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at:tutorial:objects

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In this section, we explain how the object-oriented programming paradigm is implemented in AmbientTalk.

Objects, fields and methods

In AmbientTalk, objects are not instantiated from classes. Rather, they are either created ex-nihilo or by cloning and adapting existing objects, like prototypes in the SELF programming language. The definition of such a prototypical object contains a number of fields and methods that represent the object's state and behaviour respectively.

The following code illustrates the ex-nihilo creation of an object:

> def point := object: { def x := 0; def y := 0; def sumofsquares() { x*x + y*y }; }
>><object:439658>

Sending messages

In AmbientTalk, computation is expressed in terms of object sending messages to one another.

Cloning and instantiation

Delegation and Dynamic Inheritance

Delegation and cloning

First-class Delegation

Encapsulation

at/tutorial/objects.1182936840.txt.gz · Last modified: 2007/06/27 11:34 (external edit)