Block with Parameter

- (void) shrinkFrame {
    void (^myBlock)(float);
    myBlock = ^(float scale) {
        CGRect frame;
        frame = self.frame;
        frame.size.width /= scale;
        frame.size.height /= scale;
        self.frame = frame; 
    };
    
    [self animateBlock:myBlock];
}

- (void) animateBlock:(void ( ^ )( float ))theBlock {
    [UIView beginAnimations:nil context:nil];
    theBlock(2.0);
    [UIView commitAnimations];
}