this is an example of where I use many constraints all at once.. I like the visual format language b/c it provides a nice summary of things without being too verbose.. obviously addConstraintFormats is a method I created.. but that's besides the point

gistfile1.m

    [self.overallContainerView addConstraintFormats:@[[NSString stringWithFormat:@"V:[overallContainer(>=%f)]",overallContainerHeight],
                                                      [NSString stringWithFormat:@"V:[iconsContainer]-%f-|",(imageSize.height+ kLargePadding*2)],
                                                      @"V:[selectedContainer(==35)]-0-|",
                                                      @"|-10-[selectedContainer(>=300)]",
                                                      @"V:[tagWrapper(==tagButton+10)]-35-|",
                                                      @"[tagWrapper(==tagButton+30))]",
                                                      ]
     
                                    withBindingDict:@{@"overallContainer":_overallContainerView,
                                                      @"iconsContainer":_iconsContainerView,
                                                      @"selectedContainer":selectedFoldersContainerView,
                                                      @"tagWrapper":tagWrapper,
                                                      @"tagButton":_tagButton}
                                         isAnimated:YES];