Re: [boost] Re: copy_if

From: Bjarne Stroustrup (bs_at_[hidden])
Date: 2001-01-09 20:50:11

> From: "DEAN STURTEVANT" <dean_at_[hidden]> writes
> Interesting note: If you look in Nicolai Josuttis' book (The C++ 
> Standard Library, Addison-Wesley 1999) p. 380, you'll find the 
> statement
> 
> remove_copy_if() is a combination of copy() and remove_if(). It 
> removes each element in the source range [beg,end) ...
> 
> which is certainly not the definition in the standard!
> 
> - Dean

To the best of my knowledge, this is what was mistakenly removed from the 
original STL:

template<class In, class Out, class Pred>
Out copy_if(In first, In last, Out res, Pred p)
{
        while (first != last) {
                if (p(*first)) *res++ = *first;
                ++first;
        }
        return res;
}
 

        - Bjarne
Bjarne Stroustrup, http://www.research.att.com/~bs