The function name conflicts with the function in the Kernel module. Is there a way to call its own function first?

Question

For example, div/2 is an existing function in the Kernel module. I want to call my own div/2 function instead of the Kernel.div/2 function.

Answer 1

You can un-import a function in Kernel by explicitly importing Kernel and excluding the functions you don't want with the except option:

defmodule A do
  import Kernel, except: [div: 2]

  def div(a, b), do: a * b

  def do_div, do: div(3, 4)
end

IO.inspect A.do_div()

Output:

12