On or about 11/30/09 11:33 AM, thus spake "David Duncan" <david.dun...@apple.com>:
> Your modifying an array that is being enumerated, which is illegal. I thought of that, of course, but I doubted that could be the reason, because I changed the code to look like this: NSArray* arr = [NSArray arrayWithArray: myview.layer.sublayers]; for (CALayer* sub in arr) [sub removeFromSuperlayer]; and I still got the same crash. Enumerating thru arr with objectAtIndex: causes no problem; it's the fast enumeration that's troublesome. m. > On Nov 30, 2009, at 2:23 PM, Matt Neuburg <m...@tidbits.com> wrote: > >> To remove all sublayers from a layer, it is sufficient to set that >> layer's >> sublayers property to nil, so this code is completely unnecessary. >> But I'm >> just curious as to why it doesn't work: >> >> for (CALayer* sub in myview.layer.sublayers) >> [sub removeFromSuperlayer]; >> >> This crashes as if the fast enumeration itself were somehow illegal. >> Why? >> Thx - -- matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/ pantes anthropoi tou eidenai oregontai phusei Among the 2007 MacTech Top 25, http://tinyurl.com/2rh4pf AppleScript: the Definitive Guide, 2nd edition http://www.tidbits.com/matt/default.html#applescriptthings Take Control of Exploring & Customizing Snow Leopard http://tinyurl.com/kufyy8 RubyFrontier! http://www.apeth.com/RubyFrontierDocs/default.html TidBITS, Mac news and reviews since 1990, http://www.tidbits.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
