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package slice
// Zoom 将切片的长度缩放到指定的大小，如果 newSize 小于 slice 的长度，则会截断 slice，如果 newSize 大于 slice 的长度，则会在 slice 的末尾添加零值数据
func Zoom[V any](newSize int, slice []V) []V {
if newSize < 0 {
newSize = 0
}
var s = make([]V, newSize)
copy(s, slice)
return s