How do you overload opEquals?

[Dale Matthews]

On Tuesday, 19 November 2013 at 21:10:57 UTC, Chris 
Nicholson-Sauls wrote:
>     override bool opEquals (Object o) const {
>         if ( auto v = cast( typeof( this ) ) o )
>             return x == v.x && y == v.y && z == v.z;
>         return false;
>     }
>
>
> You need:
> 1) 'override' in order to override the base class 
> implementation.
> 2) 'Object' typed parameter, then cast.

Very cool, it works great! Thanks for the help, Chris.

Adam, do you recommend using a struct instead of a class? I'm 
from C++ where structs are mainly used for PODs. It sounds handy 
in instances like this though: 
http://dlang.org/cpptod.html#structcmp