dolfin team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

On Tuesday February 1 2011 13:18:54 Anders Logg wrote:
> What is the correct way to check whether a shared_ptr is NULL?

What with:

 bool has_child() const
 {
   return _child.count()!=0;
 }

or just or implement a constructor for Hierarchical which initialize the 
shared_ptr to 0?

Johan

> The following seems to return true for a pointer that hasn't been
> initialized:
> 
> bool has_child() const
> {
>   return _child != 0;
> }
> 
> (in Hierarchical.h)
> 
> --
> Anders
> 
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