程序员教你如何用代码创建一个 女朋友

马上就要回家过年了,身为伟大的程序员,过年怎么能不带个妹子回家呢,没有妹子的怎么办?

没关系,我们new一个贝

    NSMutableDictionary *me = [NSMutableDictionary dictionary];    // 从 GirlEntity类 创建一个妹子    GirlEntity *girl1 = [[[GirlEntity alloc] init] autorelease];    girl1.name = @"妹子1";    [me setObject:girl1 forKey:@"girlFriend"];

diaosi说从来没有过妹子,不知道妹子类是什么.

没关系,我们自己造

    // 创建一个NSObject对象, 然后添加属性,把他设置成妹子    NSObject *girl2 = [[[NSObject alloc] init] autorelease];    objc_setAssociatedObject(girl2, "name", @"妹子2", OBJC_ASSOCIATION_COPY);    [me setObject:girl2 forKey:@"girlFriend2"];

屌丝说这样还不够彻底.

没关系,我们自己new一个类出来

// 动态创建一个妹子类,然后创建一个妹子    const char *className = "Girl3";    Class kclass = objc_getClass(className);    if (!kclass)    {        Class superClass = [NSObject class];        kclass = objc_allocateClassPair(superClass, className, 0);    }        NSUInteger size;    NSUInteger alignment;    NSGetSizeAndAlignment("*", &size, &alignment);    class_addIvar(kclass, "name", size, alignment, "*");        // 注册到运行时环境    objc_registerClassPair(kclass);        id girl3 = [[[kclass alloc] init] autorelease];    object_setInstanceVariable(girl3, "name", "妹子3");        [me setObject:girl3 forKey:@"girlFriend3"];

如果想带女神回去怎办?

没关系,我们可以挖墙角

// 挖墙角    GirlEntity *girl4 = [[[GirlEntity alloc] init] autorelease];    girl4.name = @"女神";        SEL original = @selector(talk);    SEL replacement = @selector(talk2);        Method a = class_getInstanceMethod([GirlEntity class], original);    Method b = class_getInstanceMethod([self class], replacement);    if (class_addMethod([GirlEntity class], original, method_getImplementation(b), method_getTypeEncoding(b)))    {        class_replaceMethod([GirlEntity class], replacement, method_getImplementation(a), method_getTypeEncoding(a));    }    else    {        method_exchangeImplementations(a, b);    }        [girl4 talk];-(void) talk2{    NSString *name = [self valueForKey:@"name"];    if ([name isEqualToString:@"女神"]) {        // do 你懂的        NSLog(@"%s", __FUNCTION__);    }}