mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-11-01 06:48:56 +00:00
477a1cc40e
- Move the file `compare.go` and `slice.go` to `slice.go`.
- Fix `ExistsInSlice`, it's buggy
- It uses `sort.Search`, so it assumes that the input slice is sorted.
- It passes `func(i int) bool { return slice[i] == target })` to
`sort.Search`, that's incorrect, check the doc of `sort.Search`.
- Conbine `IsInt64InSlice(int64, []int64)` and `ExistsInSlice(string,
[]string)` to `SliceContains[T]([]T, T)`.
- Conbine `IsSliceInt64Eq([]int64, []int64)` and `IsEqualSlice([]string,
[]string)` to `SliceSortedEqual[T]([]T, T)`.
- Add `SliceEqual[T]([]T, T)` as a distinction from
`SliceSortedEqual[T]([]T, T)`.
- Redesign `RemoveIDFromList([]int64, int64) ([]int64, bool)` to
`SliceRemoveAll[T]([]T, T) []T`.
- Add `SliceContainsFunc[T]([]T, func(T) bool)` and
`SliceRemoveAllFunc[T]([]T, func(T) bool)` for general use.
- Add comments to explain why not `golang.org/x/exp/slices`.
- Add unit tests.
90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
// Most of the functions in this file can have better implementations with "golang.org/x/exp/slices".
|
|
// However, "golang.org/x/exp" is experimental and unreliable, we shouldn't use it.
|
|
// So lets waiting for the "slices" has be promoted to the main repository one day.
|
|
|
|
package util
|
|
|
|
import "strings"
|
|
|
|
// SliceContains returns true if the target exists in the slice.
|
|
func SliceContains[T comparable](slice []T, target T) bool {
|
|
return SliceContainsFunc(slice, func(t T) bool { return t == target })
|
|
}
|
|
|
|
// SliceContainsFunc returns true if any element in the slice satisfies the targetFunc.
|
|
func SliceContainsFunc[T any](slice []T, targetFunc func(T) bool) bool {
|
|
for _, v := range slice {
|
|
if targetFunc(v) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// SliceContainsString sequential searches if string exists in slice.
|
|
func SliceContainsString(slice []string, target string, insensitive ...bool) bool {
|
|
if len(insensitive) != 0 && insensitive[0] {
|
|
target = strings.ToLower(target)
|
|
return SliceContainsFunc(slice, func(t string) bool { return strings.ToLower(t) == target })
|
|
}
|
|
|
|
return SliceContains(slice, target)
|
|
}
|
|
|
|
// SliceSortedEqual returns true if the two slices will be equal when they get sorted.
|
|
// It doesn't require that the slices have been sorted, and it doesn't sort them either.
|
|
func SliceSortedEqual[T comparable](s1, s2 []T) bool {
|
|
if len(s1) != len(s2) {
|
|
return false
|
|
}
|
|
|
|
counts := make(map[T]int, len(s1))
|
|
for _, v := range s1 {
|
|
counts[v]++
|
|
}
|
|
for _, v := range s2 {
|
|
counts[v]--
|
|
}
|
|
|
|
for _, v := range counts {
|
|
if v != 0 {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// SliceEqual returns true if the two slices are equal.
|
|
func SliceEqual[T comparable](s1, s2 []T) bool {
|
|
if len(s1) != len(s2) {
|
|
return false
|
|
}
|
|
|
|
for i, v := range s1 {
|
|
if s2[i] != v {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// SliceRemoveAll removes all the target elements from the slice.
|
|
func SliceRemoveAll[T comparable](slice []T, target T) []T {
|
|
return SliceRemoveAllFunc(slice, func(t T) bool { return t == target })
|
|
}
|
|
|
|
// SliceRemoveAllFunc removes all elements which satisfy the targetFunc from the slice.
|
|
func SliceRemoveAllFunc[T comparable](slice []T, targetFunc func(T) bool) []T {
|
|
idx := 0
|
|
for _, v := range slice {
|
|
if targetFunc(v) {
|
|
continue
|
|
}
|
|
slice[idx] = v
|
|
idx++
|
|
}
|
|
return slice[:idx]
|
|
}
|