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Re: Syntactic sugar
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Re: Syntactic sugar


  • Subject: Re: Syntactic sugar
  • From: "Keith Ray" <email@hidden>
  • Date: Tue, 5 Sep 2006 10:09:15 -0700

I wonder why the macros are not redefined to use @try etc. when the compiler
is set to enable that syntax.

On 9/4/06, Chris Hanson <email@hidden> wrote:

On Sep 4, 2006, at 9:59 PM, Andrew Farmer wrote:

> * The Cocoa headers define a set of macros (NS_DURING et al) which
>   implement exception handling. However, they're now superseded by the
>   @synchronized keyword.

The old exception-handling macros are superseded by @try, @catch, and
@finally (as well as @throw), not @synchronized.  @synchronized is
functionality that didn't exist under the old exception-handling
mechanism.  All of the above were introduced in Mac OS X 10.3 Panther.

The old exception-handling macros also required extra work on the
part of developers to declare variables volatile, use the correct
return macros, etc. that use of the @try, @catch, and @finally
constructs will take care of for you since they're supported by the
compiler.

   -- Chris

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--

C. Keith Ray
<http://homepage.mac.com/keithray/blog/index.html>
<http://homepage.mac.com/keithray/xpminifaq.html>
<http://homepage.mac.com/keithray/resume2.html>
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  • Follow-Ups:
    • Re: Syntactic sugar
      • From: "Sean McBride" <email@hidden>
    • Re: Syntactic sugar
      • From: John Stiles <email@hidden>
References: 
 >Syntactic sugar (From: CoLo0LoGo <email@hidden>)
 >Re: Syntactic sugar (From: Andrew Farmer <email@hidden>)
 >Re: Syntactic sugar (From: Chris Hanson <email@hidden>)

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