Re: [boost] lvalue_cast

From: Rob Stewart (stewart_at_[hidden])
Date: 2004-09-15 15:03:30

From: "Neal D. Becker" <nbecker_at_[hidden]>
> 
> This handy little item, lvalue_cast, would make a useful addition to boost.  I 
> didn't write it, and I don't recall who did.
> 
> template<class T>
> inline T& lvalue_cast (const T& rvalue) {
>   return const_cast<T&> (rvalue);
> }

That's just a different spelling of const_cast.  To make it
useful, you need to make it more generic:

   template <typename T>
   inline T &
   lvalue_cast(T & value_i)
   {
      return value_i;
   }

That, of course, permits you to silently cast away the const-ness
of const lvalues.  Thus, Daniel Wallin's version, at
http://article.gmane.org/gmane.comp.lib.boost.devel/101531, is
much better.

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