Re:Sshole
by cowlevel on Friday November 06, 2026 @08:05AM
(#50391862)
The type is akin to optional<int>. You can't add 5 to it, you have to dereference it first which crashes if it was null (0 or another chosen value).
[ Parent
| on HN ]
Well, in Rust you would use pattern matching, which can't even crash.
In Haskell, the closest thing to adding 5 to an optional value would be something like:
fmap (5+) my_optional_value
This one leaves 'Nothing' alone, but adds 5 in case the value is present.