Why D is annoying =P

[Ellery Newcomer]

On 10/24/2012 01:16 PM, Mehrdad wrote:
> On Wednesday, 24 October 2012 at 20:03:44 UTC, H. S. Teoh wrote:
>> What's wrong with RedBlackTree? You can just do something like:
>>
>>     RedBlackTree!(RedBlackTree!MySet) setOfSets;
>
>
> The last time I checked two RedBlackTrees for equality, they seemed to
> have reference semantics...
>

Dang.

import std.container;
import std.stdio;

void main() {
     auto a = make!(RedBlackTree!int)(1,2,3,4);
     auto b = make!(RedBlackTree!int)(1,2,3,4);
     writeln(a == b);
}

prints

false


Explanation: RedBlackTree doesn't override opEquals. Either file an 
enhancement request or use equal(a[], b[]), depending on whether 
opEquals *should* have reference semantics.

Actually, it shouldn't, since that would differ from array/string 
opEquals semantics.

SList works

Array works

Oop. DList goes into infinite loop. Dibs on this bug report.