Write while loop equivalent in elixir

Questions & Help Questions
,
4

I think recursion is the simplest way to go…

defmodule Looper do
  def say_hello(times_left) do
    case times_left do
      0 ->
        :ok

      x ->
        IO.puts("hello")
        say_hello(x - 1)
    end
  end
end

Looper.say_hello(10)

You could use if instead of case since there are only two patterns.

Alternatively:

defmodule Looper do
  def say_hello(times_left) when times_left > 0 do
    IO.puts("hello")
    say_hello(times_left - 1)
  end

  def say_hello(times_left) when times_left == 0 do
    :ok  
  end
end

Looper.say_hello(10)