Integer.undigits
You're seeing just the function
undigits, go back to Integer module for more information.
Specs
undigits([integer()], pos_integer()) :: integer()
Returns the integer represented by the ordered digits.
An optional base value may be provided representing the radix for the digits.
Base has to be an integer greater than or equal to 2.
Examples
iex> Integer.undigits([1, 2, 3])
123
iex> Integer.undigits([1, 4], 16)
20
iex> Integer.undigits([])
0