Arc obtains internal variability
[]
= "0.1"
let a = new;
unsafe
assert_eq!;
Arc obtains internal variability
[dependencies]
arcell = "0.1"
let a = ArcCell::new(10);
unsafe {
let ref_mut_a = ArcCell::get_mut_uncheck( &a);
*ref_mut_a = 11;
}
assert_eq!(*a, 11);