2, 3)
|
||||
|
||||
data := s.ToSlice()
|
||||
|
||||
fmt.Println(data)
|
||||
|
||||
// Output:
|
||||
// [1 2 3]
|
||||
}
|
||||
```
|
||||
535
docs/en/api/packages/struct.md
Normal file
535
docs/en/api/packages/struct.md
Normal file
@@ -0,0 +1,535 @@
|
||||
# Structs
|
||||
|
||||
Struct is abstract struct for provide several high level functions
|
||||
|
||||
<div STYLE="page-break-after: always;"></div>
|
||||
|
||||
## Source:
|
||||
|
||||
- [https://github.com/duke-git/lancet/blob/main/structs/struct.go](https://github.com/duke-git/lancet/blob/main/structs/struct.go)
|
||||
|
||||
- [https://github.com/duke-git/lancet/blob/main/structs/field.go](https://github.com/duke-git/lancet/blob/main/structs/field.go)
|
||||
|
||||
<div STYLE="page-break-after: always;"></div>
|
||||
|
||||
## Usage:
|
||||
|
||||
```go
|
||||
import (
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
```
|
||||
|
||||
<div STYLE="page-break-after: always;"></div>
|
||||
|
||||
## Index:
|
||||
|
||||
- [New](#New)
|
||||
- [ToMap](#ToMap)
|
||||
- [Fields](#Fields)
|
||||
- [Field](#Field)
|
||||
- [IsStruct](#IsStruct)
|
||||
- [Tag](#Tag)
|
||||
- [Name](#Name)
|
||||
- [Value](#Value)
|
||||
- [Kind](#Kind)
|
||||
- [IsEmbedded](#IsEmbedded)
|
||||
- [IsExported](#IsExported)
|
||||
- [IsZero](#IsZero)
|
||||
- [IsSlice](#IsSlice)
|
||||
|
||||
<div STYLE="page-break-after: always;"></div>
|
||||
|
||||
## Documentation:
|
||||
|
||||
### <span id="New">New</span>
|
||||
|
||||
<p>The constructor function of the `Struct` </p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func New(value any, tagName ...string) *Struct
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type People struct {
|
||||
Name string `json:"name"`
|
||||
}
|
||||
p1 := &People{Name: "11"}
|
||||
s := structs.New(p1)
|
||||
// to do something
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="ToMap">ToMap</span>
|
||||
|
||||
<p>convert a valid struct to a map</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s *Struct) ToMap() (map[string]any, error)
|
||||
```
|
||||
|
||||
> In addition, provided a convenient static function ToMap
|
||||
|
||||
```go
|
||||
func ToMap(v any) (map[string]any, error)
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type People struct {
|
||||
Name string `json:"name"`
|
||||
}
|
||||
p1 := &People{Name: "11"}
|
||||
// use constructor function
|
||||
s1 := structs.New(p1)
|
||||
m1, _ := s1.ToMap()
|
||||
|
||||
fmt.Println(m1)
|
||||
|
||||
// use static function
|
||||
m2, _ := structs.ToMap(p1)
|
||||
|
||||
fmt.Println(m2)
|
||||
|
||||
// Output:
|
||||
// map[name:11]
|
||||
// map[name:11]
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Fields">Fields</span>
|
||||
|
||||
<p>Get all fields of a given struct, that the fields are abstract struct field</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s *Struct) Fields() []*Field
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type People struct {
|
||||
Name string `json:"name"`
|
||||
}
|
||||
p1 := &People{Name: "11"}
|
||||
s := structs.New(p1)
|
||||
fields := s.Fields()
|
||||
|
||||
fmt.Println(len(fields))
|
||||
|
||||
// Output:
|
||||
// 1
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Field">Field</span>
|
||||
|
||||
<p>Get an abstract field of a struct by given field name </p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s *Struct) Field(name string) *Field
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type People struct {
|
||||
Name string `json:"name"`
|
||||
}
|
||||
p1 := &People{Name: "11"}
|
||||
s := structs.New(p1)
|
||||
f := s.Field("Name")
|
||||
|
||||
fmt.Println(f.Value())
|
||||
|
||||
// Output:
|
||||
// 11
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="IsStruct">IsStruct</span>
|
||||
|
||||
<p>Check if the struct is valid</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (s *Struct) IsStruct() bool
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type People struct {
|
||||
Name string `json:"name"`
|
||||
}
|
||||
p1 := &People{Name: "11"}
|
||||
s := structs.New(p1)
|
||||
|
||||
fmt.Println(s.IsStruct())
|
||||
|
||||
// Output:
|
||||
// true
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Tag">Tag</span>
|
||||
|
||||
<p>Get a `Tag` of the `Field`, `Tag` is a abstract struct field tag</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) Tag() *Tag
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string `json:"name,omitempty"`
|
||||
}
|
||||
p1 := &Parent{"111"}
|
||||
|
||||
s := structs.New(p1)
|
||||
n, _ := s.Field("Name")
|
||||
tag := n.Tag()
|
||||
|
||||
fmt.Println(tag.Name)
|
||||
|
||||
// Output:
|
||||
// name
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Value">Value</span>
|
||||
|
||||
<p>Get the `Field` underlying value</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) Value() any
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string `json:"name,omitempty"`
|
||||
}
|
||||
p1 := &Parent{"111"}
|
||||
|
||||
s := structs.New(p1)
|
||||
n, _ := s.Field("Name")
|
||||
|
||||
fmt.Println(n.Value())
|
||||
|
||||
// Output:
|
||||
// 111
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="IsEmbedded">IsEmbedded</span>
|
||||
|
||||
<p>Check if the field is an embedded field</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) IsEmbedded() bool
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string
|
||||
}
|
||||
type Child struct {
|
||||
Parent
|
||||
Age int
|
||||
}
|
||||
c1 := &Child{}
|
||||
c1.Name = "111"
|
||||
c1.Age = 11
|
||||
|
||||
s := structs.New(c1)
|
||||
n, _ := s.Field("Name")
|
||||
a, _ := s.Field("Age")
|
||||
|
||||
fmt.Println(n.IsEmbedded())
|
||||
fmt.Println(a.IsEmbedded())
|
||||
|
||||
// Output:
|
||||
// true
|
||||
// false
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="IsExported">IsExported</span>
|
||||
|
||||
<p>Check if the field is exported</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) IsExported() bool
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string
|
||||
age int
|
||||
}
|
||||
p1 := &Parent{Name: "11", age: 11}
|
||||
s := structs.New(p1)
|
||||
n, _ := s.Field("Name")
|
||||
a, _ := s.Field("age")
|
||||
|
||||
fmt.Println(n.IsExported())
|
||||
fmt.Println(a.IsExported())
|
||||
|
||||
// Output:
|
||||
// true
|
||||
// false
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="IsZero">IsZero</span>
|
||||
|
||||
<p>Check if the field is zero value</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) IsZero() bool
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string
|
||||
Age int
|
||||
}
|
||||
p1 := &Parent{Age: 11}
|
||||
s := structs.New(p1)
|
||||
n, _ := s.Field("Name")
|
||||
a, _ := s.Field("Age")
|
||||
|
||||
fmt.Println(n.IsZero())
|
||||
fmt.Println(a.IsZero())
|
||||
|
||||
// Output:
|
||||
// true
|
||||
// false
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Name">Name</span>
|
||||
|
||||
<p>Get the field name</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) Name() string
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string
|
||||
Age int
|
||||
}
|
||||
p1 := &Parent{Age: 11}
|
||||
s := structs.New(p1)
|
||||
n, _ := s.Field("Name")
|
||||
a, _ := s.Field("Age")
|
||||
|
||||
fmt.Println(n.Name())
|
||||
fmt.Println(a.Name())
|
||||
|
||||
// Output:
|
||||
// Name
|
||||
// Age
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="Kind">Kind</span>
|
||||
|
||||
<p>Get the field's kind</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) Kind() reflect.Kind
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string
|
||||
Age int
|
||||
}
|
||||
p1 := &Parent{Age: 11}
|
||||
s := structs.New(p1)
|
||||
n, _ := s.Field("Name")
|
||||
a, _ := s.Field("Age")
|
||||
|
||||
fmt.Println(n.Kind())
|
||||
fmt.Println(a.Kind())
|
||||
|
||||
// Output:
|
||||
// string
|
||||
// int
|
||||
}
|
||||
```
|
||||
|
||||
### <span id="IsSlice">IsSlice</span>
|
||||
|
||||
<p>Check if the field is a slice</p>
|
||||
|
||||
<b>Signature:</b>
|
||||
|
||||
```go
|
||||
func (f *Field) IsSlice() bool
|
||||
```
|
||||
|
||||
<b>Example:</b>
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/duke-git/lancet/v2/structs"
|
||||
)
|
||||
|
||||
func main() {
|
||||
type Parent struct {
|
||||
Name string
|
||||
arr []int
|
||||
}
|
||||
|
||||
p1 := &Parent{arr: []int{1, 2, 3}}
|
||||
s := structs.New(p1)
|
||||
a, _ := s.Field("arr")
|
||||
|
||||
fmt.Println(a.IsSlice())
|
||||
|
||||
// Output:
|
||||
// true
|
||||
}
|
||||
```
|
||||
1427
docs/en/api/packages/strutil.md
Normal file
1427
docs/en/api/packages/strutil.md
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user