There are unconfirmed reports that this morning, the C++0x standards group in Frankfurt voted to kill Concepts.

On Mon, Jul 13, 2009 at 5:33 PM, Walter Bright<newshound1@digitalmars.com> wrote:
> There are unconfirmed reports that this morning, the C++0x standards group in Frankfurt voted to kill Concepts.

Oh, wow.

On Mon, Jul 13, 2009 at 5:46 PM, Jarrett Billingsley<jarrett.billingsley@gmail.com> wrote:
> On Mon, Jul 13, 2009 at 5:33 PM, Walter Bright<newshound1@digitalmars.com> wrote:
>> There are unconfirmed reports that this morning, the C++0x standards group in Frankfurt voted to kill Concepts.
>
> Oh, wow.

I mean, really, I'm kind of speechless.

I thought they were supposed to be one of the killer features.

Jarrett Billingsley wrote:
> On Mon, Jul 13, 2009 at 5:46 PM, Jarrett
> Billingsley<jarrett.billingsley@gmail.com> wrote:
>> On Mon, Jul 13, 2009 at 5:33 PM, Walter
>> Bright<newshound1@digitalmars.com> wrote:
>>> There are unconfirmed reports that this morning, the C++0x standards group
>>> in Frankfurt voted to kill Concepts.
>> Oh, wow.
> 
> I mean, really, I'm kind of speechless.
> 
> I thought they were supposed to be one of the killer features.

You were at the wrong tense: -ing, not -er. :o)

Andrei

On Mon, Jul 13, 2009 at 5:59 PM, Andrei Alexandrescu<SeeWebsiteForEmail@erdani.org> wrote:
> Jarrett Billingsley wrote:
>>
>> On Mon, Jul 13, 2009 at 5:46 PM, Jarrett Billingsley<jarrett.billingsley@gmail.com> wrote:
>>>
>>> On Mon, Jul 13, 2009 at 5:33 PM, Walter Bright<newshound1@digitalmars.com> wrote:
>>>>
>>>> There are unconfirmed reports that this morning, the C++0x standards
>>>> group
>>>> in Frankfurt voted to kill Concepts.
>>>
>>> Oh, wow.
>>
>> I mean, really, I'm kind of speechless.
>>
>> I thought they were supposed to be one of the killer features.
>
> You were at the wrong tense: -ing, not -er. :o)

Ahaha, good one :)

Yeah, what's the solution to a complex, incomprehensible language? More complexity!

Jarrett Billingsley wrote:
> On Mon, Jul 13, 2009 at 5:59 PM, Andrei
> Alexandrescu<SeeWebsiteForEmail@erdani.org> wrote:
>> Jarrett Billingsley wrote:
>>> On Mon, Jul 13, 2009 at 5:46 PM, Jarrett
>>> Billingsley<jarrett.billingsley@gmail.com> wrote:
>>>> On Mon, Jul 13, 2009 at 5:33 PM, Walter
>>>> Bright<newshound1@digitalmars.com> wrote:
>>>>> There are unconfirmed reports that this morning, the C++0x standards
>>>>> group
>>>>> in Frankfurt voted to kill Concepts.
>>>> Oh, wow.
>>> I mean, really, I'm kind of speechless.
>>>
>>> I thought they were supposed to be one of the killer features.
>> You were at the wrong tense: -ing, not -er. :o)
> 
> Ahaha, good one :)
> 
> Yeah, what's the solution to a complex, incomprehensible language?
> More complexity!

Speaking of which, I think D has reached the perfect shade with restricted templates. That is, after Walter fixes the related bugs...

Andrei

Walter Bright wrote:
> There are unconfirmed reports that this morning, the C++0x standards group in Frankfurt voted to kill Concepts.

Who cares. Or, in other words ; do you consider D constraints as "can't life without" feature ?
(no offense.. just think it's not that remarkable)

Andrei Alexandrescu wrote:
> Jarrett Billingsley wrote:
>> On Mon, Jul 13, 2009 at 5:59 PM, Andrei
>> Alexandrescu<SeeWebsiteForEmail@erdani.org> wrote:
>>> Jarrett Billingsley wrote:
>>>> On Mon, Jul 13, 2009 at 5:46 PM, Jarrett
>>>> Billingsley<jarrett.billingsley@gmail.com> wrote:
>>>>> On Mon, Jul 13, 2009 at 5:33 PM, Walter
>>>>> Bright<newshound1@digitalmars.com> wrote:
>>>>>> There are unconfirmed reports that this morning, the C++0x standards
>>>>>> group
>>>>>> in Frankfurt voted to kill Concepts.
>>>>> Oh, wow.
>>>> I mean, really, I'm kind of speechless.
>>>>
>>>> I thought they were supposed to be one of the killer features.
>>> You were at the wrong tense: -ing, not -er. :o)
>>
>> Ahaha, good one :)
>>
>> Yeah, what's the solution to a complex, incomprehensible language?
>> More complexity!
> 
> Speaking of which, I think D has reached the perfect shade with restricted templates. That is, after Walter fixes the related bugs...
> 
> Andrei

... And gets rid of SFNAE... Seriously, with restricted templates, template specializations, static if, etc., SFNAE is about as bug-prone a "feature" as we have in the language.

BLS wrote:
> Walter Bright wrote:
>> There are unconfirmed reports that this morning, the C++0x standards group in Frankfurt voted to kill Concepts.
> 
> Who cares. Or, in other words ; do you consider D constraints as "can't life without" feature ?
> (no offense.. just think it's not that remarkable)

It's remarkable in that Concepts were considered the marquee feature of C++0x. I think that D constraints fill the same niche, but without any of the complexity of Concepts.

Walter Bright:
> There are unconfirmed reports that this morning, the C++0x standards group in Frankfurt voted to kill Concepts.

C++0x Concepts are too much complex for the advantages they offer. Can't they replace Concepts with something similer like D constraints?

C++0x can also take a look at Haskell, where the idea of Concepts is done much better :-)

Bye,
bearophile