Enum.split_while
You're seeing just the function
split_while
, go back to Enum module for more information.
Specs
Splits enumerable in two at the position of the element for which
fun
returns a falsy value (false
or nil
) for the first time.
It returns a two-element tuple with two lists of elements. The element that triggered the split is part of the second list.
Examples
iex> Enum.split_while([1, 2, 3, 4], fn x -> x < 3 end)
{[1, 2], [3, 4]}
iex> Enum.split_while([1, 2, 3, 4], fn x -> x < 0 end)
{[], [1, 2, 3, 4]}
iex> Enum.split_while([1, 2, 3, 4], fn x -> x > 0 end)
{[1, 2, 3, 4], []}