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Subject: Re: [boost] Improving the assignment operators of various Boosttypes
From: Gevorg Voskanyan (v_gevorg_at_[hidden])
Date: 2008-09-11 03:34:10

Giovanni Piero Deretta wrote:

> If you do not want to deal with move emulation (which I've found very
> brittle in complex expressions), a simple way to to gain the advantage
> of T::operator=(T rhs) even when assigning from lvalues is something
> like:
> templateT destructive_copy(T& x) {
> using std::swap;
> T result;
> swap(result, x);
> return x;
> }
> which relies on NRVO to eliminate expensive copies:

Shouldn't the last statement be return result; instead? Or maybe I am missing something?

Best Regards,


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