Skip to content

Commit

Permalink
feat: add IndexOf and LastIndexOf for stream
Browse files Browse the repository at this point in the history
  • Loading branch information
duke-git committed Nov 11, 2024
1 parent de877e5 commit f3579fc
Show file tree
Hide file tree
Showing 7 changed files with 263 additions and 62 deletions.
98 changes: 49 additions & 49 deletions cryptor/rsa_private_example.pem
Original file line number Diff line number Diff line change
@@ -1,51 +1,51 @@
-----BEGIN rsa private key-----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MIIJKQIBAAKCAgEA3bRSY5GD7uJB3jvwqa9ZZFpN3uLIGbbPA+yiyf6tJZp3K3rm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-----END rsa private key-----
24 changes: 12 additions & 12 deletions cryptor/rsa_public_example.pem
Original file line number Diff line number Diff line change
@@ -1,14 +1,14 @@
-----BEGIN rsa public key-----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MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA3bRSY5GD7uJB3jvwqa9Z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-----END rsa public key-----
70 changes: 69 additions & 1 deletion docs/api/packages/stream.md
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
# Stream

Stream 流,该包仅验证简单 stream 实现,功能有限。
Stream流,该包仅验证简单stream实现,功能有限。

<div STYLE="page-break-after: always;"></div>

Expand Down Expand Up @@ -48,6 +48,8 @@ import (
- [NoneMatch](#NoneMatch)
- [Count](#Count)
- [ToSlice](#ToSlice)
- [IndexOf](#IndexOf)
- [LastIndexOf](#LastIndexOf)

<div STYLE="page-break-after: always;"></div>

Expand Down Expand Up @@ -938,3 +940,69 @@ func main() {
// [1 2 3]
}
```

### <span id="IndexOf">IndexOf</span>

<p>返回在stream中找到值的第一个匹配项的索引,如果找不到值,则返回-1。</p>

<b>函数签名:</b>

```go
func (s Stream[T]) IndexOf(target T, equal func(a, b T) bool) int
```

<b>示例:<span style="float:right;display:inline-block;">[运行](todo)</span></b>

```go
import (
"fmt"
"github.com/duke-git/lancet/v2/stream"
)

func main() {
s := stream.FromSlice([]int{1, 2, 3, 2})

result1 := s.IndexOf(0, func(a, b int) bool { return a == b })
result2 := s.IndexOf(2, func(a, b int) bool { return a == b })

fmt.Println(result1)
fmt.Println(result2)

// Output:
// -1
// 1
}
```

### <span id="LastIndexOf">LastIndexOf</span>

<p>返回在stream中找到值的最后一个匹配项的索引,如果找不到值,则返回-1。</p>

<b>函数签名:</b>

```go
func (s Stream[T]) LastIndexOf(target T, equal func(a, b T) bool) int
```

<b>示例:<span style="float:right;display:inline-block;">[运行](todo)</span></b>

```go
import (
"fmt"
"github.com/duke-git/lancet/v2/stream"
)

func main() {
s := stream.FromSlice([]int{1, 2, 3, 2})

result1 := s.LastIndexOf(0, func(a, b int) bool { return a == b })
result2 := s.LastIndexOf(2, func(a, b int) bool { return a == b })

fmt.Println(result1)
fmt.Println(result2)

// Output:
// -1
// 3
}
```
66 changes: 66 additions & 0 deletions docs/en/api/packages/stream.md
Original file line number Diff line number Diff line change
Expand Up @@ -939,3 +939,69 @@ func main() {
// [1 2 3]
}
```

### <span id="IndexOf">IndexOf</span>

<p>Returns the index of the first occurrence of the specified element in this stream, or -1 if this stream does not contain the element.</p>

<b>Signature:</b>

```go
func (s Stream[T]) IndexOf(target T, equal func(a, b T) bool) int
```

<b>Example:<span style="float:right;display:inline-block;">[Run](todo)</span></b>

```go
import (
"fmt"
"github.com/duke-git/lancet/v2/stream"
)

func main() {
s := stream.FromSlice([]int{1, 2, 3, 2})

result1 := s.IndexOf(0, func(a, b int) bool { return a == b })
result2 := s.IndexOf(2, func(a, b int) bool { return a == b })

fmt.Println(result1)
fmt.Println(result2)

// Output:
// -1
// 1
}
```

### <span id="LastIndexOf">LastIndexOf</span>

<p>Returns the index of the last occurrence of the specified element in this stream, or -1 if this stream does not contain the element.</p>

<b>Signature:</b>

```go
func (s Stream[T]) LastIndexOf(target T, equal func(a, b T) bool) int
```

<b>Example:<span style="float:right;display:inline-block;">[Run](todo)</span></b>

```go
import (
"fmt"
"github.com/duke-git/lancet/v2/stream"
)

func main() {
s := stream.FromSlice([]int{1, 2, 3, 2})

result1 := s.LastIndexOf(0, func(a, b int) bool { return a == b })
result2 := s.LastIndexOf(2, func(a, b int) bool { return a == b })

fmt.Println(result1)
fmt.Println(result2)

// Output:
// -1
// 3
}
```
20 changes: 20 additions & 0 deletions stream/stream.go
Original file line number Diff line number Diff line change
Expand Up @@ -393,6 +393,26 @@ func (s Stream[T]) Min(less func(a, b T) bool) (T, bool) {
return min, true
}

// IndexOf returns the index of the first occurrence of the specified element in this stream, or -1 if this stream does not contain the element.
func (s Stream[T]) IndexOf(target T, equal func(a, b T) bool) int {
for i, v := range s.source {
if equal(v, target) {
return i
}
}
return -1
}

// LastIndexOf returns the index of the last occurrence of the specified element in this stream, or -1 if this stream does not contain the element.
func (s Stream[T]) LastIndexOf(target T, equal func(a, b T) bool) int {
for i := len(s.source) - 1; i >= 0; i-- {
if equal(s.source[i], target) {
return i
}
}
return -1
}

// ToSlice return the elements in the stream.
// Play: https://go.dev/play/p/jI6_iZZuVFE
func (s Stream[T]) ToSlice() []T {
Expand Down
28 changes: 28 additions & 0 deletions stream/stream_example_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -384,3 +384,31 @@ func ExampleStream_Count() {
// 3
// 0
}

func ExampleStream_IndexOf() {
s := FromSlice([]int{1, 2, 3, 2})

result1 := s.IndexOf(0, func(a, b int) bool { return a == b })
result2 := s.IndexOf(2, func(a, b int) bool { return a == b })

fmt.Println(result1)
fmt.Println(result2)

// Output:
// -1
// 1
}

func ExampleStream_LastIndexOf() {
s := FromSlice([]int{1, 2, 3, 2})

result1 := s.LastIndexOf(0, func(a, b int) bool { return a == b })
result2 := s.LastIndexOf(2, func(a, b int) bool { return a == b })

fmt.Println(result1)
fmt.Println(result2)

// Output:
// -1
// 3
}
19 changes: 19 additions & 0 deletions stream/stream_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -381,3 +381,22 @@ func TestStream_Min(t *testing.T) {
assert.Equal(1, max)
assert.Equal(true, ok)
}

func TestStream_IndexOf(t *testing.T) {
assert := internal.NewAssert(t, "TestStream_IndexOf")

s := FromSlice([]int{4, 2, 1, 3, 4})

assert.Equal(-1, s.IndexOf(0, func(a, b int) bool { return a == b }))
assert.Equal(0, s.IndexOf(4, func(a, b int) bool { return a == b }))
assert.Equal(3, s.IndexOf(3, func(a, b int) bool { return a == b }))
}

func TestStream_LastIndexOf(t *testing.T) {
assert := internal.NewAssert(t, "TestStream_LastIndexOf")

s := FromSlice([]int{4, 2, 1, 3, 2})

assert.Equal(-1, s.LastIndexOf(0, func(a, b int) bool { return a == b }))
assert.Equal(4, s.LastIndexOf(2, func(a, b int) bool { return a == b }))
}

0 comments on commit f3579fc

Please sign in to comment.