rust-lang
Improve hint for as_ref_mut
The hint for as_ref_mut was written before the function num_sq was added and is currently incorrect. I'm pretty sure you can improve this hint, but at least it's correct
Just realised this existed and went to put in my own PR instead (That I've now closed) - @Frosthage Instead of straight up adding the answer there (and also limiting it to a u32, like @CaliViking mentioned above), what if it had it's own hint saying something like "Consider the type you'd want to use" - I think it's already clear (ish) from the actual comments on that file that it wants to be T: AsMut<_> like the others are something like T: AsRef<str> and the hint just needs to steer the user towards the correct data type. I'm not sure what the data type we could hint towards should be - I used u32 in my own solution, but any numeric one would be fine (does this pass with a generic usize? I've not tested that)
FWIW, I just went through all the exercises (as a genuine newbie to Rust) and this was the only exercise I failed to complete properly (as far as I can tell), and I found the hint quite unhelpful.
I could fix it if I specialised num_sq to u32 (with or without the Box), but trying to do with with a combination of generic and Box seemed hard, especially since a lot of types don't implement multiplication. I'd love to see what a correct solution with the generic, handling the Box.
![allcontributors[bot] avatar](https://avatars.githubusercontent.com/in/23186?v=4 "Published by a pub.dev verified publisher"){kind=small}