Design Patterns Summer Course 2009-2010 - Session#3
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The document discusses implementing the Singleton pattern and Abstract Factory pattern to address new requirements in a project. It includes an agenda that covers meeting the Singleton and Abstract Factory patterns, trying different implementations to address new requirements around image loading and styles, identifying code smells, and next steps around related patterns. The document provides examples and discusses ensuring a class only has one instance, global access, categorizing images, and combining patterns.
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Intelligence shows Russia is on a cyber rampage, leveraging FSB, SVR, and GRU resources to professionally target Ukraines critical infrastructures, military, and international diplomacy support efforts.
The number of total incidents against Ukraine, originating from Russia, has steadily increased from 1350 in 2021 to 4315 in 2024, but the number of actual critical incidents has been managed down from a high of 1048 in 2022 to a mere 59 in 2024showcasing how the rapid detection and response to cyberattacks has been impacted by Ukraines improved cyber resilience.
Even against a much larger adversary, Ukraine is showcasing outstanding cybersecurity, enabled by strong strategies and sound tactics. There are lessons to learn for any enterprise that could potentially be targeted by aggressive nation states.
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fixed-speed air conditioners, DC inverter systems operate with variable-speed compressors that
modulate cooling output based on demand, significantly reducing energy consumption and
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These systems are critical in reducing electricity usage, lowering greenhouse gas emissions, and
promoting eco-friendly technologies in residential and commercial sectors. With advancements in
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Delivering solutions to Azure may involve a variety of architecture patterns involving your applications, APIs data and associated Azure resources that comprise the solution. This session will use reference architectures to illustrate the security considerations to protect your Azure resources and data, how to achieve Zero Trust, and why it matters. Topics covered will include specific security recommendations for types Azure resources and related network security practices. The goal is to give you a breadth of understanding as to typical security requirements to meet compliance and security controls in an enterprise solution."Database isolation: how we deal with hundreds of direct connections to the d...
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Design Patterns Summer Course 2009-2010 - Session#3
- 1. Lets break the ice.Lecture # 3Ahmed SafwatMuhamadHeshamAbdelrahman Al-Ogail
- 2. AgendaYou can solve it yourself!Meet Singleton pattern.Call for a new requirement.First try for implementation.Bad smell code.Whos our hero?
- 3. Agenda (cont)Meet todays pattern.Break!!Second try for implementation.Common uses.Whats next?
- 4. Whats a design pattern?A design pattern is:Set of class(es).Interact together.In UML (class diagram).Informal
- 5. Lets solve it ourselvesHow do we ensure that a class has only one instance and that the instance is easily accessible?UniqueGlobal Access
- 6. SingletonFormalThe Singleton assures that there is one and only one instance of a class, and provides a global point of access to itMake sure that there can be one and only one instance of a class
- 7. Singleton
- 8. Our Current StatusWhat have we did till now?
- 9. Call for New RequirementEach level can be in one of two styles:PharonicAztecFirst level is Aztec.Second and third level is Pharonic.
- 10. First Try Implementation1. We need find where we decide which image we load.2. Categorize images to 2 sets, Pharonic an Aztec.
- 11. Our Code Smells BadEach time we add a new theme we add piles of if-elsestatements.Our class do more than its job (SCSR).
- 14. My Restaurant DrinksWater BottleCoke softOrange softLemon soft
- 15. Whos our hero?So, what we can call it?
- 16. Lets Google it!
- 17. Break
- 19. Meet Abstract FactoryLemon softCoke soft
- 20. Second Try for ImplementationJust Code It
- 21. Common Uses
- 22. Whats Next?Consequences of Factory Pattern.Factory Method Pattern.Implement Factory Pattern using Prototype Pattern.