In Go 1.16, the ioutil.ReadFile function, which reads the content of a file, was deprecated in favor of the new os.ReadFile function. In effect, the function was renamed, though of course Go’s compatibility promise prevents us from ever removing the old name.
^ Ibbetson, supra note 111, at 76–77.
，详情可参考搜狗输入法
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@OptIn(ExperimentalForeignApi::class)