PassiveSupport.Range.size

You're seeing just the function size, go back to PassiveSupport.Range module for more information.

size(arg)

(since 0.1.0)

size(Range.t()) :: integer()

Returns the size of the range

iex> size(1..5)
5
iex> size(0..5)
6
iex> size(5..0)
6