at:tutorial:objects
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at:tutorial:objects [2007/07/02 13:12] – jorge | at:tutorial:objects [2007/07/02 13:29] – jorge | ||
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===== First-class delegation ===== | ===== First-class delegation ===== | ||
- | AmbientTalk provides an explicit delegation operator '' | + | AmbientTalk provides an explicit delegation operator '' |
< | < | ||
- | > def Point3D | + | > def point3D |
def z := 0; | def z := 0; | ||
- | def init(anX, aY, aZ) { | + | def init(aX, aY, aZ) { |
- | super^init(anX, aY); | + | super^init(aX, aY); |
z := aZ; | z := aZ; | ||
- | } | + | }; |
} | } | ||
</ | </ | ||
+ | |||
+ | A message sent to an object using this symbol (e.g. to the parent object in the example above) will first look for the method that matches the selector indicated in the message in this object (and its parents) and then execute the method body in the lexical scope of the message sender. | ||
===== Encapsulation ===== | ===== Encapsulation ===== |
at/tutorial/objects.txt · Last modified: 2013/05/17 20:23 by tvcutsem