Miss Dada  🏳️‍⚧️

Do you often find yourself using interior mutability in Rust? I have pretty much never *needed* it in recent years. In the few cases I have, it's turned out that I actually wanted to use atomics instead. I'm curious to see if using interior mutability is common or not. #rustlang

yes, because i have to deal with shared (Rc, Arc, and also GC'd) ownership situations a lot. interior mutability is basically the only option there also with things like graph datastructures, if you stick things in a petgraph you need interior mutability

Yeah trees and graphs are the main places I've had to use that too. That being said, I'm lucky enough to be able to keep those trees immutable in most cases though, so I actually end up only using Rc and not needing RefCell or whatever at all.

Luckily our children won't have to deal with this, since there likely won't be any trees left in a few decades. Which will also mean no more graphs without paper to print them on.

Child, learning programming: Why are these data structures called trees? Us: because when you think about how the world used to be you suddenly really feel like smoking some trees