ListFilter A simple module that count all the odd numbers in a string list. Commands $ mix test $ iex -S mix > ListFilter.call(["1", "3", "6", "43", "banana", "6", "abc"]) > 3 Resources https://stackoverflow.com/questions/22576658/convert-elixir-string-to-integer-or-float https://hexdocs.pm/elixir/String.html https://hexdocs.pm/elixir/Enum.html#filter/2