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b_observer.mq5 (14.3 KB) 조회

Subjects update observers through interface.
Subjects knows nothing about the observers (one-to-many weak relation).
New data can be broadcast by the subject, or requested by the observers (better).
Order of notification is not guaranteed.

RULE: Use weak connection between communicating objects.

Encapsulating a family of interchangeable algorythms which can be modified independently from the client.

A way of sub-classing more functional objects, dynamically.

Rma MACD

Provides an interface for creating families of related or dependent objects without specifying their concrete class.

Programming Patterns - Observer - MetaTrader 5용 스크립트