golang count_native 代码
文件路径：/src/internal/bytealg/count_native.go
/ Copyright 2018 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.
/go:build amd64 || arm || arm64 || ppc64le || ppc64 || riscv64 || s390x
package bytealg
/go:noescape
func Count(b []byte, c byte) int
/go:noescape
func CountString(s string, c byte) int
/ A backup implementation to use by assembly.
func countGeneric(b []byte, c byte) int {
n := 0
for _, x := range b {
if x == c {
n++
}
}
return n
}
func countGenericString(s string, c byte) int {
n := 0
for i := 0; i < len(s); i++ {
if s[i] == c {
n++
}
}
return n
}