Re: opCmp, [partial/total/pre]orders, custom floating point types etc.

[John Colvin via Digitalmars-d]

On Tuesday, 12 January 2016 at 20:52:51 UTC, Timon Gehr wrote:

On 01/12/2016 07:27 PM, John Colvin wrote:

...

struct S{
    auto opCmp(S rhs){ return float.nan; }
    bool opEquals(S rhs){ return false; }
}

unittest{
    S a,b;
    assert(!(a==b));
    assert(!(a<b));
    assert(!(a<=b));
    assert(!(a>b));
    assert(!(a>=b));
}

what about classes and Object.opCmp?