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koolquark/map_match.ex

Created June 21, 2019 11:06
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Elixir - Map matching at function head
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map_match.ex
defmodule MapTest do
def hmap(%{ :a => "a"} = changeset) do
IO.inspect changeset
end
end
MapTest.hmap(%{ :a => "a", :b => "B" }) # matches
MapTest.hmap(%{ :a => "A", :b => "B" }) # clause error
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