Re: [boost] [scope_guard] New revision available + naming consideration

From: David Abrahams (dave_at_[hidden])
Date: 2005-09-21 20:38:22

Ariel Badichi <abadichi_at_[hidden]> writes:

> David Abrahams wrote:
>>>>it's easy to arrange that only a literal zero works there.
>>>
>>>How?
>> 
>> 
>> Allow assignment only from a private member pointer type.  It's
>> similar to the operator safe_bool idiom.
>
> I thought you might mean that. That allows more than a literal zero, 
> though (e.g., 5 * 5 - 25). 

Yikes!  I  didn't know that.  Too bad!

> By the way, that might work well for smart 
> pointers; why don't shared_ptr and friends use this idiom?

Maybe because it allows more than a literal zero?

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com