title: How to Uninstall a UIView programmatically
body: <p>In Interface builder the power of size classes lets you install constraints or uninstall them.  In code you can do something similar by toggling the active property.  </p>
  
  <p>Interface Builder also lets you install or uninstall views.  However, I would like to be able to do this programatically.  UIView doesn't appear to have an active property.  Is there any way I can uninstall a view programmatically?  I'm looking for something where I can simply toggle a boolean property and the view and its constraints go into a dormant state and the view is no longer visible ands its constraints are no longer constraining until it is toggled to be non-dormant and then the view and the constraints work again.</p>
  
  <p>Is this possible?  Any workarounds?</p>