rustHow to create a generator function in Rust?

A generator function in Rust is a function that can be used to generate a sequence of values. It is defined using the yield keyword.

Example

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

Output example

0
1
2
3
...

Code explanation

• fn generator() -> impl Iterator<Item = i32>: This is the function signature, which defines the return type as an iterator of type i32.
• let mut i = 0: This declares a mutable variable i and initializes it to 0.
• yield i: This is the yield keyword, which is used to return a value from the generator.
• i += 1: This increments the value of i by 1.

Helpful links

• Rust Generators
• Rust Iterators

Edit this code on GitHub