On Saturday, 7 November 2015 at 00:19:56 UTC, Ali Çehreli wrote:
Continuing from your hint: So, opCmp works but it is sort() that cannot move objects of ku around because of that immutable variable.
So my general question is: why immutable variables shouldn't be able to be moved (inside an array)?
There may be references to ku objects or its id members and those references may be depending on the immutability of that member. const and immutable members effectively make objects unassignable. (const part is the same in C++.)
And this is also something unexpected: yes, there may be such references and they should stay valid of course. But why shouldn't be a concrete collection of such references be sortable? Why this should affect other references to the individual 'ku' objects?
