Is there a way to have a Rust closure that moves only some variables into it?

Question

I have a general struct with settings and an extra variable setting that I want to tune and play around with.

For all possible values in an integer ra

Answer 1

The closure! macro gives the ability to selectively reference, move, or clone variables into a closure.

Example taken from the docs:

use closure::closure;

let string = "move".to_string();
let x = 10;
let mut y = 20;
let rc = Rc::new(5);

let closure = closure!(move string, ref x, ref mut y, clone rc, |arg: i32| {
    ...
});

Variables that are captured but not listed default to being moved.