Re: [boost] [unnullable_ptr] Proposal for a new library

From: Lance.Diduck_at_[hidden]
Date: 2008-07-22 10:44:18

How is this different than a reference?? 

-----Original Message-----
From: Thorsten Ottosen [mailto:thorsten.ottosen_at_[hidden]] 
Sent: Tuesday, July 22, 2008 7:31 AM
To: boost_at_[hidden]
Subject: Re: [boost] [unnullable_ptr] Proposal for a new library

Mathias Gaunard skrev:
> Angel Tsankov wrote:
>> Is there any interest in a class template which acts like a pointer 
>> and guarantees at compile time and at no CPU or memory cost (except 
>> when a call to any of its methods is not inlined) that the pointer is
not null?
> 
> Preventing empty or invalid cases is always good.
> For example I think it's a shame Boost.Function, Boost.Any and the 
> Boost Smart Pointers don't do it.
> 
> As for forcing a pointer to not be empty, I suppose you're talking of 
> making overloads of constructor and operator= for `int' and make them 
> generate errors?

That seems like a nice idea that I will think about applying to
Boost.PtrContainer.

-Thorsten

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