[Issue 5519] Saner struct equality

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5519



--- Comment #2 from Denis Derman <denis.spir at gmail.com> 2011-02-03 03:40:07 PST ---
(In reply to comment #0)

> Surprisingly this works (DMD 2.051):
> 
> 
> struct Bar {
>     int x;
>     const bool opEquals(ref const(Bar) o) {
>         return x == o.x || x == -o.x;
>     }
> }
> struct Foo { Bar a; }
> void main() {
>     auto f1 = Foo(Bar(1));
>     auto f2 = Foo(Bar(-1));
>     assert(f1 == f2);  // this doesn't assert
> }

You probably meant in your comment: "this doesn't throw" didn't you? The
assertion passes, meaning the code behaves with expected semantics.

Denis

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