Re: [boost] [assignment] += for containers on right side

Subject: Re: [boost] [assignment] += for containers on right side
From: Amir Ansari (amir.ansari80_at_[hidden])
Date: 2012-07-20 07:12:02

std::valarray provides this type of functionality. If you need to use a vector, you can write your own operator overload:


template<class T>

std::vector<T> & operator += (std::vector<T> & l, int r)
{
    std::for_each(l.begin(), l.end(), [r] (T & t) { t += r; });

    return l;

}


Hope this helps.


________________________________
 From: Kai Schroeder <kaischroeder3_at_[hidden]>
To: boost_at_[hidden] 
Sent: Friday, July 20, 2012 3:38 PM
Subject: Re: [boost] [assignment] += for containers on right side
 
Hi Digi,

as far as I know there is no such functionality in Boost. To implement
this I would take inspirations from boost::assign and make use of
boost::range.

Regards,
Kai


On 7/19/12, Jochen Wilhelmy <jochen.wilhelmy_at_[hidden]> wrote:
> Hi!
>
> is it possible to make += also work for containers on right side?
> i.e.
> int a;
> std::vector<int> b;
> std::list<int> c;
> std::vector<int> d;
> d += a,b,c,d;
>
> this would be similar to strings where += at least works with one string
> on the right side.
>
> -Jochen
>
>
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