blob: 1fe6b8d89a3f94439a80ed2aa68456be4cba241b [file] [log] [blame]
// Copyright 2015 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
// Compare returns an integer comparing two strings lexicographically.
// The result will be 0 if a==b, -1 if a < b, and +1 if a > b.
// Compare is included only for symmetry with package bytes.
// It is usually clearer and always faster to use the built-in
// string comparison operators ==, <, >, and so on.
func Compare(a, b string) int {
// NOTE(rsc): This function does NOT call the runtime cmpstring function,
// because we do not want to provide any performance justification for
// using strings.Compare. Basically no one should use strings.Compare.
// As the comment above says, it is here only for symmetry with package bytes.
// If performance is important, the compiler should be changed to recognize
// the pattern so that all code doing three-way comparisons, not just code
// using strings.Compare, can benefit.
if a == b {
return 0
if a < b {
return -1
return +1