Rust 1.66 nightly 기능❤️Box::assume_init 성능향상 기능

#![feature(new_uninit)]

let big_box = Box::<[usize; 1024]>::new_uninit();

let mut array = [0; 1024];
for (i, place) in array.iter_mut().enumerate() {
    *place = i;
}

// The optimizer may be able to elide this copy, so previous code writes
// to heap directly.
let big_box = Box::write(big_box, array);

for (i, x) in big_box.iter().enumerate() {
    assert_eq!(*x, i);
}

 Box::assume_init

Box in std::boxed - Rust

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

---