标签：color nbsp style copy 管理 释放 font bsp size
浅拷贝
char *cstr = "this is a c string"; NSString *str1 = [[NSString alloc] initWithUTF8String:cstr]; NSLog(@"str = %lu", [str1 retainCount]); NSString *str2 = [str1 copy]; NSLog(@"str = %lu", [str1 retainCount]); [str2 release];必须做一次release
必须释放新对象
char *cstr = "this is a c string"; NSString *str1 = [[NSString alloc] initWithUTF8String:cstr]; NSLog(@"str = %lu", [str1 retainCount]); NSMutableString *str2 = [str1 mutableCopy]; NSLog(@"str = %lu", [str1 retainCount]); [str2 release]; // 必须做一次release
[str1 release];
标签：color nbsp style copy 管理 释放 font bsp size
原文地址：http://www.cnblogs.com/xufengyuan/p/6648854.html
