Enum.transpose/1 or List.transpose/1

[Oskar]

Hi!

Would you be open to `Enum.transpose(enumerable)` or `List.transpose(list)` functions? You can already transpose a list with `Enum.zip_with(list, & &1)` and `Stream.zip_with(list, & &1)`, however it's a bit difficult to understand the intent on first glance, whereas `transpose/1` would be a clear operation. I am unsure how other enumerables would fit into this, so maybe it should go under the List module.

What do you think?

Oskar

[Oskar]

To clarify, the list variable in my example is a two-dimensional list, e.g. [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

[José Valim]

Hi Oskar,

I think the best option in this case is to move it to a private function called transpose and then call Enum.zip_with/2. This makes the intent clear without adding to the API, especially because the term transpose it self can be overloaded.

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