rustHow to yield return in Rust?

Rust provides the yield keyword to allow a function to return multiple values. It is used to create an iterator that can be used to iterate over a collection of values.

Example code

fn main() {
    let mut iter = yield_return();
    for i in iter {
        println!("{}", i);
    }
}

fn yield_return() -> impl Iterator<Item = i32> {
    let mut i = 0;
    loop {
        yield i;
        i += 1;
    }
}

Output example

0
1
2
3
4
...

Code explanation

• fn main(): This is the main function that will be called when the program is executed.
• let mut iter = yield_return(): This creates an iterator from the yield_return function.
• for i in iter: This loop iterates over the values returned by the yield_return function.
• yield i: This is the yield keyword, which returns the value of i to the iterator.
• i += 1: This increments the value of i for the next iteration.

Helpful links

• Rust Documentation - Iterators
• Rust Documentation - Yield

Edit this code on GitHub