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Subject: Re: [boost] very simple implementation of Andrei Alexandrescu's ScopeGuard idiom
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2012-09-03 13:28:42

Sergey Radionov wrote:
> _execute.h
> based on
> you-write-excepti/184403758?pgno=2
> I know about but
> with boost::bind this can be much simpler:
> I've used this in many of my projects, and found it very
> usefull....
> don't understand, why this simple solution does not
> contributed already to Boost by someone else... :)

I created a version, too, but the usage is much simpler.

Given the following:

FILE * const file(fopen("test", "r"));
if (file)
   // A

Your usage, at A, is:

   finally_execute _(make_fin_exec(boost::bind(fclose, file)));

Mine is:

   scope_guard _(fclose, file);

As you can see, a little more complication in the component makes
usage much simpler.

There's also Boost.Scope Exit, though it's even more verbose:


If there's interest in it, I'd have to seek permission to submit
my library.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer using std::disclaimer;
Dev Tools & Components
Susquehanna International Group, LLP


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