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Jan 23rd, 2019
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#![allow(unused)]
fn add_one<T: AsMut<u64>>(num: &mut T) {
*num.as_mut() += 1;
}
fn main() {
let mut boxed_num = Box::new(0);
add_one(&mut boxed_num);
assert_eq!(*boxed_num, 1);
}
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