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

From: TEA Hartmann, Steven (SHartmann_at_[hidden])
Date: 2002-12-12 11:42:23

Thanks all.  That works beautifully.

-----Original Message-----
From: Tom Matelich [mailto:tmatelich_at_[hidden]]
Sent: Thursday, December 12, 2002 12:25 AM
To: 'Boost-Users_at_[hidden]'
Subject: RE: [Boost-Users] testing if shared_ptr has been assigned

if(b) should do it.  shared_ptr has an implicit conversion to bool (sort
of).

> -----Original Message-----
> From: TEA Hartmann, Steven [mailto:SHartmann_at_[hidden]]
> Sent: Wednesday, December 11, 2002 11:02 AM
> To: boost-users_at_[hidden]
> Subject: [Boost-Users] testing if shared_ptr has been assigned
> 
> 
> 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?
> }
> 	
> 
> Best Regards,
> 
> Steve
> 
> 
> [Non-text portions of this message have been removed]
> 
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