29 lines
1.1 KiB
Go
29 lines
1.1 KiB
Go
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package strings
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// Compare returns an integer comparing two strings lexicographically.
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// The result will be 0 if a == b, -1 if a < b, and +1 if a > b.
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//
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// Compare is included only for symmetry with package bytes.
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// It is usually clearer and always faster to use the built-in
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// string comparison operators ==, <, >, and so on.
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func Compare(a, b string) int {
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// NOTE(rsc): This function does NOT call the runtime cmpstring function,
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// because we do not want to provide any performance justification for
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// using strings.Compare. Basically no one should use strings.Compare.
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// As the comment above says, it is here only for symmetry with package bytes.
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// If performance is important, the compiler should be changed to recognize
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// the pattern so that all code doing three-way comparisons, not just code
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// using strings.Compare, can benefit.
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if a == b {
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return 0
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}
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if a < b {
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return -1
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}
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return +1
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}
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