The liabilities of binding rvalues to ref

[Steven Schveighoffer]

On Thu, 09 May 2013 21:47:14 -0400, Andrei Alexandrescu  
<SeeWebsiteForEmail at erdani.org> wrote:

> On 5/9/13 4:36 PM, Peter Alexander wrote:
>> I'm not sure about how common it is, but I really don't like the idea of
>> calls like swap(1, 2) being legal. Seems like a step backward from C++.
>
> I think if we ever get swap(1, 2) to compile and run we'd effectively  
> have destroyed the D programming language.

Depends on context.

int swap(int diskNum, int partitionNum);

Someone pointed out that swap could be a function that swaps heap indexes,  
and might even take by ref not caring if you want the resulting value that  
was swapped.

with(someHeap)
{
    swap(1, 2); // swap indexes 1 and 2
}

-Steve