Re: [Boost-Users] testing if shared_ptr has been assigned

From: Darin Adler (darin_at_[hidden])
Date: 2002-12-11 18:29:36

On Wednesday, December 11, 2002, at 11:01  AM, TEA Hartmann, Steven 
wrote:

> I need some help in testing for the condition of whether a shared_ptr 
> has been assigned.  In the following example, the "if( b != NULL ) 
> does not work. How would I do this test?
>
> typedef boost::shared_ptr<int> IPtr;
>
> int i( 0 );
> IPtr a( i );
> IPtr b;
>
> if( some condition )
> 	b = a;
>
> if( b != NULL ) { // How should this really be coded?
> }

if (b)

     -- Darin