The liabilities of binding rvalues to ref

[Andrei Alexandrescu]

On 5/5/13 3:00 AM, Jonathan M Davis wrote:
> On Sunday, May 05, 2013 01:49:42 Andrei Alexandrescu wrote:
>> There may be other important patterns to address at the core, please
>> chime in. I consider (1) above easy to tackle, which leaves us with at
>> least (2). My opinion is that any proposal for binding rvalues to ref
>> must offer a compelling story about these patterns.
>
> Another case is when you want to distinguish between lvalues and rvalues.

Good one. This is in fact what happened in C++: const T& binds so 
tightly to T rvalues, that it was impossible to work a wedge in between 
to allow overloading on T and on const T&. Therefore, a much heavier 
solution was needed.

Andrei