Comments for OxyCo

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Snapshot — Fri, 20 Jun 2008 12:46:00 +0000

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Comment on TextMate blogging & the Objective C book intro by Alex

Alex — Wed, 25 Apr 2007 13:36:06 +0000

Thank You

Comment on Creating a Calculator Class by bobbyRicky

bobbyRicky — Thu, 22 Feb 2007 08:12:11 +0000

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Comment on TextMate blogging & the Objective C book intro by Caius Durling

Caius Durling — Mon, 15 Jan 2007 14:37:34 +0000

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Comment on Creating a Calculator Class by atma

atma — Fri, 24 Nov 2006 14:09:53 +0000

I didn’t knew the differences thank you for the enlightment I’ll keep that in mind. For now I do mostly exercises that the book shows.

I’m dealing with general purpose concepts. However the main idea is to be able to write cocoa applications sooner of later.. so your tips are very useful.

Comment on Creating a Calculator Class by cosmix

cosmix — Fri, 24 Nov 2006 13:51:46 +0000

Ah, you were using ‘pure’ Objective-C. Apologies, I was referring to Cocoa (or at least Foundation). You see, even with simple command line tools, it’s a good idea to leverage the features provided by the Foundation classes.

You won’t find release and dealloc in the ‘pure’ objc runtime, as they are part of NSObject. At some point you will essentially be forced to import at least Foundation to do any sort of meaningful work. I’d suggest you spend some time familiarising yourself with NSObject, as opposed to the pure ObjC ‘Object’ as you probably won’t be using the latter too much.

Comment on Creating a Calculator Class by atma

atma — Fri, 24 Nov 2006 11:58:27 +0000

Hello there Cosmix!

Actually the #import was naked because completelly missing html tags, I didn’t notice that the < and > characters needed special html tags to be displayed.

Now compiles at least via command line:

OSX atma ~ $ file calculator.m
calculator.m: ASCII C program text
OSX atma ~ $ gcc calculator.m -o calculator -l objc
OSX atma ~ $ ./calculator
The result is 50
OSX atma ~ $

As for [calc free], I’ve read in the manual that it’s the a way to release the allocated & initialized memory. I didn’t knew that there is another way to do it and I don’t have a clue about the differences. I’ll try out the [object release]; method asap!

Thnx for the tips

Comment on Creating a Calculator Class by cosmix

cosmix — Thu, 23 Nov 2006 21:07:10 +0000

Hmmm. I don't think what you have there actually compiles, let alone runs without errors, at least on Apple's implementation of Objective-C. What kind of compiler/libraries did you use for this? And for which version of Objective-C? For starters while you're extending Object. NextStep/Cocoa defines NSObject. Then you do [calc free]. The correct way to release an object is by [object release], or --- this is not recommended --- [object dealloc]. Perhaps you were thinking of C? Good to see more people coding in Objective-C. Good luck.