elixir - 具有无动于衷的 key 访问的 map

Question

在 Map 上匹配定义为原子或字符串的键的最佳实践是什么？

%{"artist" => artist, "track" => track, "year" => year}

对比

%{artist: artist, track: track, year: year}

功能需要在两者上匹配:

def duplicate_post(%{"artist" => artist, "track" => track, "year" => year}) do
  ...
end

Answer 1

我能想到的最好方法是定义函数两次，每种输入一次，然后从另一个中调用其中一个。

def duplicate_post(%{"artist" => artist, "track" => track, "year" => year}) do
  duplicate_post(%{artist: artist, track: track, year: year})
end

def duplicate_post(%{artist: artist, track: track, year: year}) do
  ...
end