Arc Forumnew | comments | leaders | submitlogin
4 points by aw 5565 days ago | link | parent

Why was a macro used to define when and not a function?

Ah, but your definition of when2 doesn't work:

  arc> (= x 1)
  1
  arc> (when nil (= x 2))
  nil
  arc> x
  1
  arc> (when2 nil (= x 3))
  nil
  arc> x
  3
When you call a function, the arguments to the function are evaluated before the function is called.


3 points by graphene 5565 days ago | link

OK thanks, I feel as if I should have caught that..

I'll have to put some thought into what the consequences of that are exactly..

Thanks for your answer :-)

-----