[SOLVED] Elixir equivalent to while true

Elixir equivalent to while true

I want to rewrite this method (written here in Python) in Elixir

def something()
    while True:
        x = function()
        y = function()
        if x != y:
            return x

function() generates a random value, so the execution would end sooner or later.

My problem is to translate the while True in the most "functional way" possible.

I came up with this solution, but I think is not very readable.


def something() do
    internal(function(), function())
end

defp internal(a, a) do
    internal(function(), function())
end

defp internal(a, _) do
    a
end

Is there a better way to do it?

PS: function() must be always called twice at every cycle and it cannot be rewritten.

Thanks

Solution

Elixir has variables and if expressions too, so all you really need to do is replace while True with a recursive call:

  def something() do
    x = function()
    y = function()

    if x != y do
      x
    else
      something()
    end
  end