Re: [boost] Improving the assignment operators of various Boost types

Subject: Re: [boost] Improving the assignment operators of various Boost types
From: Michael Marcin (mike.marcin_at_[hidden])
Date: 2008-09-10 14:22:26

Andrey Semashev wrote:
> One downside is that self-assignment is made suboptimal. My typical 
> operator= implementation is:
> 
>   T& operator= (T const& that)
>   {
>     if (this != &that)
>       T(that).swap(*this);
>     return *this;
>   }
> 
> Not sure, however, if it is critical enough.

In practice I haven't written any interesting code that does self 
assignment. Perhaps you have. In my code I'd consider this a pessimization.

Thanks,

Michael Marcin