setString: 徹底更換 字符串 a 的內容
- (void)viewDidLoad
{
NSMutableString *a = [[NSMutableString alloc] initWithString:@"123456798"];
NSLog(@" \n a: %@ \n",a);
[a setString:@"I wanna go home"];
NSLog(@" \n a: %@ \n",a);
[a release];
}
2011-07-05 21:10:59.843 Q[9122:207] a: 123456798
2011-07-05 21:10:59.844 Q[9122:207] a: I wanna go home