在字符串尾部添加新的字符串及间隔符.

filepath.WalkFunc: func(path string, info os.FileInfo, err error) error {}.

GetDirAllEntryPathsFollowSymlink gets all the file or dir paths in the specified directory recursively.

UnsafeBytesToStr converts []byte to string without memory copy.

UnsafeStrToBytes converts string to []byte without memory copy.

NotFoundIndex is the position index for string not found in searching functions.

UNICODE相关.