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Showing posts with label Objective C. Show all posts
Showing posts with label Objective C. Show all posts
Sunday, January 5, 2014

Objective C Runtime

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We will discuss how Objective C runtime system works and how we can find information about the objects at the runtime. The language always ...
Sunday, November 24, 2013

Messaging in Objective C

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In Objective C we know that objects send messages. If you do not know about it you can refer to the one of the previous blogs  Object Model...
Tuesday, October 29, 2013

ViewController LifeCycle

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We had previously discussed ViewController in the topic  Introduction to the ViewControllers in iOS  and in that topic we had given an over...
Thursday, October 24, 2013

Introduction to Introspection in Objective C

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This article is intended for understanding of the beginners. You will not see any advance stuff here. I will be giving some basic introduct...
Saturday, October 19, 2013

Introduction to NSAttributedString and NSMutableAttributedString Class

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NSAttributedString This is new in iOS 6. It is really powerful and really useful. Think of NSAttributedString as an NString where each ch...
Friday, October 18, 2013

Introduction to ViewController in iOS

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We follow MVC Pattern for development of iOS Application. Visit  MVC Overview  article on wiki to have a brief introduction to the pattern....
Sunday, October 6, 2013

TypeCasting objects in Objective C

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Type Casting Type Casting a process converting one type of object to another type of object. Every language a semantics of TypeCasting. ...
Thursday, October 3, 2013

Memory Management in Objective C

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In this topic, we will discuss Reference Counting and some other memory management topics related to Objective C. Reference Counting R...
Thursday, September 26, 2013

Common Objective C coding errors

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I am going to introduce the common coding errors made while programming in Objecive C language. 1. Declaring the const char * strings. Ye...

Object Model of Objective C

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Object Model of objective C is derived from SmallTalk. It has its basis in SmallTalk. Few things to know before understanding the Object Mo...
Tuesday, September 24, 2013

IBAction and IBOutlet keywords

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( IBAction )selectedCard:( UIButton *)sender { IBAction is nothing but typedef void. Xcode puts this to keep track that this not a r...
Monday, September 23, 2013

Application Delegate

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Every iOS application must contain an application delegate object. Application Delegate class is responsible for handling all kind of even...
Wednesday, September 11, 2013

Difference between Weak and Strong keywords

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Strong means you want to keep control over the lifetime of the object. If an object is marked as strong mean object remains in the heap unt...
Tuesday, September 10, 2013

What is "id" in Objective C

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id 'id' is a typedef in objective C. This means "Pointer to an Object". This Object can be any object of Objective C. ...
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Monday, September 9, 2013

Pointers in Objective C

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Pointer? A pointer references a location in the memory. In simple words it keeps the address of the memory where actual data is stored. Ob...
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Sunday, September 8, 2013

Introduction to Objective C

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Learning any kind of language starts with learning basics of the programming language. If one needs to understand than I would say he must ...