Enum.map_join

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map_join(enumerable, joiner \\ "", mapper)

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Specs

map_join(t(), String.t(), (element() -> String.Chars.t())) :: String.t()

Maps and joins the given enumerable in one pass.

If joiner is not passed at all, it defaults to an empty string.

All elements returned from invoking the mapper must be convertible to a string, otherwise an error is raised.

Examples

iex> Enum.map_join([1, 2, 3], &(&1 * 2))
"246"

iex> Enum.map_join([1, 2, 3], " = ", &(&1 * 2))
"2 = 4 = 6"