implementing lifetimes and trait bounds in a generic Rust function
I'm migrating some code and I'm refactoring my project and I'm working on a personal project and I'm trying to implement a generic function in Rust that takes an iterator and returns a vector of transformed elements..... However, I'm running into issues with lifetimes and trait bounds that I need to seem to resolve. Here's the code that I've written so far: ```rust fn transform_elements<T, I>(iter: I) -> Vec<T> where I: Iterator<Item = T>, { iter.map(|x| x).collect() } ``` This function is supposed to take any iterator and transform its elements, but when I try to call it with a vector like this: ```rust fn main() { let numbers = vec![1, 2, 3]; let transformed = transform_elements(numbers.iter()); // behavior occurs here } ``` I receive the following behavior: ``` behavior[E0277]: the trait bound `&{integer}: std::marker::Copy` is not satisfied ``` I've tried changing the function to take an iterator of references instead, but that leads to lifetime issues. For example: ```rust fn transform_elements<'a, T, I>(iter: I) -> Vec<T> where I: Iterator<Item = &'a T>, T: Copy, { iter.map(|&x| x).collect() } ``` With this, I still need to seem to make it work when calling it with a vector, since the lifetimes seem to conflict. I want the function to be as generic as possible without sacrificing safety or performance. How can I define these lifetimes and bounds correctly to achieve my goal? The stack includes Rust and several other technologies. What would be the recommended way to handle this? This issue appeared after updating to Rust stable. How would you solve this? I'm using Rust 3.11 in this project. Thanks in advance!