When to use exception handling?

I'm trying to understand when to use exception handling when developing Cocoa applications. In regard to this, two points stand out to me in Apple's documentation: "exceptions are resource-intensive in Objective-C" "Conditions giving rise to exceptions are due to programming errors; you shoul

Using performSelector:withObject:afterDelay: to call a delegate method?

I want to be able to employ a delegate method after a delay. So what I have done, which works fine, is create a method in my class that calls the delegate method, and then I use performSelector:withObject:afterDelay: to call the second method: [self performSelector:@selector(doSomething00) wit

Re: Using performSelector:withObject:afterDelay: to call a delegate method?

thanks - obvious. Should have caught this on my own:) From: Bill Bumgarner To: Helen Cooper Cc: cocoa-dev@lists.apple.com Sent: Wed, December 30, 2009 12:37:38 PM Subject: Re: Using performSelector:withObject:afterDelay: to call a delegate method? On Dec 30

Creating and employing color constants

I have defined a color palette I want to access routinely as UIColor objects, but I am not convinced I am taking the right approach, particularly in regard to managing memory and minimizing memory used. I have defined a bunch of colors as follows, and am wondering if there is a better way to do