36 lines
932 B
Go
36 lines
932 B
Go
package slice
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func Splice[T any](a *[]T, offset, length int, replacement []T) []T {
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arr := *a
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l := len(arr)
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if length < 0 {
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panic("length must > 0")
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}
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if offset >= 0 {
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if offset+length > l {
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return nil
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} else if l > offset && l < offset+length {
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v := arr[offset:l]
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*a = append(arr[:offset], replacement...)
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return v
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} else if offset+length <= l {
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v := append([]T{}, arr[offset:offset+length]...)
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*a = append(arr[:offset], append(replacement, arr[offset+length:]...)...)
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return v
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}
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} else {
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if -offset > l {
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return nil
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} else if -offset <= l && l+offset+length < l {
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v := append([]T{}, arr[l+offset:l+offset+length]...)
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*a = append(arr[:l+offset], append(replacement, arr[l+offset+length:]...)...)
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return v
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} else if -offset <= l && l+offset+length >= l {
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v := append([]T{}, arr[l+offset:]...)
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*a = append(arr[:l+offset], replacement...)
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return v
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}
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}
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return nil
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}
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