Re: [boost] Interest check: constant input matching manipulator

Subject: Re: [boost] Interest check: constant input matching manipulator
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2009-04-09 08:56:56

On Wednesday, April 08, 2009 9:35 PM
Steven Watanabe wrote:
> Scott McMurray wrote:
> >
> > Do we need any (new) syntax at all?  What if we just make RValues
> > always do that where reasonable?  Then we can spell it add_const if
> > actually needed...
>
> You can't overload operator>> for a built in type and a std::istream.

I presume you're referring to 17.4.3.1/1, but the necessary operators would be in the global namespace and they don't conflict with the existing overloads because of the const arguments:

   template
   <
      class IStream
    , class Char = IStream::char_type
    , class Traits = IStream::traits_type
    , class Allocator = std::allocator<Char>
   >
   IStream &
   operator >>(IStream & _stream,
      std::basic_string<Char,Traits,Allocator> const & _literal);

   template <class IStream>
   IStream &
   operator >>(IStream & _stream,
      typename IStream::char_type const * _literal);

Did I miss something?

_____
Rob Stewart                           robert.stewart_at_[hidden]
Software Engineer, Core Software      using std::disclaimer;
Susquehanna International Group, LLP  http://www.sig.com

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