// // Copyright 2021 The Go Authors. All rights reserved.
// // Use of this source code is governed by a BSD-style
// // license that can be found in the LICENSE file.
// package strings
// import (
// "unsafe"
// )
// // Clone returns a fresh copy of s.
// // It guarantees to make a copy of s into a new allocation,
// // which can be important when retaining only a small substring
// // of a much larger string. Using Clone can help such programs
// // use less memory. Of course, since using Clone makes a copy,
// // overuse of Clone can make programs use more memory.
// // Clone should typically be used only rarely, and only when
// // profiling indicates that it is needed.
// // For strings of length zero the string "" will be returned
// // and no allocation is made.
// func Clone(s string) string {
// if len(s) == 0 {
// return ""
// }
// b := make([]byte, len(s))
// copy(b, s)
// return unsafe.String(&b[0], len(b))
// }