相关疑难解决方法(0)

我在NSDictionary类别中有以下方法,可以进行深层复制,工作正常.

我刚从Xcode 4.1升级到4.2,Analyze函数为此代码提供了两个分析器警告,如下所示:

- (id)deepCopy;
{
    id dict = [[NSMutableDictionary alloc] init];
    id copy;

    for (id key in self)
    {
        id object = [self objectForKey:key];

        if ([object respondsToSelector:@selector(deepCopy)])
            copy = [object deepCopy];
        else
            copy = [object copy];

        [dict setObject:copy forKey:key];

        // Both -deepCopy and -copy retain the object, and so does -setObject:forKey:, so need to -release:
        [copy release];  // Xcode 4.2's Analyze says this is an incorrect decrement of the reference count?!
    }

    return dict;  // Xcode 4.2's Analyze says …