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snewcomer/flatten.exs

Forked from veelenga/flatten.exs
Created September 15, 2019 01:15
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Flattening array in elixir
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flatten.exs
def flatten(list), do: flatten(list, []) |> Enum.reverse
def flatten([h | t], acc) when h == [], do: flatten(t, acc)
def flatten([h | t], acc) when is_list(h), do: flatten(t, flatten(h, acc))
def flatten([h | t], acc), do: flatten(t, [h | acc])
def flatten([], acc), do: acc
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