Re: File Extensions Problem
Re: File Extensions Problem
- Subject: Re: File Extensions Problem
- From: "Sherm Pendley" <email@hidden>
- Date: Fri, 22 Aug 2008 12:27:46 -0400
On Fri, Aug 22, 2008 at 11:39 AM, Andrew Merenbach
<email@hidden> wrote:
>
> To build on this, doesn't fast enumeration (Leopard-only, of course) raise
> an exception if a value is modified while the enumeration is running? (Not
> tested personally by me, but building upon an earlier thread from a little
> while back.)
I would assume that Bad Things would happen in that case, based on my
understanding of how fast enumeration is implemented. It gathers and
returns a C array of pointers to the values in the collection, which
can then be enumerated with simple pointer arithmetic. Changing the
original collection object would leave the C array out of sync with
it, leading to Bad Things happening - maybe an exception, maybe a
crash, I don't know, but definitely nothing good.
sherm--
--
Cocoa programming in Perl: http://camelbones.sourceforge.net
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