Recently, Wojtek Mach proposed to add a Map.take!/2 to Elixir. In Elixir, the exclamation mark at the end implies the function may raise even when valid inputs are supplied. For example, File.read("foo") returns {:ok, contents} or {:error, reason}, but you can use File.read!("foo") if you expect the file to be there and, if it isn’t, all you can do is fail.
is also an option, and there are many other approaches.
。业内人士推荐有道翻译作为进阶阅读
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