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Re: Terminology - RAII vs. Scope Guard vs...?

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On Wednesday, April 11, 2012 5:10:39 PM UTC+1, Noah Roberts wrote:
> On Apr 10, 2:36 pm, Joshua Maurice <joshuamaur...@gmail.com> wrote:
> > On Apr 10, 1:47 pm, Noah Roberts <roberts.n...@gmail.com> wrote:

> > > So RAII is when you make it so that the acquisition of a resource is
> > > tied to the initialization of a scope-based variable that cleans up
> > > said resource when it's destroyed.

I'd have skipped the "scope-based" bit

> > RAII is more than that. It's the way of coding in which you ensure
> > that all resources
> > 1- have an owner whose destructor will free the resource, or
> > 2- be on the stack (or a global or some other "root" of the ownership
> > tree).
> >
> > In other words, RAII is the way of coding in which at every step of
> > the program, if you have a resource that needs to be freed, you can
> > identify an object whose destructor will free it, or the resource is
> > an object on the stack (or a global, etc.).

sounds a good defintion

> > This all assumes, of course, that you have a cycle-free ownership
> > graph. This works amazingly well for almost all cases. Sure, you can
> > invent some corner cases where this ownership tree approach isn't a
> > good option, but that's beside the point. RAII is the default for
> > writing good code.
> >
> > Scope Guards are mere utility classes to help facilitate writing in
> > the RAII style.

yes

> Well, I'd disagree with you on that and so does most if not all of the
> documentation on the subject; 

I think you're reading that documentation in an odd manner

> all that I've seen at any rate.  It is
> true that using the RAII idiom as policy is a good policy decision, at
> least in my opinion (not everyone's),

who disagrees?

> but it's still an idiom rather
> than a philosophy. 

what's the difference between and idiom, a policy and a philosophy. You threw the "philosophy" in no one had mentioned it up to now.

> It can form a part of a philosophic framework though.

it guides my moral decisions?

> http://en.wikipedia.org/wiki/Resource_Acquisition_Is_Initialization

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Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-10 13:47 -0700
  Re: Terminology - RAII vs. Scope Guard vs...? Joshua Maurice <joshuamaurice@gmail.com> - 2012-04-10 14:36 -0700
    Re: Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-11 09:10 -0700
      Re: Terminology - RAII vs. Scope Guard vs...? Joshua Maurice <joshuamaurice@gmail.com> - 2012-04-11 12:28 -0700
        Re: Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-11 13:29 -0700
          Re: Terminology - RAII vs. Scope Guard vs...? Rui Maciel <rui.maciel@gmail.com> - 2012-04-12 02:29 +0100
          Re: Terminology - RAII vs. Scope Guard vs...? Joshua Maurice <joshuamaurice@gmail.com> - 2012-04-12 14:31 -0700
            Re: Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-12 16:48 -0700
              Re: Terminology - RAII vs. Scope Guard vs...? "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-04-13 02:34 +0200
                Re: Terminology - RAII vs. Scope Guard vs...? Miles Bader <miles@gnu.org> - 2012-04-13 10:57 +0900
                Re: Terminology - RAII vs. Scope Guard vs...? "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-04-13 09:52 +0200
                Re: Terminology - RAII vs. Scope Guard vs...? Rui Maciel <rui.maciel@gmail.com> - 2012-04-13 10:48 +0100
                Re: Terminology - RAII vs. Scope Guard vs...? Miles Bader <miles@gnu.org> - 2012-04-13 22:18 +0900
                Re: Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-13 09:21 -0700
        Re: Terminology - RAII vs. Scope Guard vs...? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-04-11 21:36 +0000
          Re: Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-11 16:07 -0700
            Re: Terminology - RAII vs. Scope Guard vs...? Juha Nieminen <nospam@thanks.invalid> - 2012-04-12 06:10 +0000
              Re: Terminology - RAII vs. Scope Guard vs...? Gareth Owen <gwowen@gmail.com> - 2012-04-12 18:18 +0100
                Re: Terminology - RAII vs. Scope Guard vs...? Juha Nieminen <nospam@thanks.invalid> - 2012-04-13 04:52 +0000
                Re: Terminology - RAII vs. Scope Guard vs...? Gareth Owen <gwowen@gmail.com> - 2012-04-13 06:59 +0100
                Never using free() or realloc().  Destroying heaps.  @Jeff-Relf.Me - 2012-04-13 00:55 -0700
      Re: Terminology - RAII vs. Scope Guard vs...? Rui Maciel <rui.maciel@gmail.com> - 2012-04-11 21:28 +0100
        Re: Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-11 13:40 -0700
          Re: Terminology - RAII vs. Scope Guard vs...? Rui Maciel <rui.maciel@gmail.com> - 2012-04-12 02:27 +0100
            Re: Terminology - RAII vs. Scope Guard vs...? scott@slp53.sl.home (Scott Lurndal) - 2012-04-12 17:25 +0000
              Re: Terminology - RAII vs. Scope Guard vs...? Gareth Owen <gwowen@gmail.com> - 2012-04-12 19:21 +0100
            Re: Terminology - RAII vs. Scope Guard vs...? Noah Roberts <roberts.noah@gmail.com> - 2012-04-12 16:38 -0700
              Re: Terminology - RAII vs. Scope Guard vs...? Rui Maciel <rui.maciel@gmail.com> - 2012-04-13 11:02 +0100
          Re: Terminology - RAII vs. Scope Guard vs...? nick_keighley_nospam@hotmail.com - 2012-04-13 00:29 -0700
      Re: Terminology - RAII vs. Scope Guard vs...? nick_keighley_nospam@hotmail.com - 2012-04-13 00:14 -0700

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