boost Shared_pointer NULL

Question

I'm using reset() as a default value for my shared_pointer (equivalent to a NULL).

But how do I check if the shared_pointer is NULL?

Will this return the right value ?

boost::shared_ptr<Blah> blah; blah.reset() if (blah == NULL)  {     //Does this check if the object was reset() ? } 

Answer 1

Use:

if (!blah) {     //This checks if the object was reset() or never initialized } 

Answer 2

if blah == NULL will work fine. Some people would prefer it over testing as a bool (if !blah) because it's more explicit. Others prefer the latter because it's shorter.