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Re: PDD 2, vtables

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From:
Dan Sugalski
Date:
February 7, 2001 08:05
Subject:
Re: PDD 2, vtables
Message ID:
5.0.2.1.0.20010207110341.02198ea0@24.8.96.48
At 04:02 PM 2/7/2001 +0000, David Mitchell wrote:
> > >Please see my previous post on the subject. As I pointed there, 
> implementing
> > >|| and && like that breaks short-circuits.
> >
> > No, it doesn't. Just because you pass in two PMCs doesn't mean that they
> > both need to be evaluated. Though the PDD does need to be clearer about 
> how
> > that happens.
>
>Hmmm, I can't quite how that trick works. How whould the following get
>evaluated:
>
>$opened || open(F, ...)

The second PMC would point to a lazy list, so it wouldn't be evaluated 
unless its value gets fetched.

					Dan

--------------------------------------"it's like this"-------------------
Dan Sugalski                          even samurai
dan@sidhe.org                         have teddy bears and even
                                      teddy bears get drunk
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