programming languages
rust: includes no null and an optional type, a great way to prevent run time errors
also rust: includes an unwrap function that bypasses the safety of the optional type and can cause run time errors
programming languages
@lizardsquid no null... what...
how do you say undefined, then?
how do you say return "I didn't find the number you wanted"?
programming languages
@Efi there's an option type!
it's either
Some(value)
or
None
so if your function needs to sometimes return nothing, you have to wrap it up in an option.
The point of this: you never get null pointer errors. Ever. Because the language knows if you forgot to check.
programming languages
@lizardsquid there's another way to not get null pointer errors: don't use pointers in user code
programming languages
@Efi [functional agreement]
(I use haskell as my main language, so...)
programming languages
@lizardsquid [functional rant]