Re: [boost] [optional] little addition

Subject: Re: [boost] [optional] little addition
From: David Abrahams (dave_at_[hidden])
Date: 2009-02-27 14:10:33

On Feb 27, 2009, at 4:08 AM, Arno Schödl wrote:

> I just started using boost::optional, and this proved to be  
> generically useful, but I believe is currently not in boost::optional:

> boost::optional< TMyValue > TryToGetT();
> T t;
>
> if( !optional_assign( t, TryToGetT () ) {
>    ... other way to get t ...
> }
>
> instead of the more verbose:
>
> boost::optional< TMyValue > TryToGetT();
> T t;

So you dislike

   if ( !(t = TryToGetT()) )  {
      ...other way to get t ...
   }

For efficiency reasons?
--
David Abrahams
BoostPro Computing
http://boostpro.com