golang example_test 代码
文件路径：/src/io/fs/example_test.go
/ 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 fs_test
import (
"fmt"
"io/fs"
"log"
"os"
)
func ExampleWalkDir() {
root := "/usr/local/go/bin"
fileSystem := os.DirFS(root)
fs.WalkDir(fileSystem, ".", func(path string, d fs.DirEntry, err error) error {
if err != nil {
log.Fatal(err)
}
fmt.Println(path)
return nil
})
}