Objective-C ±âÃÊ

0. ½ÃÀÛÇϱâ Àü¿¡

1) MacOS X¿¡¼­ÀÇ °³¹ß¿¡ ´ëÇÑ °³¿ä

2) Áø½Ç°ú °ÅÁþ¸»

3) Objective-C

4) °³¹ßȯ°æ ±¸Ãà

1. Objective-C ÀÇ Æ¯Â¡

¡Ü Dynamic Typing

¡Ü Message ±â¹Ý

	[receiver message]

	[myCircle display];

	[myCircle setOrigin:30.0 :50.0];

	[myRect setWidth:10.0 height:15.0];

	[receiver makeGroup:group, memberOne, memberTwo, memberThree];

	BOOL isFilled;
	isFilled = [myRect isFilled];

	[myRect setPrimaryColor:[otherRect primaryColor]];

	myRect->setPrimaryColor(otherRect->primaryColor());

	myRect->primaryColor()->getRed();

	[[myRect primaryColor] red];

¡Ü Polymorphism

¡Ü Dynamic Binding

¡Ü Class

¡Ü Inheritance

¡Ü ÀνºÅϽº º¯¼öÀÇ »ó¼Ó

¡Ü ¸Þ¼ÒµåÀÇ »ó¼Ó

¡Ü ¸Þ¼ÒµåÀÇ overriding

¡Ü NSObject Class

¡Ü Abstract Classes

¡Ü Class Types

	int i = sizeof(Rectangle);

¡Ü Static Typing

	Rectangle* rect;

¡Ü Type Introspection

¡Ü Class Objects

	Circle* c = [Circle new];
	Class circleClass = [c class];

¡Ü Metaclass Objects

¡Ü ÀνºÅϽº »ý¼º

	id myCircle;
	myCircle = [Circle alloc];

	myCircle = [[Circle alloc] init];

¡Ü Ŭ·¡½º ¿ÀºêÁ§Æ®¸¦ ÀÌ¿ëÇÑ »ç¿ëÀÚÈ­

¡Ü º¯¼ö¿Í Ŭ·¡½º ¿ÀºêÁ§Æ®

¡Ü Ŭ·¡½º ¿ÀºêÁ§Æ®ÀÇ ÃʱâÈ­

¡Ü ¼Ò½ºÄڵ忡¼­ÀÇ Å¬·¡½º À̸§

	Circle *anObject;
	anObject = [[Circle alloc] init];

	if ( [anObject isKindOfClass:[Circle class]] )
			:

	char *aBuffer;
		:
	if ( [anObject isKindOf:objc_lookUpClass(aBuffer)] )
		:

2. Ŭ·¡½º Á¤ÀÇ

1) interface

@interface ClassName : ItsSuperClass
{
	instance variable declarations
}

methods declarations

@end

	float xPosition;
	float yPosition;
	NSColor *color;

@interface Worker : NSObject
{
	char *name;
@private
	int age;
	char *evaluation;
@protected
	id job;
	float wage;
@public
	id boss;
}

+ alloc;
- (void)display;

- (int)count;
- (void)setCount:(int)aCount;

2) importing the interface

#import "ItsSuperClass.h"

@interface ClassName : ItsSuperClass
{
	instance variable declarations
}

methods declarations

@end

3) ´Ù¸¥ Ŭ·¡½ºÀÇ ÂüÁ¶

1. import Áö½ÃÀÚ¸¦ »ç¿ëÇϸé NSObjectºÎÅÍ ¿¬°üµÈ ¸ðµç ÀÎÅÍÆäÀ̽º ÆÄÀϵéÀÌ Æ÷ÇÔµÇ°Ô µÈ´Ù. ¸¸ÀÏ ÀÌ °èÅë¿¡ ÇØ´çµÇÁö ¾Ê´Â Ŭ·¡½º¸¦ »ç¿ëÇÏ°í ÀÖ´Ù¸é ÀÓÆ÷Æ®¸¦ ÇØÁְųª @class Áö½ÃÀÚ¸¦ »ç¿ëÇØ¾ß ÇÑ´Ù.

	@class Rectangle, Circle;

4) implementation

#import "ClassName.h"

@implementation ClassName
method definitions
@end

+ (id)alloc
{
	...
}

- (BOOL)isFilled
{
	...
}

- (void)setFilled:(BOOL)flag
{
	...
}

#import <stdarg.h>

...

- (id)getGroup:group, ...
{
	va_list ap;
	va_start(ap, group);
	...
}

5) ÀνºÅϽº º¯¼öÀÇ »ç¿ë

3. ¸Þ½ÃÁöÀÇ ÀÛµ¿ ¹æ½Ä

	[receiver message]

	objc_msgSend(receiver, selector)

	objc_msgSend(receiver, selector, arg1, arg2, ...)

1) Selectors

	SEL setWidth;
	setWidth = @selector(setWidth:);

	setWidth = sel_getUid(aBuffer);

	char *methodName;
	methodName = sel_getName(setWidth);

2) self, super

	[self setValue:10.0];

	- (id)initWithFrame:(NSRect)frameRect
	{
	    self = [super initWithFrame:frameRect];
	    if ( self ) {
		...
	    }
	    return self;
	}

	+ (id)newRectOfColor:(NSColor *)aColor
	{
		self = [[self alloc] init];
		[self setPrimaryColor:aColor];
		return self;
	}

	+ (id)newRectOfColor:(NSColor *)aColor
	{
		id newInstance = [[self alloc] init];
		[newInstance setPrimaryColor:aColor];
		return newInstance;
	}

	
         newInstance->value = aValue;

Link to this Page

• Objective-C last edited on 9 May 2006 at 1:40 pm by 210.217.95.227