Boost logo

Boost :

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


Visit our website at

This message contains confidential information and is intended only
for the individual named. If you are not the named addressee you
should not disseminate, distribute or copy this e-mail. Please
notify the sender immediately by e-mail if you have received this
e-mail by mistake and delete this e-mail from your system.
E-mails are not encrypted and cannot be guaranteed to be secure or
error-free as information could be intercepted, corrupted, lost,
destroyed, arrive late or incomplete, or contain viruses. The sender
therefore does not accept liability for any errors or omissions in the
contents of this message which arise as a result of e-mail transmission.
If verification is required please request a hard-copy version. This
message is provided for informational purposes and should not be
construed as a solicitation or offer to buy or sell any securities
or related financial instruments.

Boost list run by bdawes at, gregod at, cpdaniel at, john at