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perf(slice): make a clearer panic description (#223)

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残念
2024-05-30 16:55:30 +08:00
committed by GitHub
parent 4b3a62b36a
commit ce2397422e
3 changed files with 15 additions and 24 deletions
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6
docs/api/packages/slice.md
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@@ -322,12 +322,12 @@ func main() {
### <span id="Concat">Concat</span> ### <span id="Concat">Concat</span>
<p>合并多个slices到slice中</p> <p>创建一个新的切片，将传入的切片拼接起来返回。</p>
<b>函数签名:</b> <b>函数签名:</b>
```go ```go
func Concat[T any](slice []T, slices ...[]T) []T func Concat[T any](slices ...[]T) []T
``` ```
<b>示例:<span style="float:right;display:inline-block;">[运行](https://go.dev/play/p/gPt-q7zr5mk)</span></b> <b>示例:<span style="float:right;display:inline-block;">[运行](https://go.dev/play/p/gPt-q7zr5mk)</span></b>
@@ -1542,7 +1542,7 @@ func main() {
} }
``` ```
### <span id="Merge">Merge</span> ### <span id="Merge">Merge（废弃：使用Concat）</span>
<p>合并多个切片（不会消除重复元素).</p> <p>合并多个切片（不会消除重复元素).</p>

6
docs/en/api/packages/slice.md
View File

@@ -321,12 +321,12 @@ func main() {
### <span id="Concat">Concat</span> ### <span id="Concat">Concat</span>
<p>Creates a new slice concatenating slice with any additional slices.</p> <p>Concat creates a new slice concatenating slice with any additional slices.</p>
<b>Signature:</b> <b>Signature:</b>
```go ```go
func Concat[T any](slice []T, slices ...[]T) []T func Concat[T any](slices ...[]T) []T
``` ```
<b>Example:<span style="float:right;display:inline-block;">[Run](https://go.dev/play/p/gPt-q7zr5mk)</span></b> <b>Example:<span style="float:right;display:inline-block;">[Run](https://go.dev/play/p/gPt-q7zr5mk)</span></b>
@@ -1540,7 +1540,7 @@ func main() {
} }
``` ```
### <span id="Merge">Merge</span> ### <span id="Merge">Merge(deprecated: use Concat)</span>
<p>Merge all given slices into one slice.</p> <p>Merge all given slices into one slice.</p>

27
slice/slice.go
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@@ -109,18 +109,18 @@ func Compact[T comparable](slice []T) []T {
// Concat creates a new slice concatenating slice with any additional slices. // Concat creates a new slice concatenating slice with any additional slices.
// Play: https://go.dev/play/p/gPt-q7zr5mk // Play: https://go.dev/play/p/gPt-q7zr5mk
func Concat[T any](slice []T, slices ...[]T) []T { func Concat[T any](slices ...[]T) []T {
totalLen := len(slice) totalLen := 0
for _, v := range slices { for _, v := range slices {
totalLen += len(v) totalLen += len(v)
if totalLen < 0 {
panic("len out of range")
}
} }
result := make([]T, 0, totalLen) result := make([]T, 0, totalLen)
result = append(result, slice...) for _, v := range slices {
for _, s := range slices { result = append(result, v...)
result = append(result, s...)
} }
return result return result
@@ -833,20 +833,11 @@ func UnionBy[T any, V comparable](predicate func(item T) V, slices ...[]T) []T {
return result return result
} }
// Deprecated: Please use Concat() function instead.
// Merge all given slices into one slice. // Merge all given slices into one slice.
// Play: https://go.dev/play/p/lbjFp784r9N // Play: https://go.dev/play/p/lbjFp784r9N
func Merge[T any](slices ...[]T) []T { func Merge[T any](slices ...[]T) []T {
totalLen := 0 return Concat(slices...)
for _, v := range slices {
totalLen += len(v)
}
result := make([]T, 0, totalLen)
for _, v := range slices {
result = append(result, v...)
}
return result
} }
// Intersection creates a slice of unique elements that included by all slices. // Intersection creates a slice of unique elements that included by all slices.