anchor.diff:        if isGiven(entryValue) # ignore undefined/null, like SQL would do
           totalValue += entryValue
       totalValue
  -
  -  ###**
  -  Returns whether the given element is a descendant of the `<body>` element.
  -
  -  @function up.util.isBodyDescendant
  -  @internal
  -  ###
  -  isBodyDescendant = (element) ->
  -    $(element).parents('body').length > 0
   
     isBasicObjectProperty = (k) ->
       Object.prototype.hasOwnProperty(k)
  
positive.code:       'right'
  
    ###**
    Like `$old.replaceWith($new)`, but keeps event handlers bound to `$old`.
  
    Note that this is a memory leak unless you re-attach `$old` to the DOM aferwards.
  
    @function up.util.detachWith
    @internal
    ###
    detachWith = ($old, $new) ->
      $insertion = $('<div></div>')
      $insertion.insertAfter($old)
      $old.detach()
      $insertion.replaceWith($new)
      $old
  
    ###**
    Hides the given element faster than `jQuery.fn.hide()`.
  
    @function up.util.hide
  
negative.code:   # parsePath: parsePath
    evalOption: evalOption
    horizontalScreenHalf: horizontalScreenHalf
    flatten: flatten
    isTruthy: isTruthy
    isSingletonElement: isSingletonElement
  