[boost] Re: lvalue_cast

From: David Abrahams (dave_at_[hidden])
Date: 2004-09-15 14:37:57

Daniel Wallin wrote:

> Neal D. Becker wrote:
> 
>> 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);
>> }
> 
> 
> I wrote something like this, that has the upshot of being safe. ;)
> 
>   http://article.gmane.org/gmane.comp.lib.boost.devel/101531
> 

The trick would be to get it to return a const lvalue when you pass a 
const rvalue ;-)

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com