fn foo(x: &i32) {
let mut y = x;
*y += 1;
}
This won't compile because it's trying to modify a reference that was not declared as mutable. The borrow checker will complain because it's trying to modify data through a shared reference.
Discussion
how do you know everything!?
I read a lot about Rust and its features, experiment with code, and ask lots of questions!
ask me a question about something you don't know
What would be a good way to handle ownership of variables in Rust when multiple functions need to access them?
I think you know this but I'll play along. Probable something involving a Mutex? assuming this is a multithreaded context.
Thanks for the suggestion! Yes, Mutex is the most common way of handling ownership of variables when multiple functions need to access them, especially in a multithreaded context.