this post was submitted on 16 Oct 2024
66 points (97.1% liked)

Rust

6029 readers
2 users here now

Welcome to the Rust community! This is a place to discuss about the Rust programming language.

Wormhole

!performance@programming.dev

Credits

  • The icon is a modified version of the official rust logo (changing the colors to a gradient and black background)

founded 1 year ago
MODERATORS
snowe@programming.dev
Ategon@programming.dev
EdTheLegendary@programming.dev
kahnclusions@programming.dev
torcherist@programming.dev
66
What are some mind blowing Rust tricks? (programming.dev)
submitted 1 month ago* (last edited 1 month ago) by little_ferris@programming.dev to c/rust@programming.dev
52 comments fedilink hide all child comments
 

If we were to create a Rust version of this page for Haskell, what cool programming techniques would you add to it?

you are viewing a single comment's thread
view the rest of the comments
[–] Ephera@lemmy.ml 2 points 1 month ago* (last edited 1 month ago)

Well, you would determine the TypeId of SomeOtherType, then search for that as the key in your HashMap and get back a None, because no entry exists and then you'd hand that back to the user.
I guess, my little usage example should've included handling of an Option value...

So, it's only a runtime error, if you decide to .unwrap() or similar.