at:tutorial:objects
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at:tutorial:objects [2007/06/27 12:04] – jorge | at:tutorial:objects [2007/06/27 14:09] – jorge | ||
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< | < | ||
- | > def initialPoint | + | > def aPoint |
>>< | >>< | ||
</ | </ | ||
- | Every object understands the message new, which creates a clone (a shallow copy) of the receiver object and initializes the clone by invoking its init method with the arguments that were passed to new. Hence, the init method plays the role of “constructor” for AmbientTalk objects. AmbientTalk’s object instantiation protocol closely corresponds to class instantiation in class-based languages, except that the new object is a clone of an existing object, rather than an empty object allocated from a class. | + | Every object understands the message |
===== Sending messages ===== | ===== Sending messages ===== | ||
- | In AmbientTalk, | + | In AmbientTalk, |
+ | |||
+ | Object' | ||
+ | |||
+ | < | ||
+ | > aPoint.x | ||
+ | >>2 | ||
+ | > aPoint.sumOfSquares() | ||
+ | >> | ||
+ | </ | ||
+ | |||
+ | <note important> | ||
+ | AmbientTalk supports both traditional canonical syntax (e.g. '' | ||
+ | </ | ||
===== Cloning and instantiation ===== | ===== Cloning and instantiation ===== |
at/tutorial/objects.txt · Last modified: 2013/05/17 20:23 by tvcutsem