Boost Users :
From: Noah Roberts (roberts.noah_at_[hidden])
Date: 2008-05-16 11:49:44
Kevin Martin wrote:
> I have just discovered to my delight that you can use shared_ptr with
> a null deleter to pass around stack based objects. This is great
> because a function shouldn't care whether a parameter passed to it is
> on the heap or stack. So I can write general functions to accept a
> shared_ptr and if I have to pass a stack based object I can just pass
> a null deleter.
You can do a lot more than that! Consider the case of a handle of some
sort that you need to return to a service when you are done. Case in
point, in order to get rid of an sqlite database connection pointer you
call db_close(), NOT delete.
No big deal, just use db_close as your deleter!
The fact that you can use anything as a deleter for a shared_ptr turns
it into a hammer with a driver head. So then everything IS effectively
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