1 // Copyright 2020 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build compiler_bootstrap 6 7 package strconv 8 9 // index returns the index of the first instance of c in s, or -1 if missing. 10 func index(s string, c byte) int { 11 for i := 0; i < len(s); i++ { 12 if s[i] == c { 13 return i 14 } 15 } 16 return -1 17 } 18