ch8/ch8-08 #185
ch8/ch8-08
#185
Replies: 1 comment
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Go1.16版本之后 func walkDir(dir string, wg *sync.WaitGroup, fileSizes chan<- int64) {
// ...
for _, entry := range dirents(dir) {
if entry.IsDir() {
wg.Add(1)
subdir := filepath.Join(dir, entry.Name())
walkDir(subdir, wg, fileSizes)
} else {
// 以下这种写法隐式忽略了返回的错误变量,编译器不允许!
// fileSizes <- entry.Info().Size() => 返回值是Info和err
info, _ := entry.Info()
fileSizes <- info.Size()
}
}
}
func dirents(dir string) []os.DirEntry {
entries, err := os.ReadDir(dir)
// ...
} |
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ch8/ch8-08
中文版
https://golang-china.github.io/gopl-zh/ch8/ch8-08.html
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