Re: [Boost-users] Boost has a function to const-qualify?

From: Eric Niebler (eric_at_[hidden])
Date: 2006-01-16 17:07:58

Thorsten Ottosen wrote:
> Eric Niebler wrote:
>> Thorsten Ottosen wrote:
>>
>>> as_mutable();
>>>
>>> The latter would be a cast from rvalue to lvalue like it happens in 
>>> boost.foreach.
>>
>> Not sure what you're referring to. Boost.Foreach does no such 
>> rvalue-to-lvalue cast.
> 
> So this wouldn't compile:
> 
> vector<int> foo();
> ...
> BOOST_FOREACH( int& r, foo() )
>    ++r
> 
> ?

No, it doesn't compile, and it shouldn't. What would be the point of 
mutating the unnamed temporary vector returned by foo()?

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