Python generators equivalent?

Questions & Help Questions
7

Thanks everyone for your thoughts.

I have currently this passing test case:

  test "generators" do
    defmodule MyGen do
      use Snakeoil.Generators

      gen "counter", x do
        yield x
        counter(x+1)
      end

      gen "two", {x, y} do
        yield x + y
        two({x+1, y + 1})
      end
    end

    pid = spawn(fn -> MyGen.counter(0) end)
    assert 0 == MyGen.next(pid)
    assert 1 == MyGen.next(pid)
    assert 2 == MyGen.next(pid)

    pid = spawn(fn -> MyGen.two({2, 3}) end)
    assert 5 == MyGen.next(pid)
    assert 7 == MyGen.next(pid)
  end

This is a toy, of course - mostly an exercise in metaprogramming. I have to admit that having optional parentheses makes things like that fun to write - but I’m not sure how fun it would be if someone did use that in their own code :slight_smile: If i’m not mistaken, Elixir also favors explicit over implicit, which is good from me, coming over from Python land.