Decorator

Programming Patterns – Decorator – script MetaTrader 5

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Programming Patterns - Decorator - script for MetaTrader 5
 • Inheritance is not always flexible.  • Composition and delegation is sometimes a good alternative to dynamically add new behavior.  • Decorator type matches component type.  • Decorators change component behavior without changing the component code.  • A component may have arbitrary number of decorators.  • Decorators are transparent to the client, unless the client … Read more

Decorator – structural design pattern – library MetaTrader 5

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Decorator - structural design pattern - library for MetaTrader 5
//+——————————————————————+ //|                                                    Decorator.mqh | //|                                    2019-2020, dimitri pecheritsa | //|                                                 792112@gmail.com | //+——————————————————————+ //| decorator < structural design pattern                            | //+——————————————————————+ //   design patterns: elements of reusable object-oriented software //   gof > erich gamma, richard helm, ralph johnson, john vlissides //   published in 1994 //+——————————————————————+ //| intent                                                           | //+——————————————————————+ //   attach — additional responsibilities — to an object … Read more