Re: @try @catch
Re: @try @catch
- Subject: Re: @try @catch
- From: Michael Watson <email@hidden>
- Date: Thu, 14 Aug 2008 14:38:22 -0400
Don't forget that many of Apple's own methods return nil on failure
and don't implement an NSError reference mechanism. NSFileManager's -
contentsAtPath: method returns either an NSData object on success or
nil on failure.
--
m-s
On 14 Aug, 2008, at 08:45, Uli Kusterer wrote:
On 14.08.2008, at 12:58, Georg Seifert wrote:
is it recommended to use @try .. @catch blocks as flow control like
it is used in Python. They say explicitly to use it rather than do
a lot of test before just try if it works to look after it only if
it fails.
Apple's stance on exceptions so far has been that, with the
exception of some proxy objects (e.g. Distributed Objects), they
should be used in Cocoa for programming errors only. Otherwise,
you're supposed to return a BOOL, or an NSError, e.g. via a
reference parameter, if more detailed failure info is needed.
Whether I consider that good or bad, it's what Apple recommend.
Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://www.zathras.de
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
@bungie.org
This email sent to email@hidden
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden