Re: [boost] [range][foreach] Range fixes broke foreach

From: Eric Niebler (eric_at_[hidden])
Date: 2007-10-24 11:58:02

Neal Becker wrote:
> I'm a bit confused.
> 
> I'm working with blitz++.  It has
> 
> template<typename T, int N> class Array ...
> 
> which already has a begin(), end(), but I can't use them.  I'm specializing
> boost::begin,end,etc to hide them (I don't want to modify the blitz Array
> class)
> 
> If I specialize range_begin:
> 
> namespace boost {
>   
>   template<typename T, int N>
>   inline typename blitz::array_iterator< blitz::Array<T,N> >::type
> range_begin (blitz::Array<T,N> & a) {
>     return blitz::range_begin (a);
>   }
> }

(Terminology issue: this is an overload, not a specialization.)

The correct place for the range_begin() overload for conforming 
compilers would be in the same namespace as the Array class. That way, 
it is found via ADL.

HTH,

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com