Example of how I would do https://code.stypi.com/clifton/Objective-C/reusable.m if I were going to do it essentially the same way. In response to https://twitter.com/cliftonite/status/348133150880317440

Reusable.m

- (void)makeGraphPopup:(NSString *)popupName {
  
  /*
  I want to pass a string (popupName) into this method and use it dynamically 
  for object names just like popupName.to_sym in Ruby.
  
  Below you can see where I've insert {popupName} and how it would append itself
  to various object names which are IBOutlets
  */
  
  NSString *responseUrl = [[request URL] absoluteString];
  NSArray *urlPieces = [responseUrl componentsSeparatedByString:@"{popupName}://"];
  NSString *url = [urlPieces componentsJoinedByString:@""];
  
  //Parse the values coming from the webview URL
  NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
  for (NSString *param in [url componentsSeparatedByString:@"&"]) {
    NSArray *elts = [param componentsSeparatedByString:@"="];
    if([elts count] < 2) continue;
    [params setObject:[elts objectAtIndex:1] forKey:[elts objectAtIndex:0]];
  }
  
  NSString *graphPopupKey = [NSString stringWithFormat:@"%@GraphPopup", popupName];
  NSString *graphDurationLabelKey = [NSString stringWithFormat:@"%@GraphDurationLabel", popupName];
  NSString *graphLabelLabelKey = [NSString stringWithFormat:@"%@GraphLabelLabel", popupName];
  NSString *graphPopupArrowKey = [NSString stringWithFormat:@"%@GraphPopupArrow", popupName];
  UIView /*I don't know what the type for this actually is*/ *graphPopup = [self valueForKey:graphPopupKey];
  UILabel *graphDurationLabel = [self valueForKey:graphDurationLabelKey];
  UILabel *graphLabelLabel = [self valueForKey:graphLabelLabelKey];
  UIView *graphPopupArrow = [self valueForKey:graphPopupArrowKey];

  //Set and show the graph popup
  graphDurationLabel.text = [params objectForKey:@"hrs"];
  graphLabelLabel.text = [params objectForKey:@"date"];
  graphPopup.hidden = NO;
  
  //Animate into place
  int currentX = [[params objectForKey:@"xPos"] intValue];
  int currentY = [[params objectForKey:@"yPos"] intValue];
  
  if(currentX < 50){ // [-][ ][ ]
    //Set the left edge of the popup
    currentX = 0;
    //Move the pointer arrow on the popup
    CGRect popupFrame = graphPopupArrow.frame;
    popupFrame.origin.x = 22;
    graphPopupArrow.frame = popupFrame;
  }else if(currentX > 214){ // [ ][ ][-]
    //Set the left edge of the popup
    currentX = 214;
    //Move the pointer arrow on the popup
    CGRect popupFrame = graphPopupArrow.frame;
    popupFrame.origin.x = 68;
    graphPopupArrow.frame = popupFrame;
  }else{ // [ ][-][ ]
    //Set the left edge of the popup
    currentX -= 42;
    //Move the pointer arrow on the popup
    CGRect popupFrame = graphPopupArrow.frame;
    popupFrame.origin.x = 44;
    graphPopupArrow.frame = popupFrame;
  }
  
  //Set the position via animation
  CGRect popupFrame = CGRectMake(currentX,currentY+120,106,87);
  
  [UIView beginAnimations:nil context:nil];
  [UIView setAnimationDuration:0.5];
  [UIView setAnimationDelay:0.0];
  [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
  
  graphPopup.frame = popupFrame;
  
  [UIView commitAnimations];

}