Observer pattern
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The document discusses the observer pattern, which defines a one-to-many dependency between objects so that when one object changes state, all its dependent objects are notified automatically. The observer pattern is applicable when an object's change requires changing other objects without knowing how many need changing, or when an object should notify others without knowing who they are. It provides advantages like eliminating dependencies, increasing extensibility, and improving testability. The .NET framework uses the pattern in MVC through events and delegates.
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What is C# programming language?
C# (C Sharp) is a multi-paradigm, general-purpose programming language. C# programming language encompasses the programming disciplines of static typing, strong typing, lexically scoped, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented.
What is C# application?
C# is a popular programming language for creating desktop applications, web applications, and web services. It is widely used in the development of Microsoft applications on a large scale. C# is also used in Unity game development.
Net framework is a ground-breaking platform that allows you to create the following types of applications:
Applications for Windows
Web-based applications
Web-based services
Net framework applications are cross-platform in nature.
✅What is C# Programming?
C# is a modern, object-oriented, general-purpose programming language that is pronounced "C sharp." It was created inside the.Net project by Microsoft, led by Anders Hejlsberg and his team, and was authorised by the European Computer Manufacturers Association (ECMA) and the International Standards Organization (ISO). C# is one of the languages supported by the Common Language Infrastructure, and the current version is 7.2. C# is syntactically similar to Java and is simple for users who are familiar with C, C++, or Java.
To know about C++ programming, visit: https://www.simplilearn.com/c-plus-plus-programming-for-beginners-article
Android Dagger 2
Basic Concepts towards understanding of Dagger-2 in android.
Native android development made easy by google dagger libraries. Easy way to understand basic concepts of Dagger and android mobile app development libraries.
Automate Design Patterns
The document discusses various design patterns including Decorator, Proxy, Prototype, Observer, Adapter, Builder, Dependency Injection, Singleton, Memento, and Factory. For each pattern, it provides a high-level overview of how to implement the pattern programmatically, focusing on using annotations, reflection, and code generation to automate the application of the patterns. It describes generating proxy classes, intercepting method calls, deep cloning objects, notifying subscribers of changes, resolving dependencies, ensuring single instances, and other techniques.
PresentationPatterns_v2
This document provides an overview of object-oriented design patterns, including classifications of patterns and descriptions of common patterns. It discusses creational, structural, and behavioral patterns. Specific patterns covered include Observer, Singleton, Builder, Chain of Responsibility, Proxy, Decorator, Template Method, and Service Locator. Diagrams and code examples are provided to illustrate many of the patterns. The conclusion emphasizes that design patterns can improve code quality but require practice to apply effectively.
Behavioral pattern By:-Priyanka Pradhan
Behavioral design patterns describe communication between objects. They include interpreter, iterator, mediator, observer, state, chain of responsibility, command, and template patterns. Interpreter represents grammar as class hierarchies. Iterator provides sequential access to aggregate objects. Mediator avoids direct references between dependent objects. Observer notifies objects of state changes. State encapsulates an object's behavior based on its internal state. Chain of responsibility links objects to handle requests. Command captures operations flexibly. Template expresses basic algorithms with variable steps.
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Community
Community involvement can help build a career by providing up-to-date information and problem solving, introducing different perspectives, and allowing one to meet new friends and talent hunters for potential recognition and help becoming a more skilled engineer. Specifically, the DotNetters Microsoft technical community allows volunteer contributions and is a platform for .NET enthusiasts, with activities like engaging industry experts, building a professional network, aiding career development, and self-improvement.
Cloud friendly Enterprise Architecture
The document discusses key aspects of software architecture including that it bridges business and technical requirements by considering users, infrastructure, and business goals. It outlines different types of architectures like user experience, information, and platform-dependent architectures. The document also lists important design factors like user empowerment and flexibility. It provides tips for cloud architecture like assuming failures, designing for change, and considering scalability limits. Finally, it shares some recommended reading on architecture.
Interactive SDLC
An interactive session to explain production process of software development build from scratch.
Presented on DotNetters Tech Summit - 2015 RUET
Presenter: Shahriar Iqbal Chowdhury,
Ronald Roni Saha,
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An basic ideas about needs and concepts of business intelligence.
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Big Data
Concept of Big Data in the context of real world data scenario.
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Cloud Computing
Concept of Clod Computing in the context of real world application development.
Presented on DotNetters Tech Summit - 2015 RUET
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Event Url: https://www.facebook.com/events/512834685530439/
Version control
Concept and need of version control and the uses in production implementation.
Presented on DotNetters Tech Summit - 2015 RUET
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Node JS
Node.js is a JavaScript runtime environment that allows JavaScript to be used for server-side scripting. It uses non-blocking I/O and event-driven architecture, allowing it to handle multiple concurrent connections efficiently. Some key features of Node.js include asynchronous I/O, an event-driven model, callbacks, and the npm package manager. While Node.js has advantages like scalability, it is single-threaded and lacks standard libraries, making it best suited for real-time applications like chat and games rather than CPU-intensive tasks.
Application development gadget & gears
Application development tools needed for development in the context of present development trends.
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SPA
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Design Pattern that every cloud developer must know
This document discusses design patterns that are useful for cloud-hosted applications. It outlines 24 common patterns organized into 8 categories related to availability, data management, design and implementation, messaging, monitoring, performance, resiliency, and security. The document focuses on the cache-aside and static content hosting patterns for data services, and the retry and materialized view patterns. It provides brief descriptions of when and how to use each pattern with examples of implementing them on the Azure cloud platform.
Strategy Pattern
The document discusses the strategy pattern, which allows selecting algorithms or behaviors at runtime. It defines a family of algorithms, encapsulates each one, and makes them interchangeable. The strategy pattern is useful when wanting to choose algorithms dynamically, like for sorting or file compression. It keeps classes focused on a single purpose by extracting conditional logic into strategy objects. The document provides examples of how the strategy pattern can be implemented and used, such as for a robot identifying different objects or relationships.
Adapter Design Pattern
The Adapter pattern allows classes to work together that normally could not because of incompatible interfaces. It converts the interface of a class into another interface that a client expects. Adapters are used to make existing classes work with others without modifying their code by acting as a bridge between incompatible interfaces. Some examples include data adapters that allow different data sources to work with datasets and .NET using runtime callable wrappers as adapters between .NET code and COM objects.
Factory method pattern
The Factory Method Pattern allows subclasses to determine which object to create by overriding a factory method, providing flexibility in object creation. It defines an interface for creating objects but lets subclasses decide which class to instantiate. This pattern is useful when the class that creates the object is different than the class that knows which object is required or when subclasses need to specify the objects that will be created. The document provides an example of applying the Factory Method Pattern to a banking account management system to create different account objects based on configuration parameters while avoiding violations of the Open/Closed Principle.
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DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
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Observer pattern
- 1. Observer Pattern Shahriar Iqbal Chowdhury & Monjurul Habib Code Name: Remington http://www.facebook.com/groups/netter/
- 2. Observer Defined • He's a silent guardian. A watchful protector. A Dark Knight.
- 3. Pattern States Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically
- 4. Applicability • When an abstraction has two aspects, one dependent on the other. Encapsulating these aspects in separate objects lets you vary and reuse them independently. • When a change to one object requires changing others, and you don't know how many objects need to be changed. • When an object should be able to notify other objects without making assumptions about who these objects are. In other words, you don't want these objects tightly coupled.
- 5. Observer @ Gotham City
- 6. Example (Notify on Withdrawal)
- 7. Subject
- 9. Observer
- 11. Invoke
- 12. Advantages 1. Eliminates dependencies 2. Increases extensibility 3. Improves testability
- 13. Observer & .NET framework • Model View Controller Pattern - The observer pattern is used in the model view controller (MVC) architectural pattern. In MVC the this pattern is used to decouple the model from the view. View represents the Observer and the model is the Observable object. • The introduction of delegates and events provides a new and powerful means of implementing the Observer pattern