Re: switch case - to require the break statements seems strange to me

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On Fri, 2008-09-12 at 11:47 -0400, Eric Gorr wrote:
> On Sep 12, 2008, at 11:39 AM, Andrew Ballard wrote:
> 
> > On Fri, Sep 12, 2008 at 9:52 AM, Jochem Maas <jochem@xxxxxxxxxxxxx>  
> > wrote:
> >> Luke schreef:
> >>>
> >>> I wonder if this is a shared trait between C and PHP (since I  
> >>> understand
> >>> PHP
> >>> is written in C) that the break; and the default: are placed for  
> >>> good
> >>> practice in all switch statements since they prevent memory leaks?
> >>
> >> default is not required, never heard it was good practice to always  
> >> put it
> >> in.
> >
> > I can't say I've ever heard it recommended as good practice from the
> > standpoint of performance in any specific language I've ever worked
> > with, but I have heard people suggest that you always include an
> > explicit default case in any kind of branching logic. It does seem
> > useless to say
> >
> >    default:  // do nothing
> >                break;
> >
> > in a switch block, but I imagine the reasoning behind it is so that
> > anyone who reads your code can see that you actually thought about
> > what should/would happen if none of the other conditions were true
> > rather than ignoring those conditions.
> 
> It is always useful for a 'default:' case, which would normally do  
> nothing, to include some debug-only code so you can be notified if the  
> default case is ever hit. Whenever I see an empty or just missing  
> 'default:' case, I always cringe.

Whenever I see pointless debug fluff just for the sake of not having an
empty or omitted default statement I cry.

*begins weeping*

Cheers,
Rob.
-- 
http://www.interjinn.com
Application and Templating Framework for PHP


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