3 ms·
Parse it as lisp. It's haskell-type-system-speak for "If you declare something to be a String, it really means String or null."
by jamie_ca 16y ago
Parse it as lisp.
It's haskell-type-system-speak for "If you declare something to be a String, it really means String or null."
- pjscott 16y agoThe Haskell type for that would be "Maybe String". When you get a Maybe value, the compiler gives an error if you don't deal with the possibility that the value might be Nothing.