[boost] Re: Constrained genericity at last? (any interestinanoperator traits/concept traits library?)

From: David Abrahams (dave_at_[hidden])
Date: 2004-09-27 06:32:07

"Victor A. Wagner Jr." <vawjr_at_[hidden]> writes:

> At Saturday 2004-09-25 05:47, you wrote:
>>"Victor A. Wagner Jr." <vawjr_at_[hidden]> writes:
>>
>> > I don't mean to pick on you in particular.  I just got tired of
>> > hearing people repeat the "mantra" of "you can subtract two pointers,
>> > but not add them".  It's simply NOT true.
>>
>>Well, the nitpicking seems a bit unwarranted since it certainly is
>>true in C++.  It all depends on context, doesn't it?
>
> what's true, you can't add pointers?  

In C++, you can't add pointers.

> that's a rule written by some folks that has NO bearing on reality
> as my message showed.  A rather pointless rule at that.

Maybe.  It doesn't make much sense until you divide by 2 ;-).

> did you actually understand the argument?

Of course.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com