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Point of view
All features
deferred class OBSERVER [O_ -> OBSERVABLE]
Summary
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The "Observer" Design Pattern. An Observer must be updated by an Observable (see the class OBSERVABLE in the lib/abilities cluster).
Direct parents
Insert list: ANY
Overview
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Features
{OBSERVABLE}
  • update (o: O_)
    The observable object o wants Current to be updated
update (o: O_)
deferred procedure
{OBSERVABLE}
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The observable object o wants Current to be updated
require
  • o /= Void