Comments for iPhone Development Blog

Comment on iPhone Tutorial by BetaWar – Part 2 by bob

bob — Fri, 25 Feb 2011 06:29:53 +0000

if(myLabel != nil){
[myLabel release];
}

should be written as

[myLabel release];

sending a message to nil has no effect

Comment on Understanding Objective C by Stan Weirather

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Comment on Understanding Objective C by gume

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Comment on Understanding Objective C by Pokerplay.nu

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Comment on iPhone sales up 100% by iPhone Development

iPhone Development — Thu, 16 Dec 2010 10:06:41 +0000

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Comment on iPad Apps can now be submitted by SophieEvie@iphone ipad application development

SophieEvie@iphone ipad application development — Wed, 15 Dec 2010 09:04:23 +0000

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Comment on iPhone Tutorial by BetaWar – Part 2 by iPhone Developer

iPhone Developer — Thu, 23 Sep 2010 07:45:18 +0000

One of the neat & best iPhone dev tutorials!! Good Work.. Please keep writing more tutorials!!

Comment on iPhone OS 4.0 full conference conversation by Tweets that mention iPhone Development Blog » Blog Archive » iPhone OS 4.0 full conference conversation -- Topsy.com

Sat, 10 Apr 2010 00:13:44 +0000

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Comment on iPhone OS 4.0 revealed on 8th April by Tweets that mention iPhone Development Blog » Blog Archive » iPhone OS 4.0 revealed on 8th April -- Topsy.com

Thu, 08 Apr 2010 18:34:53 +0000

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Comment on Sharing Data by using class instances by Matthew Cawley

Matthew Cawley — Sun, 14 Mar 2010 18:14:16 +0000

Hi Scott,

We have to override the default alloc method as the default alloc method will assign a new memory location for the instance every time. This will mean you would end up returning a new instance of the object and the old instance would be left holding valuble resources (including the information you stored in it). You would also have an issue of the old instances taking up memory in the app that you would not be able to release as the pointer will be set to the new instance.

By overriding the alloc method we can tell the app to return the already allocated object instead of creating a new instance (unless one doesn’t already exist). In effect the alloc method stops working as an allocate method and becomes more of a get object method instead

Hope that helps

Matt