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From: dan marsden (danmarsden_at_[hidden])
Date: 2005-11-28 18:11:58
--- Jaakko Jarvi <jarvi_at_[hidden]> wrote:
> On Nov 25, 2005, at 11:14 AM, John Maddock wrote:
> > There appear to be other problems with the
> comparison operators,
> > these are
> > required to use only operators == and < on the
> types held by the
> > tuple, but
> > given:
> >
> > struct strict_comparison1{};
> > struct strict_comparison2{};
> > bool operator==(const strict_comparison1&, const
> strict_comparison1&);
> > bool operator<(const strict_comparison1&, const
> strict_comparison1&);
> > bool operator==(const strict_comparison2&, const
> strict_comparison2&);
> > bool operator<(const strict_comparison2&, const
> strict_comparison2&);
> > bool operator==(const strict_comparison1&, const
> strict_comparison2&);
> > bool operator<(const strict_comparison1&, const
> strict_comparison2&);
> > bool operator==(const strict_comparison2&, const
> strict_comparison1&);
> > bool operator<(const strict_comparison2&, const
> strict_comparison1&);
> >
> > Then trying to instantiate the operators with:
> >
> > // strict comparisons:
> > const std::tr1::tuple<strict_comparison1,
> strict_comparison2>
> > comp1, comp2;
> > verify_return_type(comp1 == comp2, false);
> > verify_return_type(comp1 != comp2, false);
> > verify_return_type(comp1 < comp2, false);
> > verify_return_type(comp1 > comp2, false);
> > verify_return_type(comp1 <= comp2, false);
> > verify_return_type(comp1 >= comp2, false);
> >
> > Fails with some extremely criptic error messages
> in operator!=
> >
>
Joel asked me to have a look at the fusion1 TR1 stuff.
I've had a go at the support for pairs in
tuple_element, tuple_size, and get. I've just modified
the operators based on the comments above as well.
I've updated some of the fusion tests, but I've not
had chance to run your TR1 test material yet. My tests
were compiled against mingw gcc, and all was ok.
Anyway, hope this is helpful, let me know if there are
any (other) problems.
Cheers
Dan
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