at:tutorial:objects
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Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
at:tutorial:objects [2007/06/29 13:27] – jorge | at:tutorial:objects [2007/06/29 14:31] – jorge | ||
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Every object understands the message '' | Every object understands the message '' | ||
- | ===== Delegation and Cloning | + | ===== Delegation and cloning |
- | AmbientTalk features object inheritance or delegation. By means of delegation, an object can reuse and extend the defintion of another establishing a child-parent relationship. We identify two kinds of delegation relationships: | + | AmbientTalk features object inheritance or delegation. By means of delegation, an object can reuse and extend the defintion of another establishing a parent-child |
The following code shows how to extend objects with a **IS-A** relationship. It uses the '' | The following code shows how to extend objects with a **IS-A** relationship. It uses the '' | ||
Line 74: | Line 74: | ||
</ | </ | ||
+ | ===== Delegation and dynamic inheritance ===== | ||
+ | The parent of an object is bound to a field named '' | ||
- | ===== Delegation and Dynamic Inheritance ===== | + | < |
+ | > def OpenConnection := object: {...}; | ||
+ | def ClosedConnection := object: {...}; | ||
+ | def Connection := object: { | ||
+ | def open() { | ||
+ | super := OpenConnection.new(); | ||
+ | }; | ||
+ | def close() { | ||
+ | super := ClosedConnection.new(); | ||
+ | }; | ||
+ | } | ||
+ | </ | ||
===== First-class Delegation ===== | ===== First-class Delegation ===== |
at/tutorial/objects.txt · Last modified: 2013/05/17 20:23 by tvcutsem