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Questions - borrow

Mutable reference to Vec<_> does not live long enough in while loop

Here's the code so far, the relevant lines are 27 and 28: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=37bba701ad2e9d47741da1149881ddd1 Error message: error[E059...
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leila-m

rust

lifetime

borrow

Votes: 0

Answers: 1

Latest Answer

I would suggest: Store copies of Cell in open instead of references to Cell open.push(Reverse(start.clone())); Make the parent field of the Cell struct a Box or Rc instead of reference: #[derive...
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qianfg

How does destructuring of borrowed data work at compile time?

I've been using destructuring to create references into nested data, just for practice. I created a method that uses destructuring to break apart a borrowed tuple: fn print_strings((x, y): &(Strin...
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C-RAD

rust

destructuring

coercion

borrow

Votes: 0

Answers: 1

Latest Answer

Since you are passing to print_strings() a reference to a tuple, it's not possible to get a String in it. So when accessing an individual element of that tuple in print_strings(), a &String is pre...
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at54321

Mutate an object which was taken from a vector

I have trouble solving an obvious simple problem. Basically I want to push an instance of a structure to a vector to get it out later and to modify the object by calling a function implemented for the...
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Horowitzathome

rust

reference

mutable

borrow

Votes: 0

Answers: 1

Latest Answer

Simply change strings.last() to strings.last_mut(). The last() method returns a standard (immutable) reference (to be more precise, Option<&T>). To be able to mutate the last String in the v...
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at54321

Rust lifetime syntax when borrowing variables

New to Rust and trying to teach myself, etc. I'm stuck on a lifetime issue. The closest question I could find that was already posted was: Argument requires that _ is borrowed for 'static - how do...
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growling_egg

rust

reference

lifetime

borrow

Votes: 0

Answers: 1

Latest Answer

The main problem in your code is that you used the 'static lifetime in your struct. I will try to explain what lifetimes are, how do they work and why you are facing this error. I warn you that this w...
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PauMAVA

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