Objective-C 2.0
GUI
iPhone
12-B-1

(C)2009 T. Ogihara

✦
✦
✦
(C)2009 T. Ogihara

NeXTstep
Objective-C

(C)2009 T. Ogihara

NeXTstep
(C)2009 T. Ogihara

NeXTstep
(C)2009 T. Ogihara

Objective-C
C
Smalltalk
ANSI C

C++
C
(C)2009 T. Ogihara

Objective-C
 1983 Brad Cox Stepstone
 NeXT (1988 )
 1996 Apple NeXT
 Mac OS X 2000
 Objective-C 2.0 2007
 iPhone 2007
(C)2009 T. Ogihara

C++ C
C C++ C++

C
C
C
(C)2009 T. Ogihara

Objective-C C
C Objective-C


C
Objective-C
(C)2009 T. Ogihara

OO (1)


Mixin

 Java Objective-
C

(C)2009 T. Ogihara

OO (2)
 C++
::


 C#

(C)2009 T. Ogihara

OO (3)

(int )

(C)2009 T. Ogihara

Objective-C 2.0
 Apple



1.0


(C)2009 T. Ogihara

(1)
id obj; /* */
[ obj msg ]
(C)2009 T. Ogihara

(2)
[ obj msg:100 ]
[ obj msg:100 param: N+1 ]
r = [ obj msg:15 ];
(C)2009 T. Ogihara

@interface :
{
;
...
}
;
...
@end
(C)2009 T. Ogihara

@implementation
- (id)initWithName:(NSString *)str
{
C
...
}
...
@end
C
(C)2009 T. Ogihara


 virtual, final C++,
Java, C#

(C)2009 T. Ogihara

 Mac OS X
 Mac OS X 10.5 (Leopard)
 OS X iPhone
(C)2009 T. Ogihara



@selector( )

(C)2009 T. Ogihara

[obj show];
[obj performSelector:@selector(show)];
SEL s = @selector(show);
[obj performSelector: s];
(C)2009 T. Ogihara

-
 Cocoa

 GUI Cocoa
(C)2009 T. Ogihara

-



show:
(C)2009 T. Ogihara

 Objective-C

NSObject
(C)2009 T. Ogihara

Carbon
Cocoa
JDK
BSD
Quick
Time
Mac OS X OS X iPhone
(C)2009 T. Ogihara


GUI


(C)2009 T. Ogihara

(C)2009 T. Ogihara

(C)2009 T. Ogihara

iPhone
-

 Foundation
 AppKit → UIKit
API Core

Foundation
C

(C)2009 T. Ogihara