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iex> [] [] iex> [1, 2, 3,] [1, 2, 3] iex> [1, :a, ['b']] [1, :a, ['b']] iex> [104, 101, 108, 108, 111] 'hello' iex> 'hełło' 'hełło' iex> 'こにちは、世界' [12371, 12395, 12385, 12399, 12289, 19990, 30028] iex> hd([1, 2, 3,]) 1 iex> tl([1, 2, 3]) [2, 3] iex> [1] ++ [2, 3] [1, 2, 3] iex> [1, 2, 3] -- [1] [2, 3]