List.improper-question-mark
You're seeing just the function
improper-question-mark
, go back to List module for more information.
Specs
improper?(maybe_improper_list()) :: boolean()
Returns true
if list
is an improper list. Otherwise returns false
.
Examples
iex> List.improper?([1, 2 | 3])
true
iex> List.improper?([1, 2, 3])
false