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maxim/select_at.ex

Created June 30, 2017 08:09
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select_at.ex
def select_at(list, indexes),
do: select_at(list, indexes, 0, []) |> Enum.reverse
def select_at([], _, _, results),
do: results
def select_at(_, [], _, results),
do: results
def select_at([item | list], [i | indexes], i, results),
do: select_at(list, indexes, i + 1, [item | results])
def select_at([_ | list], indexes = [index | _], i, results),
do: select_at(list, indexes, i + 1, results)
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