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Guards Guards – small gotcha in Elixir guard expressions

• turtleyacht 3mo ago
  Elixir does not short-circuit its if-then either: if false or true do IO.puts("did not short-circuit (?)") end Maybe because `if' is a macro, the whole expression is sent in for evaluation: https://elixir-lang.readthedocs.io/en/latest/intro/5.html#if-and-unless https://elixir-lang.readthedocs.io/en/latest/intro/5.html#if...
  • hauleth 3mo ago
    What do you mean there? What is not short-circuited there?
    • turtleyacht 3mo ago
      The whole thing `false or true' is sent in for evaluation, so if there is a side-effect function that returns `true', it is executed too. Because Elixir treats it as a macro and not short-circuit.