#import <Foundation/Foundation.h>
typedef struct{
int x;
int y;
}TRPoint;
typedef struct{
char ch;
double d;
}TRMyData;
int main(int argc, const char * argv[]){
@autoreleasepool{
TRPoint p;
p.x = 10;
p.y = 15;
NSLog(@"%d%d",p.x,p.y); // 1015
NSValue * value = [NSValue valueWithBytes:&p objCType:@encode(TRPoint)];//封装
NSLog(@"%@",value); // <0a000000 0f000000>
TRPoint p1;
[value getValue:&p1]; //拆封
NSLog(@"(%d,%d)", p1.x, p1.y); // (10,15)
TRMyData dara = {'a', 3.14};
NSValue * md = [NSValue valueWithBytes:&data objCType:@encode(TRMyData)];
TRMyData data1;
[mdgetValue:&data1];
}
return 0;
}
网友评论