49 lines
970 B
Go
49 lines
970 B
Go
package slice
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// Del 删除特定索引的元素
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func Del[V any](slice *[]V, index int) {
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s := *slice
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if index < 0 {
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index = 0
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} else if index >= len(*slice) {
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index = len(*slice) - 1
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}
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*slice = append(s[:index], s[index+1:]...)
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}
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// Copy 复制特定切片
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func Copy[V any](slice []V) []V {
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var s = make([]V, len(slice), len(slice))
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for i := 0; i < len(slice); i++ {
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s[i] = slice[i]
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}
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return s
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}
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// Insert 在特定索引插入元素
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func Insert[V any](slice *[]V, index int, value V) {
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s := *slice
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if index <= 0 {
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*slice = append([]V{value}, s...)
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} else if index >= len(s) {
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*slice = append(s, value)
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} else {
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*slice = append(s[:index], append([]V{value}, s[index:]...)...)
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}
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}
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// Move 移动特定索引
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func Move[V any](slice *[]V, index, to int) {
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s := *slice
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v := s[index]
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if index == to {
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return
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} else if to < index {
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Del[V](slice, index)
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Insert(slice, to, v)
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} else {
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Insert(slice, to, v)
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Del[V](slice, index)
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}
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}
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