From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <e496065adc421ebe21be6fa7892d2639@quanstro.net>
From: erik quanstrom <quanstro@quanstro.net>
Date: Fri,  4 Sep 2009 13:42:24 -0400
To: 9fans@9fans.net
In-Reply-To: <8214DB3A-3368-4B61-B0CD-BAC5F2BE7271@sun.com>
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Subject: Re: [9fans] "Blocks" in C
Topicbox-Message-UUID: 6510bdda-ead5-11e9-9d60-3106f5b1d025

> Where exactly does it say that?
>
> >        dispatch_block_t p;
> >
> > 	if(cond){
> > 		p =^ { print("cond\n"); };
> > 	}else{
> > 		p =^ { print("cond\n"); };
> > 	}
> > 	p();
> >
> > since the first part is equivalent to
> >
> > 	if(cond){
> > 		struct Block _t = ...;
> > 		p = &_t;
> > 	}
>
> I'm pretty sure Apple's compiler is smart enough to allow the
> construct that
> you've just mentioned. In fact, I'd be willing to bet on it. Sadly
> just like about
> anybody else on this thread I don't have an access to Snow Leopard Mac
> OS X
> at the moment. So if there needs to be an experiment run -- that'll
> have to
> wait till next week.

as i believe was originally explained,
i ripped that example *directly* from the apple grand central
documentation on page 37 in the "Data Types" section:

http://developer.apple.com/mac/library/documentation/Performance/Reference/GCD_libdispatch_Ref/GCD_libdispatch_Ref.pdf

maybe you don't believe the documentation?

- erik