Re: [boost] Proposed new RAII Library

Subject: Re: [boost] Proposed new RAII Library
From: Sohail Somani (sohail_at_[hidden])
Date: 2012-09-14 14:41:27

On 14/09/2012 2:24 PM, Andrew Sandoval wrote:
>
>> >
>> >On 14/09/2012 11:12 AM, Andrey Semashev wrote:
>>> > >    typedef raii< HANDLE, &CloseHandle > auto_handle;
>>> > >
>>> > >    class my_class
>>> > >    {
>>> > >      auto_handle m_h;
>>> > >    };
>>> > >
>>> > >This doesn't look like a part of Boost.ScopeExit anymore.
>> >
>> >I could make a car into an airplane and it's not a car anymore.
>> >
>> >This is quite clever but limited.
>> >
> How so?  I use my RAII class like that all of the time, and it does exactly what
> is needed.  It guarantees I'll never forget to put the CloseHandle into the
> destructor.  In fact, most of the time it means I don't need destructors anymore.

Oh, it's limited because you can't include any state in the deallocation:

   void youLikeThis(bool doYou,Handle h);

   boost::scope_guard OMGANAME(youLikeThis,true,handle);

Not possible if everything is encoded in the type.

Sohail