Haskell

Code written in Haskell is guaranteed to have no side effects.

Because no one will ever run it! LLLLEEEELLLLL

>>4
Aren't you the cool guy. And how do you use monad transformers without lifting? I tried the "layers" package once, but it fucking died when I tried a monad stack with two StateT's in it.
If you have two or more of same transformers on the stack, how are you going to distinguish their levels without lifting, huh?