std.algorithm.remove from array of custom classes?

[Andrea Fontana via Digitalmars-d-learn]

On Wednesday, 9 December 2015 at 13:13:36 UTC, BBaz wrote:
> 3) opEquals can be 'const' because the method doesn't mutate 
> the state of the object
> 4) your cast wasn't safe
>
>
> http://dlang.org/phobos/std_algorithm_mutation.html#.remove

Maybe something like this works better:

...

     override bool opEquals(T)(T obj) const
     if (is(T : A))
     {
         return (s == o.s) && (u == o.u);
     }

...