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Some fun with elixir
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| iex> Enum.map([1, 2, 3], fn x -> x * 3 end) | |
| [3, 6, 9] | |
| iex> Enum.map(%{1 => 2, 3 => 4}, fn {k, v} -> k * v end) | |
| [2, 12] |
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