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enpedasi/map_join.ex

Last active December 17, 2018 12:18
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Example for Elixir left join
Raw
map_join.ex
vers = [%{name: "js", ver: 1}, %{name: "c", ver: 3}, %{name: "elixir", ver: 1.74}]
langs = [%{ id: 1, name: "elixir"}, %{ id: 2, name: "js"}]
langs |> Enum.map( fn rec -> %{ id: rec.id, rec: rec.name, ver: Enum.find(vers, fn v -> v.name == rec.name end)[:ver]} end)
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