Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Objective C 2.0 ÊôÐÔ(Property)

Ô­ÌûÒ»£ºhttp://blog.csdn.net/dotphoenix/archive/2009/05/20/4203075.aspx
Ô­Ìù¶þ£ºhttp://www.cocoachina.com/bbs/read.php?tid-8008.html
@property (²ÎÊý) ÀàÐÍ Ãû×Ö;
ÕâÀïµÄ²ÎÊýÖ÷Òª·ÖΪÈýÀࣺ¶ÁдÊôÐÔ£¨readwrite/readonly£©£¬setterÓïÒ⣨assign/retain/copy£©ÒÔ¼°atomicity£¨nonatomic£©¡£
assign/retain/copy¾ö¶¨ÁËÒÔºÎÖÖ·½Ê½¶ÔÊý¾Ý³ÉÔ±¸³ÓèÐÂÖµ¡£ÎÒÃÇÔÚÉùÃ÷summary properyʱʹÓÃÁËreadonly£¬ËµÃ÷¿Í»§¶ËÖ»ÄܶԸÃproperty½øÐжÁÈ¡¡£atomicityµÄĬÈÏÖµÊÇatomic£¬¶ÁÈ¡º¯ÊýΪԭ×Ó²Ù×÷¡£
ÔÚobjective c 2.0Ï£¬ÓÉÓÚÎÒÃÇÉùÃ÷ÁËproperty£¬implementationÎļþ¿ÉÒÔ¸ü¸ÄÈçÏ£º
¿ÉÒÔ¿´µ½Êý¾Ý³ÉÔ±titleºÍnumofpagesµÄ¶Áдº¯ÊýÒѾ­²»¸´´æÔÚ£¬È¡¶ø´úÖ®µÄÊÇÁ½ÐÐ@synthesize£¬
¼ûÏÂÁÐʾÀý´úÂ룺
 
//test.h
@interface MyTest : NSObject {
int myArray[5];
}
@end
 
Èç¹û²ÉÓÃ
@property int myArray[5];
¿Ï¶¨»á³ö´í¡£
ÒòΪ@propertyµÄÉùÃ÷ָʾ±àÒëÆ÷ĬÈϵظømyArrayÌí¼ÓÁËmyArrayÒÔ¼°setMyArrayµÄÕâÑùÒ»¶ÔgetterºÍsetter·½·¨¡£ÓÉÓÚobjective-CÖз½·¨µÄ·µ»ØÀàÐͲ»ÄÜÊÇÊý×飬ËùÒÔÉÏÊöÉùÃ÷propertyµÄ·½Ê½ÊÇͨ²»¹ý±àÒëµÄ¡£
ÕýÈ·µÄ·½Ê½ÊÇ£º
 
//test.h
@interface MyTest : NSObject {
int myArray[5];
}
- (void)outPutValues;
@property int* myArray;
@end
 
¼´£¬Ê¹ÓÃÖ¸ÕëÀ´±íʾ·µ»ØÀàÐͲ¢×÷Ϊ²ÎÊýÉèÖÃÀàÐÍ¡£
²»¹ýÕâÑùÒ»À´¾ÍÎÞ·¨ÔÚ.mÎļþµÄʵÏÖÖÐʹÓÃ@synthesize£¬¶øÊÇÐèÒªÏÔʽµØÊµÏÖÕâ¶Ô·½·¨£º
 
#import <Foundation/Foundation.h>
#import "test.h"
#include <stdio.h>
 
@implementation MyTest
 
- (int*)myArray
{
return myArray;
}
 
- (void)setMyArray:(int*)anArray
{
if(anArray != NULL)
{
for(int i=0; i<5; i++)
myArray[i] = anArray[i];
}
}
ÕâÑùÒ»À´¶ÔÓÚÊý×éÐͱäÁ¿³ÉÔ±¾ÍÎÞ·¨Ê¹Óõ㣨.£©²Ù×÷·ûÀ´³éÏóµô¶ÔsetterºÍgetterµÄµ÷Óã¨Ê¹Óõã²Ù×÷·û·ÃÎʶÔÏóµÄ³ÉÔ±Êý¾Ý·Ç³£·½±ã£¬
¸ù¾ÝË÷Òª·ÃÎʵÄÊý¾Ý³ÉÔ±´¦ÓÚ×óÖµ»¹ÊÇÓÒÖµ¶øÓɱàÒëÆ÷×Ô¶¯Åж¨µ÷ÓÃsetter»¹ÊÇgetter£©¡£
 


Ïà¹ØÎĵµ£º

C++ÖÐextern ¡°C¡±º¬ÒåÉî²ã̽Ë÷

1.ÒýÑÔ
¡¡¡¡C++ÓïÑԵĴ´½¨³õÖÔÊÇ“a better C”£¬µ«ÊÇÕâ²¢²»Òâζ×ÅC++ÖÐÀàËÆCÓïÑÔµÄÈ«¾Ö±äÁ¿ºÍº¯ÊýËù²ÉÓõıàÒëºÍÁ¬½Ó·½Ê½ÓëCÓïÑÔÍêÈ«Ïàͬ¡£×÷ΪһÖÖÓûÓëC¼æÈݵÄÓïÑÔ£¬C++±£ÁôÁËÒ»²¿·Ö¹ý³ÌʽÓïÑÔµÄÌØµã£¨±»ÊÀÈ˳ÆÎª“²»³¹µ×µØÃæÏò¶ÔÏ󔣩£¬Òò¶øËü¿ÉÒÔ¶¨Òå²»ÊôÓÚÈκÎÀàµÄÈ«¾Ö±äÁ¿ºÍº¯Êý¡£µ«ÊÇ£¬C++±Ï¾ ......

GNU/Linuxƽ̨µÄC³ÌÐò¿ª·¢¼°³ÌÐòÔËÐл·¾³

±¾ÎĽéÉÜÔÚGNU/Linux»·¾³ÏÂÒ»¸öC³ÌÐòÓÉÔ´´úÂëµ½³ÌÐò£¬µ½¼ÓÔØÔËÐУ¬×îºóÖÕÖ¹µÄ¹ý³Ì¡£Í¬Ê±ÒԴ˹ý³ÌÎªÔØÌ壬½éÉÜGNU/Linuxƽ̨ÏÂÈí¼þ¿ª·¢¹¤¾ßµÄʹÓá£
 
±¾ÎÄÒÔÎÒÃÇ×î³£¼ûµÄhello, world!ΪÀý£º
 
#include <stdio.h>
main ()
{
      printf(“hello, world!\n” ......

Linux I2C InputÉ豸Çý¶¯´úÂëµÄ¼¸µãÀí½â

×î½üÔÚ×öÒ»¸öI2C¼üÅ̵ÄLinuxÇý¶¯£¬²Î¿¼ÁËÆäËûоƬµÄһЩ´úÂ룬ÆäÖÐÂ½Ðø·¢ÏÖÓÐЩÈÃÈËÃÔ»óµÄ¶«Î÷£¬°ÑÎÒµÄÃÔ»ó¼°Àí½âÔÚÕâÀï¼ÓÒԼǼ£º
1. i2c_driver½á¹¹ÌåµÄprobe³ÉÔ±µÄÔ­ÐÍ£º
     int (*probe)(struct i2c_client *, const struct i2c_device_id *);
¼´£ºprobeº¯Êý±»µ÷ÓÃʱ»á´ÓÉϱߴ«Á½¸ö¸ö²Î ......

C++ µ÷C Cµ÷c++

Ò»¡¢c++ µ÷C:
/* cÓïÑÔÍ·Îļþ£ºcExample.h */
#ifndef C_EXAMPLE_H
#define C_EXAMPLE_H
#ifdef __cplusplus
extern "C"
{
#endif
int add(int x,int y);
#ifdef __cplusplus
}
#endif
 
#endif
/* cÓïÑÔʵÏÖÎļþ£ºcExample.c */
#include "cExample.h"
int add( int x, int y )
{
 return ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ