Answer: Why can't I assign one dereference of a reference of a reference to another when the outer lifetimes differ?

Towry - Dec 13 '21 -

answer re: Why can't I assign one dereference of a reference of a reference to another when the outer lifetimes differ?

Name: Answer: Why can't I assign one dereference of a reference of a reference to another when the outer lifetimes differ?
Rating: 3.7 (7236 reviews)
Author: towry

Apr 13 '20

You cannot dereference a &'b mut &'c mut u32 and get a &'c mut u32 because:

&mut references are not trivially copiable, so you can't copy the &'c mut u32; and
You cannot move out of a reference, so you also can't move the &'c mut u32 (which would…