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authorYannick Loriot <yannick.loriot@gmail.com>2013-08-13 14:32:57 +0200
committerYannick Loriot <yannick.loriot@gmail.com>2013-08-13 14:32:57 +0200
commit6d48842ce96919774e468093e7460ef9779ab341 (patch)
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----
-language: Objectiv-C
-author: Eugene Yagrushkin
-author_url: www.about.me/yagrushkin
-filename: learnc.Objectiv-C
----
-
-Objective-C is the main programming language used by Apple for the OS X and iOS operating systems and their respective APIs, Cocoa and Cocoa Touch.
-It's is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language.
-
-```Objective-C
-// Single-line comments start with //
-
-/*
-Multi-line comments look like this.
-*/
-
-##Basic types
-// all the primitive variable types are the same as in C
-// char, int, long, double, float
-
-
-// Simple, common classes
-// number
-NSNumber *firstNumber = @1;
-NSNumber *secondNumber = @23.0;
-NSNumber *boolNumber = @YES;
-
-// string
-NSString *aString = @"some string";
-
-// array
-NSArray *array = @[ @1, @2];
-
-// dictionary
-NSDictionay *dictionary = @{ @"aKey" : @"aValue", @"aKey2" : @"aValue2" };
-
-// Import headers with #import
-#import <UIKit/UIKit.h>
-#import "SomeAppDelegate.h"
-
-##Coding classes
-
-// Declare your class in a header(.h) file:
-
-@interface UserObject : NSObject{
-// instance variables
-}
-
-// Class method
- + (NSString*) ClassMethod;
-
-// Instance method
- - (NSString*) instanceMethodWithParmeter:(NSString*)string;
-
-@end
-
-// Add class methods in an implementation (.m) file:
-
-@implementation UserObject
-
-+ (NSString*) ClassMethod{
- return @"SomeString";
-}
-
-- (NSString*) instanceMethodWithParmeter:(NSString*)string;
-{
- return @"New string";
-}
-
-- (NSString*) otherMethodWithString:(NSString*)string;
-{
- return [NSString stringWithString:string];
-}
-@end
-
-// Create an object instance by allocating memory and initializing it. An object is not fully functional until both steps have been completed.
-UserObject *someObject = [[UserObject alloc] init];
-
-##Calling Methods
-
-// The Objective-C model of object-oriented programming is based on message passing to object instances.
-// In Objective-C one does not simply call a method; one sends a message.
-
-[someObject instanceMethodWithParmeter:@"Steve Jobs"];
-
-##Nested Messages
-// nested messages look like this:
-
-[someObject instanceMethodWithParmeter:[someObject otherMethodWithString:@"Jony Ive"]];
-
-```
-## Further Reading
-
-[Wikipedia Objective-C](http://en.wikipedia.org/wiki/Objective-C)
-
-[Objectively Speaking: A Crash Course in Objective-C](http://www.raywenderlich.com/12444/objectively-speaking-a-crash-course-in-objective-c)
-
-[iOS For High School Students: Getting Started](http://www.raywenderlich.com/5600/ios-for-high-school-students-getting-started)