fn main() {
let i = 0i64;
change();
assert_eq!(i, 1);
}
fn change() {
/// code here
}
here is the code
fn main() {
let i = 0i64;
change();
assert_eq!(i, 1);
}
fn change() {
/// code here
}
here is the code
No, it's not possible. Functions don't have the ability to reach outside of their scope and touch variables elsewhere. If you instead provide the function with a mutable reference to your value, you can totally change it then:
fn main() {
let mut x = 0;
change(&mut x);
assert_eq!(x, 1);
}
fn change(val: &mut usize) {
*val += 1;
}
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