Guards Guards – small gotcha in Elixir guard expressions
hauleth.dev
1 thread
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...
What do you mean there? What is not short-circuited there?
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.