The Ultimate Guide to Rust Programming/

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Copy Values

Copy Values

We'll cover the following...

OK, I get it. A value has an owner, and you can’t use a value after it’s been moved to a new owner. Awesome. Then why does this code work?

Rust 1.40.0
fn count(apples: i32) {
    println!("You have {} apples", apples);
}
fn price(apples: i32) -> i32 {
    apples * 8
}
fn main() {
    let apples: i32 = 10;
    count(apples);
    let price = price(apples);
    println!("The apples are worth {} cents", price);
}

We create the value 10, owned by the main function, and put it in the apples variable. Then we call count(apples), which moves the value into the ...