From my personal experience I think Rust's string system is hard to beat at the ...

chrismorgan · on May 30, 2019

I’m glad that Rust strings aren’t indexable by integer, but I think that making them indexable by range (of UTF-8 code unit offsets) was an error. `foo[0..10]` should have been `foo.slice(0..10)` or similar instead.

the_mitsuhiko · on May 30, 2019

It’s a bit of a footgun indeed but it’s quite handy in combination with the char index iterator.

chrismorgan · on May 30, 2019

Sure, you do want to be able to index by code unit range, but it shouldn’t have been with the Index trait.

zucker42 · on May 30, 2019

There's no reason this couldn't be added now, though, right?

richardwhiuk · on May 30, 2019

The only annoyance is the occasional unwrap, when something is provably impossible, but the type system can't detect it.

1f60c · on May 30, 2019

That’s what `unwrap` is for, though.