Download Objective-C Quick Syntax Reference by Matthew Campbell PDF

By Matthew Campbell

The Objective-C fast Syntax Reference is a condensed code and syntax connection with the preferred Objective-C programming language, that is the center language in the back of the APIs present in the Apple iOS and Mac OS SDKs. It offers the fundamental Objective-C syntax in a well-organized structure that may be used as a convenient reference.

You won’t locate any technical jargon, bloated samples, drawn out background classes, or witty tales during this ebook. What you'll find is a language reference that's concise, to the purpose and hugely obtainable. The e-book is jam-packed with important info and is a must have for any Objective-C programmer.

In the Objective-C quickly Syntax Reference, you are going to find:
* A concise connection with the Objective-C language syntax.
* brief, uncomplicated, and centred code examples.
* A good laid out desk of contents and a accomplished index permitting effortless overview.

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Then create a new NSNumber object with the NSNumberFormatter numberFromString: message. numberStyle = NSNumberFormatterSpellOutStyle; NSNumber *num5 = [formatter numberFromString:@"two point two five"]; 28 CHAPTER 8 Arrays NSArray NSArray is a class used to organize objects in lists. NSArray can maintain an index of objects, search for objects, and enumerate through the list. Enumeration is the process of moving through a list one item at a time and performing an action on each item in the list.

Weak The property will be set to nil when the destination object is deallocated. assign The property will simply use assignment (used with primitive types). Copy The property returns a copy and must implement the NSCopying protocol. retain A retain message will be sent in the setter method. nonatomic Specifies the property is not atomic (not locked while being accessed). The next two parts of the property forward declaration are the datatype and the name of the property. You can read this forward declaration as defining a property name of type NSString that Project will have a strong relationship with.

You need to do two important tasks when defining a class: code an interface and code an implementation. Class Interfaces You use a class interface to specify the name of the class and the properties and methods that make up the class. h> @interface Project : NSObject @end The line of the code that begins with the #import imports the Foundation framework. This framework is needed whenever you want to work with Objective-C classes like NSObject or NSString (which you almost always do). In particular, you need to reference NSObject since that will be your base class.

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