mirror of
https://github.com/adambard/learnxinyminutes-docs.git
synced 2024-12-24 10:01:38 +00:00
[FIX] filename
This commit is contained in:
parent
4283f0c964
commit
6d48842ce9
@ -1,99 +0,0 @@
|
|||||||
---
|
|
||||||
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)
|
|
Loading…
Reference in New Issue
Block a user