[一问一答(一)](%E4%B8%80%E9%97%AE%E4%B8%80%E7%AD%94%EF%BC%88%E4%B8%80%EF%BC%89.md) [为什么 Go 标准库中有些函数只有签名,没有函数体?](%E4%B8%BA%E4%BB%80%E4%B9%88Go%E6%A0%87%E5%87%86%E5%BA%93%E4%B8%AD%E6%9C%89%E4%BA%9B%E5%87%BD%E6%95%B0%E5%8F%AA%E6%9C%89%E7%AD%BE%E5%90%8D%EF%BC%8C%E6%B2%A1%E6%9C%89%E5%87%BD%E6%95%B0%E4%BD%93%EF%BC%9F.md)