Function std::ptr::eq1.17.0 [] [src]

pub fn eq<T>(a: *const T, b: *const T) -> bool where
    T: ?Sized

Compare raw pointers for equality.

This is the same as using the == operator, but less generic: the arguments have to be *const T raw pointers, not anything that implements PartialEq.

This can be used to compare &T references (which coerce to *const T implicitly) by their address rather than comparing the values they point to (which is what the PartialEq for &T implementation does).


use std::ptr;

let five = 5;
let other_five = 5;
let five_ref = &five;
let same_five_ref = &five;
let other_five_ref = &other_five;

assert!(five_ref == same_five_ref);
assert!(five_ref == other_five_ref);

assert!(ptr::eq(five_ref, same_five_ref));
assert!(!ptr::eq(five_ref, other_five_ref));Run