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