Expression result unused for gamecenter

Question

    static GCHelper *sharedHelper =nil;
    + (GCHelper *) sharedInstance
    {
         @synchronized ([GCHelper class])
    {
            If (!shareHelper)
    {
            [[self alloc] init];
    }
       return nil;
    }

I have it to run gamecenter but it gives me an error of "expression result unused" how do i fix this

Answer 1

You're not actually assigning the result of [[self alloc] init] to shareHelper , which you almost certainly mean to do. This warning is pointing out your mistake.