empty

• constant

  • The word empty is a constant whose value is "" — an empty string containing no characters. In SenseTalk, empty is used a lot. It is the value that is usually returned any time there is no value to return from a function or expression. For example, these expressions will all result in an empty value: +

     character 9 of "hello"

     item 6 of (1,3,5,9)

     property "age" of (name:"Fred", occupation:"Zookeeper")

• keyword

  • an empty list
  • an empty object
  • an empty property list
  • new empty object