RFStore

[fangshufeng]

- (void)unsubscribe {
    id object = self.object;
    if (object) {
        @synchronized(object) {
            NSPointerArray *listeners = objc_getAssociatedObject(object, kListernersKey);
            NSInteger index = 0;
            for (RFSubscription *subscription in listeners) {
                if (subscription == self) {
                    break;
                }
                ++index;
            }
            [listeners removePointerAtIndex:index];
        }
    }
}

@end

这里这样写好像多次调用改方法会闪退

做了以下修改 希望作者review下

- (void)unsubscribe {
    id object = self.object;
    if (object) {
        @synchronized(object) {
            NSPointerArray *listeners = objc_getAssociatedObject(object, kListernersKey);
            NSInteger index = -1;
            for (int i = 0; i < listeners.count; i++) {
                RFSubscription *subscription = [listeners pointerAtIndex:i];
                if (subscription == self) {
                    index = i;
                    break;
                }
            }
            if (index == -1) {
                return;
            }
            [listeners removePointerAtIndex:index];
        }
        }
}

[Zepo]

多次 unsubscribe 是有问题，可以这样改