On 12/4/10 8:29 AM, Jonathan M Davis wrote:
On Saturday 04 December 2010 06:00:58 Andrei Alexandrescu wrote:
On 12/4/10 4:35 AM, Jonathan M Davis wrote:
On Friday 03 December 2010 22:42:06 Don wrote:
(1) Should temporaries be allowed to be passed as 'const ref'?

I honestly do not understand why they can't be already. C++ definitely
allows this.

C++'s second biggest mistake.

Okay. Why is it a mistake? I've never heard anyone say that this was a mistake
before. As far as I can tell, it's extremely desirable, and this problem with
opEquals() is a prime example as to why. What is wrong with allowing temporaries
to be passed as const ref? What makes it such a big mistake?

It makes it impossible to distinguish an rvalue from an lvalue.

Andrei

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