Look over MVC, MVP, MVVM pattern in android.
and introduce android data binding library.
You can follow this with simple project.
https://github.com/withleedh/patternChat
References
https://realm.io/kr/news/eric-maxwell-mvc-mvp-and-mvvm-on-android/
The document provides an overview of the traditional UI development approach and introduces the Model-View-ViewModel (MVVM) architectural pattern. It defines the key components of MVVM - the Model, View, and ViewModel - and describes how they interact through data binding, commands, and notifications. The summary highlights MVVM's separation of concerns, support for independent development and testing of components, and facilitation of UI redevelopment.
The Model View ViewModel (MVVM) is an architectural pattern originated by Microsoft as a specialization of the Presentation Model (Martin Fowler). Similar to MVC, MVVM is suitable for client applications (Xaml-based, Xamarin, SPA, ...) because it facilitates a clear separation between the UI and the Business Logic. Examples with WPF, MvvmCross, AngularJs. It also contains solutions for common use cases.
in these slides i have explained the difference between MVC, MVP and MVVM design patterns. slides includes definition, explanation and then implementation with code examples. it is a comparison oriented presentation.
This document provides an overview of ASP.net MVC, including what MVC is, how ASP.net MVC request execution works, details on controllers, routing, application development, differences from web forms, and when to use MVC. It describes MVC as separating applications into models, views, and controllers, and how ASP.net MVC implements the MVC pattern with controllers handling user input and selecting views. Request processing and controller lifecycles are also summarized at a high level.
The document discusses three design patterns: Singleton, Observer, and Factory. The Singleton pattern ensures that only one instance of a class can exist and provides a global access point. The Observer pattern defines a subscription mechanism so that multiple objects can be notified of changes to an object they are observing. The Factory pattern provides an interface for creating objects but leaves the concrete class unspecified. Real-world examples and implementations of each pattern are provided.
The document provides an overview of ASP.NET MVC, including its core components and how they differ from ASP.NET Web Forms. It discusses Models, Views, Controllers, validation, routing, unit testing, and view engines. Key points covered include MVC separating application logic, control over HTML, testability, and no viewstate or postbacks. Examples are provided for creating controllers and actions, passing data to views, validation, routing, and unit testing.
The document provides an overview of the traditional UI development approach and introduces the Model-View-ViewModel (MVVM) architectural pattern. It defines the key components of MVVM - the Model, View, and ViewModel - and describes how they interact through data binding, commands, and notifications. The summary highlights MVVM's separation of concerns, support for independent development and testing of components, and facilitation of UI redevelopment.
The Model View ViewModel (MVVM) is an architectural pattern originated by Microsoft as a specialization of the Presentation Model (Martin Fowler). Similar to MVC, MVVM is suitable for client applications (Xaml-based, Xamarin, SPA, ...) because it facilitates a clear separation between the UI and the Business Logic. Examples with WPF, MvvmCross, AngularJs. It also contains solutions for common use cases.
in these slides i have explained the difference between MVC, MVP and MVVM design patterns. slides includes definition, explanation and then implementation with code examples. it is a comparison oriented presentation.
This document provides an overview of ASP.net MVC, including what MVC is, how ASP.net MVC request execution works, details on controllers, routing, application development, differences from web forms, and when to use MVC. It describes MVC as separating applications into models, views, and controllers, and how ASP.net MVC implements the MVC pattern with controllers handling user input and selecting views. Request processing and controller lifecycles are also summarized at a high level.
The document discusses three design patterns: Singleton, Observer, and Factory. The Singleton pattern ensures that only one instance of a class can exist and provides a global access point. The Observer pattern defines a subscription mechanism so that multiple objects can be notified of changes to an object they are observing. The Factory pattern provides an interface for creating objects but leaves the concrete class unspecified. Real-world examples and implementations of each pattern are provided.
The document provides an overview of ASP.NET MVC, including its core components and how they differ from ASP.NET Web Forms. It discusses Models, Views, Controllers, validation, routing, unit testing, and view engines. Key points covered include MVC separating application logic, control over HTML, testability, and no viewstate or postbacks. Examples are provided for creating controllers and actions, passing data to views, validation, routing, and unit testing.
This document provides an overview and introduction to design patterns. It discusses creational, structural, and behavioral patterns. For each category it briefly introduces and describes the intent and use of some common patterns, including Factory Method, Singleton, Decorator, Facade, Command, Iterator, and Observer. It also includes diagrams to illustrate the relationships between objects in sample implementations.
MVC (Model-View-Controller) is a software architectural pattern that divides an application into three interconnected parts: the model, the view, and the controller. The model manages the application's data logic and rules. The view displays the data from the model. The controller links the model and view by obtaining input and converting it to commands for the model or preferred views for the user.
ASP.NET MVC is a framework from Microsoft that separates an application's logic, presentation, and data access into three distinct components: models, views, and controllers. This separation of concerns makes the application easier to manage, test, and develop for large teams. ASP.NET MVC uses friendly URLs, does not rely on view state or server-based forms, and supports test-driven development better than traditional ASP.NET Web Forms applications.
AngularJS is an MVC framework for building client-side web applications. It uses two-way data binding between models and views, dependency injection to decouple modules, and directives to extend HTML. Key features include routing for single-page applications, services for reusable logic, and tools for testing AJAX code. AngularJS provides standard directives, services, and routing capabilities to build complete applications in the browser.
The document provides an introduction to ASP.NET MVC architecture. It discusses the key components of MVC - the model, view and controller. The model handles the data and logic, the view displays the UI, and the controller coordinates between them. It also covers MVC conventions like controller and view directories, and compares ASP.NET MVC to Web Forms.
.NET Core is an open source development platform maintained by Microsoft that allows developers to write cross-platform applications using C# and F# that run on Windows, Linux, and macOS. It is not based on .NET Framework or Mono, but is compatible with apps and libraries that target the .NET Standard Library. .NET Core focuses on cloud development and does not support all features of .NET Framework like Windows Forms. ASP.NET Core is also cross-platform and uses a modular package-based approach rather than depending on System.Web.dll. The .NET Core roadmap includes adding support for more platforms and features like WebSockets and SignalR in upcoming releases.
Getting started with the reactjs, basics of reactjs, introduction of reactjs, core concepts of reactjs and comparison with the other libraries/frameworks
A walkthrough the main principles to reach solid NodeJS Applications with TypeScript language, Jest as Test Runner and NestJS as framework for structure.
Hexagonal architecture with Spring Boot [EPAM Java online conference]Mikalai Alimenkou
Nowadays traditional layered monolithic architecture in Java world is not so popular as 5-10 years ago. I remember how we wrote tons of code for each layer repeating almost the same parts for every application. Add unit and integration testing to understand how much time and efforts has been spent on repeatable work. All cool ideas around DDD (domain driven design) and Hexagonal Architecture was just a nice theory because reality hasn’t allow us to implement it easily. Even Dependency Injection with Spring framework was completely focused on traditional layered approach, not even talking about JavaEE platform.
Today we have Spring Boot ecosystem covering most of our needs for integration with almost all possible technologies and microservices architectural trend, enabling completely new approach to build Java applications around domain model. It is so natural to build Java domain-oriented services and connect them with external world using ports and adapters, that Hexagonal Architecture is almost enabled by default. You just need to switch your way of thinking…
This document discusses clean architecture principles for Android applications. It outlines goals of having an architecture that is focused on use cases, easy to maintain and test, and decoupled. It describes layers including entities, use cases, interface adapters, frameworks/drivers, presentation layer, and data layer. It emphasizes separating domains, business rules in their own layer, and testing at different levels. Tools mentioned include dependency injections, Proguard, and Lint.
A service in Android runs in the background without a user interface. It can be started and stopped to perform long-running operations like playing audio. A service is not a separate process or a thread but allows work to be done in the background even when the user is not interacting with the app. The document provides an example service app that runs a background service displaying a notification every 5 seconds until stopped. It demonstrates starting and stopping the service from an activity and handling the service lifecycle through onCreate(), onStart(), and onDestroy() methods.
This document provides information about a course on design patterns taught by Dr. Asma Cherif. It includes the course code, instructor details, learning objectives, textbooks, and topics that will be covered such as architectural design, what patterns are, and different types of patterns. Design patterns provide solutions to common software design problems and promote reuse of successful designs. The course aims to help students understand design patterns, identify patterns in code and designs, and implement patterns to design and develop quality software applications.
Design patterns are reusable solutions to common software design problems. There are three main types of design patterns: creational patterns, which create objects for you rather than having you instantiate them directly; structural patterns, which help compose groups of objects into larger structures; and behavioral patterns, which help define communication between objects. Some common design patterns used in Android development include Model-View-Controller (MVC), Model-View-Presenter (MVP), and Observer. MVC separates an application into three components - the model, the view, and the controller. MVP builds on MVC by introducing a presenter component to separate the application logic and flow from the view components. The Observer pattern allows an object to publish changes to its state
The document provides an overview of building web applications using ASP.NET and .NET Framework. It discusses the key features of ASP.NET like server controls, master pages, themes, data access, security etc. It also covers ASP.NET programming basics, different page models, folder structure and the ASP.NET execution model.
The document discusses the Dependency Inversion Principle (DIP), which states that high-level modules should not depend on low-level modules, both should depend on abstractions. It defines DIP and provides examples of how to implement dependency injection through interface injection, setter injection, and constructor injection. The key benefit of DIP is that it reduces coupling between modules and allows for loose coupling through abstraction.
React is a JavaScript library for building user interfaces. It was created by Facebook and is best for building dynamic websites like chat applications. React uses a virtual DOM for efficiently updating the view after data changes. Components are the building blocks of React and can contain state and props. The document provides an example of a simple component class and demonstrates how to add state and props. It also includes links to example code and MicroPyramid's social media profiles.
This document discusses design patterns, beginning with how they were introduced in architecture in the 1950s and became popularized by the "Gang of Four" researchers. It defines what patterns are and provides examples of different types of patterns (creational, structural, behavioral) along with common patterns in each category. The benefits of patterns are that they enable reuse, improve communication, and ease the transition to object-oriented development. Potential drawbacks are that patterns do not directly lead to code reuse and can be overused. Effective use requires applying patterns strategically rather than recasting all code as patterns.
The document discusses using SQLite as the database for Android applications, including its history, advantages for mobile use, features, architecture, and examples of creating SQLite databases and performing basic CRUD operations in Android code. It provides an overview of SQLite's lightweight and portable design that makes it suitable for embedded systems like mobile devices.
This presentation will guide you through the MVC Pattern and Flex implementation of MVC (Cairgorm and Mate Frameworks)
http://blog.go4flash.com/articles/flex-articles/mvc-pattern-presentation-cairngorm-vs-mate/
The document discusses the Model-View-Controller (MVC) architecture. MVC separates an application into three main components - the model, the view, and the controller. The model manages the application's data and logic, the view displays the model's data to the user, and the controller interprets user input and updates the model and/or view accordingly. MVC provides benefits like separation of concerns, parallel development, and adhering to good engineering principles. It originated in the 1970s and is widely used today in many programming languages and frameworks.
This document provides an overview and introduction to design patterns. It discusses creational, structural, and behavioral patterns. For each category it briefly introduces and describes the intent and use of some common patterns, including Factory Method, Singleton, Decorator, Facade, Command, Iterator, and Observer. It also includes diagrams to illustrate the relationships between objects in sample implementations.
MVC (Model-View-Controller) is a software architectural pattern that divides an application into three interconnected parts: the model, the view, and the controller. The model manages the application's data logic and rules. The view displays the data from the model. The controller links the model and view by obtaining input and converting it to commands for the model or preferred views for the user.
ASP.NET MVC is a framework from Microsoft that separates an application's logic, presentation, and data access into three distinct components: models, views, and controllers. This separation of concerns makes the application easier to manage, test, and develop for large teams. ASP.NET MVC uses friendly URLs, does not rely on view state or server-based forms, and supports test-driven development better than traditional ASP.NET Web Forms applications.
AngularJS is an MVC framework for building client-side web applications. It uses two-way data binding between models and views, dependency injection to decouple modules, and directives to extend HTML. Key features include routing for single-page applications, services for reusable logic, and tools for testing AJAX code. AngularJS provides standard directives, services, and routing capabilities to build complete applications in the browser.
The document provides an introduction to ASP.NET MVC architecture. It discusses the key components of MVC - the model, view and controller. The model handles the data and logic, the view displays the UI, and the controller coordinates between them. It also covers MVC conventions like controller and view directories, and compares ASP.NET MVC to Web Forms.
.NET Core is an open source development platform maintained by Microsoft that allows developers to write cross-platform applications using C# and F# that run on Windows, Linux, and macOS. It is not based on .NET Framework or Mono, but is compatible with apps and libraries that target the .NET Standard Library. .NET Core focuses on cloud development and does not support all features of .NET Framework like Windows Forms. ASP.NET Core is also cross-platform and uses a modular package-based approach rather than depending on System.Web.dll. The .NET Core roadmap includes adding support for more platforms and features like WebSockets and SignalR in upcoming releases.
Getting started with the reactjs, basics of reactjs, introduction of reactjs, core concepts of reactjs and comparison with the other libraries/frameworks
A walkthrough the main principles to reach solid NodeJS Applications with TypeScript language, Jest as Test Runner and NestJS as framework for structure.
Hexagonal architecture with Spring Boot [EPAM Java online conference]Mikalai Alimenkou
Nowadays traditional layered monolithic architecture in Java world is not so popular as 5-10 years ago. I remember how we wrote tons of code for each layer repeating almost the same parts for every application. Add unit and integration testing to understand how much time and efforts has been spent on repeatable work. All cool ideas around DDD (domain driven design) and Hexagonal Architecture was just a nice theory because reality hasn’t allow us to implement it easily. Even Dependency Injection with Spring framework was completely focused on traditional layered approach, not even talking about JavaEE platform.
Today we have Spring Boot ecosystem covering most of our needs for integration with almost all possible technologies and microservices architectural trend, enabling completely new approach to build Java applications around domain model. It is so natural to build Java domain-oriented services and connect them with external world using ports and adapters, that Hexagonal Architecture is almost enabled by default. You just need to switch your way of thinking…
This document discusses clean architecture principles for Android applications. It outlines goals of having an architecture that is focused on use cases, easy to maintain and test, and decoupled. It describes layers including entities, use cases, interface adapters, frameworks/drivers, presentation layer, and data layer. It emphasizes separating domains, business rules in their own layer, and testing at different levels. Tools mentioned include dependency injections, Proguard, and Lint.
A service in Android runs in the background without a user interface. It can be started and stopped to perform long-running operations like playing audio. A service is not a separate process or a thread but allows work to be done in the background even when the user is not interacting with the app. The document provides an example service app that runs a background service displaying a notification every 5 seconds until stopped. It demonstrates starting and stopping the service from an activity and handling the service lifecycle through onCreate(), onStart(), and onDestroy() methods.
This document provides information about a course on design patterns taught by Dr. Asma Cherif. It includes the course code, instructor details, learning objectives, textbooks, and topics that will be covered such as architectural design, what patterns are, and different types of patterns. Design patterns provide solutions to common software design problems and promote reuse of successful designs. The course aims to help students understand design patterns, identify patterns in code and designs, and implement patterns to design and develop quality software applications.
Design patterns are reusable solutions to common software design problems. There are three main types of design patterns: creational patterns, which create objects for you rather than having you instantiate them directly; structural patterns, which help compose groups of objects into larger structures; and behavioral patterns, which help define communication between objects. Some common design patterns used in Android development include Model-View-Controller (MVC), Model-View-Presenter (MVP), and Observer. MVC separates an application into three components - the model, the view, and the controller. MVP builds on MVC by introducing a presenter component to separate the application logic and flow from the view components. The Observer pattern allows an object to publish changes to its state
The document provides an overview of building web applications using ASP.NET and .NET Framework. It discusses the key features of ASP.NET like server controls, master pages, themes, data access, security etc. It also covers ASP.NET programming basics, different page models, folder structure and the ASP.NET execution model.
The document discusses the Dependency Inversion Principle (DIP), which states that high-level modules should not depend on low-level modules, both should depend on abstractions. It defines DIP and provides examples of how to implement dependency injection through interface injection, setter injection, and constructor injection. The key benefit of DIP is that it reduces coupling between modules and allows for loose coupling through abstraction.
React is a JavaScript library for building user interfaces. It was created by Facebook and is best for building dynamic websites like chat applications. React uses a virtual DOM for efficiently updating the view after data changes. Components are the building blocks of React and can contain state and props. The document provides an example of a simple component class and demonstrates how to add state and props. It also includes links to example code and MicroPyramid's social media profiles.
This document discusses design patterns, beginning with how they were introduced in architecture in the 1950s and became popularized by the "Gang of Four" researchers. It defines what patterns are and provides examples of different types of patterns (creational, structural, behavioral) along with common patterns in each category. The benefits of patterns are that they enable reuse, improve communication, and ease the transition to object-oriented development. Potential drawbacks are that patterns do not directly lead to code reuse and can be overused. Effective use requires applying patterns strategically rather than recasting all code as patterns.
The document discusses using SQLite as the database for Android applications, including its history, advantages for mobile use, features, architecture, and examples of creating SQLite databases and performing basic CRUD operations in Android code. It provides an overview of SQLite's lightweight and portable design that makes it suitable for embedded systems like mobile devices.
This presentation will guide you through the MVC Pattern and Flex implementation of MVC (Cairgorm and Mate Frameworks)
http://blog.go4flash.com/articles/flex-articles/mvc-pattern-presentation-cairngorm-vs-mate/
The document discusses the Model-View-Controller (MVC) architecture. MVC separates an application into three main components - the model, the view, and the controller. The model manages the application's data and logic, the view displays the model's data to the user, and the controller interprets user input and updates the model and/or view accordingly. MVC provides benefits like separation of concerns, parallel development, and adhering to good engineering principles. It originated in the 1970s and is widely used today in many programming languages and frameworks.
The document provides an overview of the Model-View-Controller (MVC) design pattern, including its context, problem, and solution. It then discusses how MVC is used in the Java Pet Store example application to separate the application logic and data (Model) from the user interface (View) and control logic (Controller). Key aspects of MVC like separation of concerns and allowing multiple Views of the same data are highlighted.
SoftServe - "ASP.NET MVC як наступний крок у розвитку технології розробки Web...SoftServe
This document provides an overview of ASP.NET MVC, including its history and key concepts. It describes the MVC pattern and how ASP.NET MVC implements this pattern. It also discusses ASP.NET MVC's project structure, controllers, actions, views, routing and other core features. Finally, it compares ASP.NET MVC to traditional ASP.NET Web Forms and outlines some benefits and disadvantages of the MVC framework.
This document discusses the Model-View-Controller (MVC) software architecture pattern. It defines real MVC as separating an application into three interconnected parts: the model, the view, and the controller. The model manages the application's data logic and business rules. The view is responsible for displaying data. The controller handles user input and interaction by collecting information from the user to update the model and pass data between the model and view. The document provides examples of implementing MVC in PHP and notes there is a difference between a real and fake MVC implementation.
Architectural Patterns and Software Architectures: Client-Server, Multi-Tier,...Svetlin Nakov
Few days ago I gave a talk about software architectures. My goal was to explain as easy as possible the main ideas behind the most popular software architectures like the client-server model, the 3-tier and multi-tier layered models, the idea behind SOA architecture and cloud computing, and few widely used architectural patterns like MVC (Model-View-Controller), MVP (Model-View-Presenter), PAC (Presentation Abstraction Control), MVVM (Model-View-ViewModel). In my talk I explain that MVC, MVP and MVVM are not necessary bound to any particular architectural model like client-server, 3-tier of SOA. MVC, MVP and MVVM are architectural principles applicable when we need to separate the presentation (UI), the data model and the presentation logic.
Additionally I made an overview of the popular architectural principals IoC (Inversion of Control) and DI (Dependency Injection) and give examples how to build your own Inversion of Control (IoC) container.
The document discusses various design patterns. It begins by explaining that design patterns represent best practices used by experienced software developers to solve common problems. It then discusses the Gang of Four (GOF) patterns, which were identified in 1994 and include creational, structural, and behavioral patterns. Creational patterns like Singleton, Factory Method, Abstract Factory, and Prototype are covered. Structural patterns like Adapter, Bridge, Composite, Decorator, Facade, Flyweight, and Proxy are also introduced. Behavioral patterns like Chain of Responsibility, Command, Interpreter, Iterator, Mediator, Memento, Observer, State, Strategy, Template Method, and Visitor are briefly mentioned as well. The document then discusses some Java Enterprise
The document provides an overview of the Struts framework, including its advantages and components. It discusses the Model 1 and Model 2 architectures, and explains that Struts implements the MVC pattern. It describes the controller elements like the action servlet and request processor, the model components like Java classes and beans, and the view components like JSP tag libraries. The document also provides examples of how Struts can be implemented in a sample application.
The document discusses design patterns and architectural patterns, specifically focusing on the model-view-controller (MVC) pattern. It provides an overview of MVC, explaining the model, view, and controller components. It then describes how MVC is implemented in ASP.NET MVC, including the request flow and separation of concerns. Some key benefits of ASP.NET MVC like clean URLs, testability, and extensibility are also summarized.
Building an enterprise app in silverlight 4 and NHibernatebwullems
This document discusses building an enterprise application using Silverlight, NHibernate, and following CQRS and MVVM patterns. It recommends using OData to implement the query model in CQRS and NHibernate for the domain model. It then covers implementing the front-end using MVVM principles in Silverlight, including using view models, commands, and an event aggregator for communication between view models. Demo code is provided for various aspects like OData queries, NHibernate usage, implementing a base view model, locator pattern, MEF, and unit testing view models.
The document discusses several design patterns including Iterator, Observer, Strategy, Composite, and Decorator. It provides examples of each pattern and explains the key ideas and benefits of using design patterns, such as allowing reusable and flexible designs that can be communicated through a common vocabulary.
The document discusses several design patterns including Iterator, Observer, Strategy, Composite, and Decorator. It provides examples of each pattern and explains the key ideas and benefits of using design patterns, such as creating reusable and flexible designs that can be communicated effectively.
Here are the steps to create the UI for the banking portal application using Spring MVC:
1. Create a Spring MVC project in your IDE.
2. Create a Controller class called HomeController and annotate it with @Controller. Map it to the home page URL using @RequestMapping.
3. Create another Controller class called LoginController and annotate it with @Controller. Map it to the login page URL.
4. Create a JSP page called home.jsp to display the home page content.
5. Create another JSP page called login.jsp to display the login form.
6. Configure the view resolvers in the Spring configuration file to resolve JSP views.
7
Stephen Kennedy Silverlight 3 Deep DiveMicrosoftFeed
This document provides recommendations for best practices when developing Silverlight 3 applications using the Model-View-ViewModel (MVVM) pattern. It discusses using the MVVM pattern to separate application logic, data, and user interface. It also recommends specific practices like using an ObservableCollection for data binding, implementing INotifyPropertyChanged, and attaching view models to views to associate data and behavior. The document provides tips for styles and resources, data annotations, and performance optimizations in Silverlight development.
The document discusses Java Server Faces (JSF), a Java-based web application framework. It provides an overview of JSF, including what it is, how to build JSF projects, and examples of JSF tags. It also discusses the Model-View-Controller design pattern and how it relates to JSF.
In this slide we can see "What is that MVP Pattern ?", "Why we should to use MVP Pattern?", "How MVP Pattern works?", "How to Implementation MVP Pattern in Our Projects?"
The document discusses design patterns and the Model-View-Controller (MVC) architectural pattern. It describes the 23 Gang of Four design patterns categorized into creational, structural, and behavioral patterns. It then explains the MVC pattern, how it separates an application into the model, view, and controller components, and the typical request flow from request to response. Finally, it provides a brief history of ASP.NET MVC and the technologies used in ASP.NET MVC development.
The document discusses architectural design patterns MVC, MVP, and MVVM. It explains that MVC separates an application into three components - the model, the view, and the controller. MVP adds a presenter layer between the model and view to avoid direct communication. MVVM uses data binding between the view and view model layers, allowing two-way communication to automatically update the view when data changes. While any pattern can be used, the author recommends MVP with data binding to reduce code and prevent mistakes.
OpenDolphin with GroovyFX Workshop at GreachConf, MadridDierk König
This document discusses OpenDolphin, an architecture that decouples views from controllers and models using presentation models to enable asynchronous and remote communication. OpenDolphin allows applications to be deployed across multiple devices and channels while keeping the same application logic. It aims to save costs, protect investments, and allow applications to outperform the competition by facilitating features like multi-user collaboration, instant updates, and support for new devices and channels.
Similar to Acrhitecture deisign pattern_MVC_MVP_MVVM (20)
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Could you use a simple piece of Scala validation code (granted, a very simplistic one too!) that you can rewrite, now and again, to refresh your basic understanding of Applicative operators <*>, <*, *>?
The goal is not to write perfect code showcasing validation, but rather, to provide a small, rough-and ready exercise to reinforce your muscle-memory.
Despite its grandiose-sounding title, this deck consists of just three slides showing the Scala 3 code to be rewritten whenever the details of the operators begin to fade away.
The code is my rough and ready translation of a Haskell user-validation program found in a book called Finding Success (and Failure) in Haskell - Fall in love with applicative functors.
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Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
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Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
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When deliberating between CodeIgniter vs CakePHP for web development, consider their respective strengths and your project requirements. CodeIgniter, known for its simplicity and speed, offers a lightweight framework ideal for rapid development of small to medium-sized projects. It's praised for its straightforward configuration and extensive documentation, making it beginner-friendly. Conversely, CakePHP provides a more structured approach with built-in features like scaffolding, authentication, and ORM. It suits larger projects requiring robust security and scalability. Ultimately, the choice hinges on your project's scale, complexity, and your team's familiarity with the frameworks.
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These analyses were used to augment the existing checkers; these augmented checkers found 132 new NULL pointer bugs and 1308 unnecessary NULL tests in Linux 4.4.0-rc5, PostgreSQL 8.3.9, and Apache httpd 2.2.18.
- Accepted in ASPLOS ‘17, Xi’an, China.
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Atelier - Innover avec l’IA Générative et les graphes de connaissances
Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
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2. 2
2
What’ Design Pattern?
A design pattern is a general reusable solution
to a commonly occurring problem.
Creational Structural Behavioral
Meaning
determines how an
object is created
Organize objects
organize, manage,
and combine the
behavior of an
object
Range
Class Factory Method Adapter(Class)
Interpreter
Template Method
Object
Abstract Factory
Builder
Prototype
Singleton
Adapter(Object)
Bridge
Composite
Decorator
Facade
Flyweight
Proxy
Command
Iterator
Mediator
Memento
Observer
State
Strategy
Visitor
3. 3
3
What’ Architecture Design Pattern?
- Similar to design pattern, but has a broader scope
View
(Composit
e)
Controller
(Strategy)
Model
(Observer)
< Representative Architecture Pattern : MVC >
5. 5
5
Classic MVC
MODEL VIEW CONTROLLER
User Event
Update CheckCheck for updates
Is Data update
needed?
Request Data update
Yes
Update Data
UI Change
No
6. 6
6
MVC in Android
MODEL
VIEW
(XML)
CONTROLLER
(Activity, Fragment)
User Event
Update CheckCheck for updates
Is Data update
needed?
Request Data update
YesUpdate Data
UI Change
No
Interact with
Get user event
Notify event
Setup View
8. 8
8
MVP Pattern in Android
VIEW PRESENTER MODEL
Request Data
depending on event
Notify event to Presenter
Get Data
Update Data
Update UI Process business logic
User Event
Notify
Send
data
View Layer doesn’t know Model anymore!!
Ask view to setup itself
10. 10
1
0
MVVM Pattern in Android
View VIEWMODEL MODEL
Request Data
depending on event
Get Data
Update Data
Update UI Process business logic
User Event
Invoke
Action
Update
Model
State
change
event
Data
Binding
Update View Itself
View Layer
doesn’t know Model
anymore!!
19. 19
1
9
Conclusion
What’s COOLEST architecture in Android?
There is no right answer for that.
It’s depend on case by case.
However, ButterKnife that we use on our app CAN BE REPLACED
with Data Binding Library.
Editor's Notes
Before looking at what architectural patterns are,
Let's look briefly at what design patterns are components of an architectural pattern.
A design pattern is a pattern that can be easily used according to the situation by summarizing the structural problems that occur frequently in the process of developing a software. You can see various patterns by referring to the design pattern book of GOF which is the most influential word about design pattern.
Architectural patterns are similar to software design pattern but have a broader scope. The architectural patterns address various issues in software engineering, such as computer hardware performance limitations, high availability and minimization of a business risk. Some architectural patterns have been implemented within software frameworks.
In software engineering, a design pattern is a general reusable solution to a commonly occurring problem in software design.
Architectural patterns are similar to software design pattern but have a broader scope.
If a design pattern is a solution to a problem, the architecture pattern is a solution for the overall architecture of the software.
First of all, for example, you can see that the familiar MVC architecture patterns are configured to solve one problem in the software architecture through compound patterns, that is consist of various design patterns.
View - Composite - When the controller sends a refresh request to the view, it sends an update request to the top - level view component, which is handled automatically.
Controller - Strategy - As the controller corresponds to the behavior of the view, all you have to do is change the controller to make the view behave as you want.
Model: Observer Pattern - Whenever the state of a model changes, it sends information to the observer controller and view.
So which architecture pattern is most effective for our app?
To answer that question we need to look at each architecture pattern.
We will first look at the structure of the classic MVC model, which is the ancestor of all the architectural patterns. Then, let's look at the sample code to see how the other three patterns are implemented
MODEL
The Model is an implementation of the application's domain model that includes a data model along with business and validation logic. Examples of model objects include repositories, business objects, data transfer objects (DTOs) using data base, POJO.
The view component displays information to the user. Views get data from the model. The data provided from the model can be displayed in various views, and one controller component is connected to each view.The controller component converts user input, specific events, etc. into service requests. The user interacts with the system only through the controller.
While there are advantages to being separated into three layers of model, view and controller,The disadvantage is that models and views need to know each other and therefore are less reusable.
MODEL
The Model is an implementation of the application's domain model that includes a data model along with business and validation logic. Examples of model objects include repositories, business objects, data transfer objects (DTOs) using data base, POJO.
The view component displays information to the user. Views get data from the model. The data provided from the model can be displayed in various views, and one controller component is connected to each view.The controller component converts user input, specific events, etc. into service requests. The user interacts with the system only through the controller.
While there are advantages to being separated into three layers of model, view and controller,The disadvantage is that models and views need to know each other and therefore are less reusable.
.
The MVC pattern is implemented as follows:
The model has the same role as classic MVC. Within this project, it means FireBase and chatData.
The view consists of view objects created in xml. Within this project, it means ListView and EditText.
The controller is an activity. View objects communicate with the model through activities. An activity changes its data by interacting with the model layer, finding and connecting to the view, and accessing the view directly with the changed result. As a result, the view and controller will have strong coupling, and it is difficult to test the view separately, or to test the activity itself.
The model component is still unchanged.
And in the center there is a presenter instead of a controller.
Presenter processes the actual business logic. Unlike controller, it does not directly access the view object and directly modify the view object.
Instead, it calls the main view which is a virtual view. Change the data of the view object. In other words, because the main Activity and main Presenter communicate with each other through the MainView interface by manipulating the main view, so that manipulate the views in the Android API even though presenter don’t know the actual view that working with.
So eventually if the activity implements the MainView interface, so wecan easily test the presenter logic.
The model component is still unchanged.
And in the center there is a presenter instead of a controller.
Presenter processes the actual business logic. Unlike controller, it does not directly access the view object and directly modify the view object.
Instead, it calls the main view which is a virtual view. Change the data of the view object. In other words, because the main Activity and main Presenter communicate with each other through the MainView interface by manipulating the main view, so that manipulate the views in the Android API even though presenter don’t know the actual view that working with.
So eventually if the activity implements the MainView interface, so wecan easily test the presenter logic.
The view model itself acts as a model for the view.
MVVM pattern is a pattern that allows a view to change its state by itself when it sees that the view model changes, rather than seeing the model layer and changing its data.
Again, the model has not changed.
The view does not look at the model, but instead sees the view model change and changes the data on its own.
And the view model only performs business logic.
Applying this pattern requires binding between view objects and the data model.Android provides a data binding library for data binding.Before we look at the project that implements the pattern, let's see how the Android library does the data binding.
The view model itself acts as a model for the view.
MVVM pattern is a pattern that allows a view to change its state by itself when it sees that the view model changes, rather than seeing the model layer and changing its data.
Again, the model has not changed.
The view does not look at the model, but instead sees the view model change and changes the data on its own.
And the view model only performs business logic.
Applying this pattern requires binding between view objects and the data model.Android provides a data binding library for data binding.Before we look at the project that implements the pattern, let's see how the Android library does the data binding.
To use the data binding library first, you need Android version 2.1 or later, Grades version 1.5.0 alpha 1 version or later.Just add a data binding element to the build.gradle of your app module.
됩니다.
Let's look at the data binding layout file. The root tag is replaced by layout, followed by the data element and the existing view root element.Below is the text in the text view with the addition of the observer field of the view modelYou can see how to add the method itself.
And in the main activity, we create a data binding object and connect it.
The name of the data binding class is automatically generated using the name of xml.
And in the last line, complete the binding of the view and view model by setting the view model in the binding class.
And in the main activity, we create a data binding object and connect it.
The name of the data binding class is automatically generated using the name of xml.
And in the last line, complete the binding of the view and view model by setting the view model in the binding class.
And in the main activity, we create a data binding object and connect it.
The name of the data binding class is automatically generated using the name of xml.
And in the last line, complete the binding of the view and view model by setting the view model in the binding class.
Let's look at the data binding layout file. The root tag is replaced by layout, followed by the data element and the existing view root element.Below is the text in the text view with the addition of the observer field of the view modelYou can see how to add the method itself.
Next is the view model.In the view model, you create an observable field for the view object to observe.
If you set this Observable field, the view you are viewing automatically changes its value.
Here's the hint of editText.
We did this by creating the view model for our example code,
In fact, to use the data-binding library, you can use it in your existing Android activity without creating a view model object.
So what pattern is the best?The latest architectural patterns are not the best for us.
Above all, we need to apply our architecture pattern to our current situation.
Instead, But using the Android data-binding library will enable us to develop data-binding effectively without changing our app architecture at this time.