Redux hooks are available since the release of React version 16.8.x, and in this blog post, we will explore a structured pattern for Redux making use of React Native.
Wprowadzenie do architektury Flux i konceptu Redux’a. Ukazane w praktyce plusy i minusy użycia z ReactJS, AngularJS i Angular 2 z zaprezentowaniem kodu aplikacji.
Manage the Flux of your Web Application: Let's ReduxCommit University
Flux, un pattern alternativo a MVC sviluppato dagli ingegneri di Facebook; Redux, nuovo pattern ideato da Dan Abramov che da molti è considerato un’evoluzione di Flux.
Pattern architetturali, i loro pregi, i loro difetti, insieme a Francesco Strazzullo.
This document provides an overview of key concepts related to React including:
- Virtual DOM and how it provides high performance through DOM diffing
- Unidirectional data flow in React from actions to stores
- Components and their use of props and state
- JSX syntax for writing React components
- Redux architecture including actions, reducers, and stores for managing state
- React-Redux for connecting React components to Redux stores
- The document discusses using isolates in Flutter to run computationally expensive tasks in parallel. It provides an overview of isolates, how to create and communicate between them, and some strategies for using isolates effectively, including using load balancers and stream transformers. It also discusses some limitations and best practices based on profiling isolate usage.
Redux - idealne dopełnienie Reacta. Prezentacja przedstawiona na warsztatach z podstaw technologii Redux w ramach DreamLab Academy.
W razie pytań zapraszamy do kontaktu academy@dreamlab.pl
The presentation has been part of DreamLab Academy workshop on Redux. For more details get in touch - academy@dreamlab.pl
This document discusses testing JavaScript with the Jasmine testing framework. It provides an overview of why to use JavaScript and Jasmine for testing, how Jasmine integrates well with Rails and supports CoffeeScript. It demonstrates sample tests written in JavaScript and CoffeeScript using Jasmine's matchers and other features. Finally, it provides a link to a GitHub repository with a demo of testing JavaScript with Jasmine.
В презентации описаны лучшие практики использования библиотеки React в связке с Redux. Быстрое разворачивание SPA без настройки Webpack и Babel с помощью утилиты Create React App, Smart and Dumb, Stateful and Stateless Components, управление рендером с помощью shouldComponentUpdate, Redux модули, мемоизация и middlewares.
More useful info on our:
- website: https://clickky.biz
- blog: https://clickky.biz/blog
Sign up!
Wprowadzenie do architektury Flux i konceptu Redux’a. Ukazane w praktyce plusy i minusy użycia z ReactJS, AngularJS i Angular 2 z zaprezentowaniem kodu aplikacji.
Manage the Flux of your Web Application: Let's ReduxCommit University
Flux, un pattern alternativo a MVC sviluppato dagli ingegneri di Facebook; Redux, nuovo pattern ideato da Dan Abramov che da molti è considerato un’evoluzione di Flux.
Pattern architetturali, i loro pregi, i loro difetti, insieme a Francesco Strazzullo.
This document provides an overview of key concepts related to React including:
- Virtual DOM and how it provides high performance through DOM diffing
- Unidirectional data flow in React from actions to stores
- Components and their use of props and state
- JSX syntax for writing React components
- Redux architecture including actions, reducers, and stores for managing state
- React-Redux for connecting React components to Redux stores
- The document discusses using isolates in Flutter to run computationally expensive tasks in parallel. It provides an overview of isolates, how to create and communicate between them, and some strategies for using isolates effectively, including using load balancers and stream transformers. It also discusses some limitations and best practices based on profiling isolate usage.
Redux - idealne dopełnienie Reacta. Prezentacja przedstawiona na warsztatach z podstaw technologii Redux w ramach DreamLab Academy.
W razie pytań zapraszamy do kontaktu academy@dreamlab.pl
The presentation has been part of DreamLab Academy workshop on Redux. For more details get in touch - academy@dreamlab.pl
This document discusses testing JavaScript with the Jasmine testing framework. It provides an overview of why to use JavaScript and Jasmine for testing, how Jasmine integrates well with Rails and supports CoffeeScript. It demonstrates sample tests written in JavaScript and CoffeeScript using Jasmine's matchers and other features. Finally, it provides a link to a GitHub repository with a demo of testing JavaScript with Jasmine.
В презентации описаны лучшие практики использования библиотеки React в связке с Redux. Быстрое разворачивание SPA без настройки Webpack и Babel с помощью утилиты Create React App, Smart and Dumb, Stateful and Stateless Components, управление рендером с помощью shouldComponentUpdate, Redux модули, мемоизация и middlewares.
More useful info on our:
- website: https://clickky.biz
- blog: https://clickky.biz/blog
Sign up!
The document discusses the configuration of Spring Batch infrastructure which includes creating a JobRepository, JobLauncher, and TransactionManager. It defines beans for the JobRepository, JobLauncher, TransactionManager, and MVestJobLauncher. The JobLauncher is configured with the jobRepository. The MVestJobLauncher extends the JobLauncher and contains additional properties. Transaction management is handled through AOP advice for different method names.
Intro course presentation for React with Redux. It is including how to make AJAX Request with React, use Middleware, Router, and Reselect.
Github repo - https://github.com/stanimirtt/react-redux-course-2017
React is a JavaScript library for building user interfaces that uses a virtual DOM for efficient updates. Redux is used to handle the state of React applications in a predictable way using stores, actions, and reducers. Together, React and Redux form a powerful combination where React components interact with the Redux store via containers to update the UI based on state changes.
This document provides an overview of React and Redux concepts including:
- React basics like components, props, state, and lifecycle methods
- Flux architecture and how data flows through actions, dispatcher, and stores
- Redux as an alternative to Flux that uses a single store updated by reducers in response to actions
- Additional React topics like JSX, propTypes, and using React with ES6 classes are also covered.
This document provides an overview of Rxjs (Reactive Extensions for JavaScript). It begins by explaining why Rxjs is useful for dealing with asynchronous code in a synchronous way and provides one paradigm for asynchronous operations. It then discusses the history of callbacks and promises for asynchronous code. The bulk of the document explains key concepts in Rxjs including Observables, Operators, error handling, testing with Schedulers, and compares Promises to Rxjs. It provides examples of many common Rxjs operators and patterns.
Google apps script database abstraction exposed versionBruce McPherson
This document describes a database abstraction library for Google Apps Script that provides a consistent API for NoSQL databases. It allows code to be reused across different database backends by handling queries, authentication, caching, and more transparently. The library exposes the capabilities through a JSON REST API that can be accessed from other programming languages. It also includes a VBA client library that translates VBA calls into requests to the JSON API, allowing VBA code to access databases in the same way as Google Apps Script.
By now, you’ve probably heard of Akka, the JVM toolkit for building scalable, resilient and resource efficient applications in Java or Scala. With over 12 open-source and commercial modules in the toolkit, Akka takes developers from actors on a single JVM, all the way out to network partition healing and clusters of servers distributed across fleets of JVMs.
In this technical webinar, O’Reilly author and Lightbend Developer Advocate, Hugh McKee, takes you on a deep dive into advanced Akka features for enhanced application resilience, elasticity, and responsiveness.
Building on real-world examples from his past experience as an Akka developer, Hugh will show how you can take advantage of:
• Akka Multi-Data Center Clustering improves reliability across multiple data centers, availability zones or regions.
• Logically grouping related nodes in large clusters to improve stability and scalability.
• Akka Multi-Data Center Persistence for increased fault tolerance, locate data near the user, and balance the load across data centers.
• Akka Cluster Sharding in a multi data center environment, to optimize shard locality within a single data center and go Active-Active for improved resilience and availability.
This document discusses iOS application architecture and REST client implementation. It covers common iOS concepts like MVC, UIKit, table views and their data sources. It also describes a Comet architecture using a REST API and database to retrieve and display product data in a table. The controller implements the table view data source and delegate methods to display the data and handle user interactions like tapping rows.
This document provides examples of common patterns and techniques used in React including:
- Defining React components with JSX syntax
- Transforming JSX to JavaScript using Babel
- Passing props and children to components
- Handling events and state in components
- Best practices for keys, prop validation, and component lifecycle methods
1) Rxjs provides a paradigm for dealing with asynchronous operations in a synchronous way using observables. Observables allow representing push-based data streams and provide operators to compose and transform these streams.
2) Operators like map, filter, and switchMap allow manipulating observable streams and their values in various ways. Common patterns include cascading asynchronous calls, parallelizing multiple requests, and retrying or error handling of streams.
3) Schedulers allow bending time and virtual clocks, enabling testing asynchronous code by controlling when asynchronous operations complete. Marble testing uses descriptive patterns to visually test observable streams and operator behavior.
Redux "Bad" Practices - A List of 13 Bad Practices and How to Avoid ThemAdam Klein
"Redux forces you to write good code" - I've heard that sentence many times. In fact - it's quite easy to write bad code with Redux, as I've seen many times.In this talk I will talk about best practices and techniques with Redux, and do some live refactoring.
This document describes a database abstraction library for Google Apps Script that allows using different backend databases like Google Sheets, Drive files, and noSQL databases with the same code. It provides caching and handles common queries and operations with only 6 simple methods. Different backends can be accessed by getting a handle to the specific backend using the DataHandler class. Data can also be copied between backends and backends are accessible via a REST API.
MBL301 Data Persistence to Amazon Dynamodb for Mobile Apps - AWS re: Invent 2012Amazon Web Services
Object modeling is a common practice in mobile applications. We present two methods for modeling objects backed by Amazon DynamoDB, the AWS Persistence Framework for Core Data and DynamoDBMapper. We cover the benefits and limitations of these two solutions and demonstrate sample applications built with both technologies.
This document provides an introduction to React for developers. It explains that React is a JavaScript library for building user interfaces developed by Facebook. It then covers key React concepts like components, props, state, rendering, and the virtual DOM. It also discusses tools and patterns for architecting React apps like Flux, Redux, routing, internationalization, and async logic. Finally, it recommends designing state carefully, using standards like Flux Standard Action, avoiding side effects in reducers, and leveraging tools like React DevTools.
The document discusses the Observer design pattern and how to create observable classes in ExtJS that can notify observer objects when events occur. It provides an example of an ObservableStack class that inherits from Ext.util.Observable and defines push and pop events that are fired when those methods are called. An example shows setting up event handlers on an ObservableStack instance and calling its methods to demonstrate event handling.
Events describe actions that occur and provide information about what happened. ExtJS normalizes event handling across browsers. Classes that expose events inherit from Observable which allows subscriber objects to be notified of events.
The OpenStack Horizon project provides a web-based User Interface to OpenStack services. It is constructed in two parts: (1) a core set of libraries for implementing a Dashboard; (2) the dashboard implementation that uses the core set of libraries.
Horizon uses python django — server side technology
Django is a wonderful framework, but a little dated. Pre-dates the rise in client-side and single page applications.
Javascript is used for enhancing the user experience
In the time since Horizon was first architected, there have been major advances in the design, and best practices for web applications. In particular, the use of more sophisticated and robust client-side javascript frameworks like BackboneJS, AngularJS, MeteorJS, have come to the fore.
These applications provide a much more responsive user experience, much cleaner separation between the client and server, enable configuration driven interfaces, and facilitate more modular testing.
This in turn, results in shorter development cycles, more testable software, and above all, a better user experience.
In this presentation, we share some of our recent work in re-architecting parts of Horizon to take advantage of these new technologies. We discuss some of the technologies we use, our application architecture, and some of the pitfalls to avoid.
- What is redux ?
- Redux Principles
- Data Flow in Redux
- Understanding Action, Reducers, Store
- Data flow in React-Redux App
- Demo
Redux Utilities
The document discusses the configuration of Spring Batch infrastructure which includes creating a JobRepository, JobLauncher, and TransactionManager. It defines beans for the JobRepository, JobLauncher, TransactionManager, and MVestJobLauncher. The JobLauncher is configured with the jobRepository. The MVestJobLauncher extends the JobLauncher and contains additional properties. Transaction management is handled through AOP advice for different method names.
Intro course presentation for React with Redux. It is including how to make AJAX Request with React, use Middleware, Router, and Reselect.
Github repo - https://github.com/stanimirtt/react-redux-course-2017
React is a JavaScript library for building user interfaces that uses a virtual DOM for efficient updates. Redux is used to handle the state of React applications in a predictable way using stores, actions, and reducers. Together, React and Redux form a powerful combination where React components interact with the Redux store via containers to update the UI based on state changes.
This document provides an overview of React and Redux concepts including:
- React basics like components, props, state, and lifecycle methods
- Flux architecture and how data flows through actions, dispatcher, and stores
- Redux as an alternative to Flux that uses a single store updated by reducers in response to actions
- Additional React topics like JSX, propTypes, and using React with ES6 classes are also covered.
This document provides an overview of Rxjs (Reactive Extensions for JavaScript). It begins by explaining why Rxjs is useful for dealing with asynchronous code in a synchronous way and provides one paradigm for asynchronous operations. It then discusses the history of callbacks and promises for asynchronous code. The bulk of the document explains key concepts in Rxjs including Observables, Operators, error handling, testing with Schedulers, and compares Promises to Rxjs. It provides examples of many common Rxjs operators and patterns.
Google apps script database abstraction exposed versionBruce McPherson
This document describes a database abstraction library for Google Apps Script that provides a consistent API for NoSQL databases. It allows code to be reused across different database backends by handling queries, authentication, caching, and more transparently. The library exposes the capabilities through a JSON REST API that can be accessed from other programming languages. It also includes a VBA client library that translates VBA calls into requests to the JSON API, allowing VBA code to access databases in the same way as Google Apps Script.
By now, you’ve probably heard of Akka, the JVM toolkit for building scalable, resilient and resource efficient applications in Java or Scala. With over 12 open-source and commercial modules in the toolkit, Akka takes developers from actors on a single JVM, all the way out to network partition healing and clusters of servers distributed across fleets of JVMs.
In this technical webinar, O’Reilly author and Lightbend Developer Advocate, Hugh McKee, takes you on a deep dive into advanced Akka features for enhanced application resilience, elasticity, and responsiveness.
Building on real-world examples from his past experience as an Akka developer, Hugh will show how you can take advantage of:
• Akka Multi-Data Center Clustering improves reliability across multiple data centers, availability zones or regions.
• Logically grouping related nodes in large clusters to improve stability and scalability.
• Akka Multi-Data Center Persistence for increased fault tolerance, locate data near the user, and balance the load across data centers.
• Akka Cluster Sharding in a multi data center environment, to optimize shard locality within a single data center and go Active-Active for improved resilience and availability.
This document discusses iOS application architecture and REST client implementation. It covers common iOS concepts like MVC, UIKit, table views and their data sources. It also describes a Comet architecture using a REST API and database to retrieve and display product data in a table. The controller implements the table view data source and delegate methods to display the data and handle user interactions like tapping rows.
This document provides examples of common patterns and techniques used in React including:
- Defining React components with JSX syntax
- Transforming JSX to JavaScript using Babel
- Passing props and children to components
- Handling events and state in components
- Best practices for keys, prop validation, and component lifecycle methods
1) Rxjs provides a paradigm for dealing with asynchronous operations in a synchronous way using observables. Observables allow representing push-based data streams and provide operators to compose and transform these streams.
2) Operators like map, filter, and switchMap allow manipulating observable streams and their values in various ways. Common patterns include cascading asynchronous calls, parallelizing multiple requests, and retrying or error handling of streams.
3) Schedulers allow bending time and virtual clocks, enabling testing asynchronous code by controlling when asynchronous operations complete. Marble testing uses descriptive patterns to visually test observable streams and operator behavior.
Redux "Bad" Practices - A List of 13 Bad Practices and How to Avoid ThemAdam Klein
"Redux forces you to write good code" - I've heard that sentence many times. In fact - it's quite easy to write bad code with Redux, as I've seen many times.In this talk I will talk about best practices and techniques with Redux, and do some live refactoring.
This document describes a database abstraction library for Google Apps Script that allows using different backend databases like Google Sheets, Drive files, and noSQL databases with the same code. It provides caching and handles common queries and operations with only 6 simple methods. Different backends can be accessed by getting a handle to the specific backend using the DataHandler class. Data can also be copied between backends and backends are accessible via a REST API.
MBL301 Data Persistence to Amazon Dynamodb for Mobile Apps - AWS re: Invent 2012Amazon Web Services
Object modeling is a common practice in mobile applications. We present two methods for modeling objects backed by Amazon DynamoDB, the AWS Persistence Framework for Core Data and DynamoDBMapper. We cover the benefits and limitations of these two solutions and demonstrate sample applications built with both technologies.
This document provides an introduction to React for developers. It explains that React is a JavaScript library for building user interfaces developed by Facebook. It then covers key React concepts like components, props, state, rendering, and the virtual DOM. It also discusses tools and patterns for architecting React apps like Flux, Redux, routing, internationalization, and async logic. Finally, it recommends designing state carefully, using standards like Flux Standard Action, avoiding side effects in reducers, and leveraging tools like React DevTools.
The document discusses the Observer design pattern and how to create observable classes in ExtJS that can notify observer objects when events occur. It provides an example of an ObservableStack class that inherits from Ext.util.Observable and defines push and pop events that are fired when those methods are called. An example shows setting up event handlers on an ObservableStack instance and calling its methods to demonstrate event handling.
Events describe actions that occur and provide information about what happened. ExtJS normalizes event handling across browsers. Classes that expose events inherit from Observable which allows subscriber objects to be notified of events.
The OpenStack Horizon project provides a web-based User Interface to OpenStack services. It is constructed in two parts: (1) a core set of libraries for implementing a Dashboard; (2) the dashboard implementation that uses the core set of libraries.
Horizon uses python django — server side technology
Django is a wonderful framework, but a little dated. Pre-dates the rise in client-side and single page applications.
Javascript is used for enhancing the user experience
In the time since Horizon was first architected, there have been major advances in the design, and best practices for web applications. In particular, the use of more sophisticated and robust client-side javascript frameworks like BackboneJS, AngularJS, MeteorJS, have come to the fore.
These applications provide a much more responsive user experience, much cleaner separation between the client and server, enable configuration driven interfaces, and facilitate more modular testing.
This in turn, results in shorter development cycles, more testable software, and above all, a better user experience.
In this presentation, we share some of our recent work in re-architecting parts of Horizon to take advantage of these new technologies. We discuss some of the technologies we use, our application architecture, and some of the pitfalls to avoid.
- What is redux ?
- Redux Principles
- Data Flow in Redux
- Understanding Action, Reducers, Store
- Data flow in React-Redux App
- Demo
Redux Utilities
This document describes how to build a simple todo application with React and Material UI. It discusses setting up the project structure with components, contexts, reducers and custom hooks to manage application state. Key aspects covered include using contexts to pass data between components, a reducer to manage todo data in local storage, and custom hooks for form inputs, toggling and local storage. The main components built are TodoApp, TodoList, TodoForm and Todo. This provides a fully functional todo app implementing modern React practices.
This document provides an overview of React including:
- React is a JavaScript library created by Facebook for building user interfaces
- It uses virtual DOM to efficiently re-render components on updates rather than entire page
- React supports ES6 features and uses classes, arrow functions, and other syntax
- Popular tools for React include Create React App for setting up projects and React Dev Tools for debugging
Vuex is a state management pattern for Vue.js applications that serves as a centralized store for component data. It consists of state, getters, mutations, and actions. State contains app data, getters help access state, mutations are the only way to modify state and must be synchronous, and actions allow asynchronous operations and commit mutations.
This document provides a summary of React including:
- React components are composed of props, states, and lifecycle hooks.
- Data fetching is done using libraries like Axios in component lifecycle methods like componentDidMount.
- Shared state can be managed using libraries like Redux by connecting components to the global state store.
- Other React patterns covered include children components, higher-order components, render props, and performance techniques like shouldComponentUpdate.
- Routing is typically done with React Router, though server-side rendering requires additional configuration for asynchronous data fetching.
Redux and context api with react native app introduction, use cases, implemen...Katy Slemon
The document compares Redux and Context API for state management in React Native apps. It discusses the purpose and building blocks of each, provides an example counter app using both approaches, and compares their key differences. Redux is designed for centralized state management while Context API is for passing data through a component tree without prop drilling. Redux uses actions, reducers and a store while Context API uses contexts and providers. The example shows implementing each approach and the document concludes that Redux is better for large complex apps that need precise state management.
Learn React hooks best practices which you should follow in 2022. You will know the some of the best tricks to use the React hooks in 2022. Read the complete article for more insights.
This document discusses using Redux with Angular to create a reactive architecture. It introduces common problems with the Angular state management approach and how Redux solves these. Key aspects covered include the Flux pattern, an overview of Redux, using reducers to modify state immutably, connecting Angular to Redux state with ngRedux, dispatching actions, and building smart and dumb components. Examples are provided of a todo list app implemented with Redux and a preview of a TrendyBrunch app state and components.
At Lia Infraservice we create Dynamic Websites. Become a front-end React JS developer and be a part of our tech-savvy Web App Development Company in Chennai.
This document provides an overview of the Redux framework for managing state in JavaScript applications. It discusses key Redux concepts like single source of truth, immutable state, pure reducer functions, stores, actions, and combining reducers. It also covers integrating Redux with React and asynchronous operations. The document outlines the course content which will cover these Redux fundamentals and patterns for using Redux with React and asynchronous logic.
This document provides an overview and introduction to React, a JavaScript library for building user interfaces. It discusses why React is used, how to set up a React environment, core React concepts like components, props, state, lifecycles and events. It also introduces React Native for building native mobile apps with React. The document emphasizes learning React through hands-on examples and practice.
React is a JavaScript library for building user interfaces and single-page applications. It allows developers to create reusable UI components called elements that can be rendered to the DOM. Components can contain state that updates the UI and respond to user events. The key concepts in React include JSX for building UI elements, components, props for passing data between components, and state for dynamic data. Setting up a React project involves installing dependencies like React, ReactDOM, and Babel to transpile JSX and enable component-based development.
- React is a JavaScript library for building user interfaces that uses a virtual DOM for faster re-rendering on state changes.
- Everything in React is a component that can have states, props, and lifecycle methods like render(). Components return JSX elements.
- Props are used for passing data to components in a unidirectional flow, while states allow components to re-render on changes.
- The render() method returns the view, accessing props and state values. Forms and events also follow React conventions.
Maintaining sanity in a large redux appNitish Kumar
The most common complaint about using Redux with React is how it makes you write a lot of boilerplate. We’ll see how Redux lets us choose how verbose we'd like our code to be, depending on personal style, team preferences, longer term maintainability, etc.
The document provides an overview of trends in the React ecosystem. It introduces React concepts like components, props, state and lifecycles. It also discusses tools like Babel and Webpack. For state management, it covers Redux and MobX. Redux uses a single state tree, pure functions called reducers, and actions to change state. MobX uses observable state and computed values. The document also summarizes routing with React Router, and React bindings for Redux like react-redux and middleware like redux-saga and redux-thunk.
When developing applications we have a hard time managing application state, and that is okay because managing application state is hard. We will try to make it easier using Redux.
Redux is predictable state management container for JavaScript applications that helps us manage our state while also making our state mutations predictable.
Through the presentation and code, I will show you how I solved my state problem with Redux in React application.
Similar to How to use redux with react hooks in react native application (20)
The document discusses various alternatives to the React JavaScript framework for building user interfaces. It summarizes a tech talk where React experts discussed alternative frameworks. The main alternatives mentioned include Preact, Inferno JS, Backbone JS, Ember JS, and Vue JS. For each alternative, the document discusses pros and cons compared to React, including characteristics like size, performance, community support, and when each may be preferable to use over React. It provides a high-level overview of the considerations in choosing between React and its alternative frameworks.
Data Science Use Cases in Retail & Healthcare Industries.pdfKaty Slemon
Data science has many useful applications in retail and healthcare. In retail, it allows for personalized recommendations, fraud detection, price optimization, and sentiment analysis. In healthcare, it facilitates medical imaging analysis, genomic research, drug discovery, predictive analytics, disease tracking and prevention, and monitoring through wearable devices. By analyzing customer, patient, and other relevant data, data science helps these industries better meet needs, enhance experiences and outcomes, and improve operations and decision making.
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The document discusses the cost of hiring Golang developers. It begins by providing context on the rise of Golang due to the growth of IoT. The cost of hiring Golang developers depends on factors like experience, location, project size, and engagement model. Hourly rates range from $18-94 in different regions, with rates generally lowest in Asia and highest in North America. Common engagement models include time and materials, fixed price, and dedicated teams. The document aims to help understand the budget needed to hire Golang talent.
Flutter 3 is now stable on macOS and Linux and supports Apple Silicon chips. Key updates include menu support for macOS, Material You design support, improved Firebase integration, foldable device support, and performance improvements for animations and image decoding. Flutter 3 also adds themes extensions and updated ad support while maintaining Flutter's mission of being an open-source, cross-platform framework.
How Much Does It Cost To Hire Full Stack Developer In 2022.pdfKaty Slemon
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Sure Shot Ways To Improve And Scale Your Node js Performance.pdfKaty Slemon
Want to Improve And Scale Your Node js Performance? Check out some Node Js performance optimization tips and tricks for improving your existing Node Js app.
How to Develop Slack Bot Using Golang.pdfKaty Slemon
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5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
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.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...Alex Pruden
Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/temporal-event-neural-networks-a-more-efficient-alternative-to-the-transformer-a-presentation-from-brainchip/
Chris Jones, Director of Product Management at BrainChip , presents the “Temporal Event Neural Networks: A More Efficient Alternative to the Transformer” tutorial at the May 2024 Embedded Vision Summit.
The expansion of AI services necessitates enhanced computational capabilities on edge devices. Temporal Event Neural Networks (TENNs), developed by BrainChip, represent a novel and highly efficient state-space network. TENNs demonstrate exceptional proficiency in handling multi-dimensional streaming data, facilitating advancements in object detection, action recognition, speech enhancement and language model/sequence generation. Through the utilization of polynomial-based continuous convolutions, TENNs streamline models, expedite training processes and significantly diminish memory requirements, achieving notable reductions of up to 50x in parameters and 5,000x in energy consumption compared to prevailing methodologies like transformers.
Integration with BrainChip’s Akida neuromorphic hardware IP further enhances TENNs’ capabilities, enabling the realization of highly capable, portable and passively cooled edge devices. This presentation delves into the technical innovations underlying TENNs, presents real-world benchmarks, and elucidates how this cutting-edge approach is positioned to revolutionize edge AI across diverse applications.
How information systems are built or acquired puts information, which is what they should be about, in a secondary place. Our language adapted accordingly, and we no longer talk about information systems but applications. Applications evolved in a way to break data into diverse fragments, tightly coupled with applications and expensive to integrate. The result is technical debt, which is re-paid by taking even bigger "loans", resulting in an ever-increasing technical debt. Software engineering and procurement practices work in sync with market forces to maintain this trend. This talk demonstrates how natural this situation is. The question is: can something be done to reverse the trend?
Discover top-tier mobile app development services, offering innovative solutions for iOS and Android. Enhance your business with custom, user-friendly mobile applications.
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
Generating privacy-protected synthetic data using Secludy and MilvusZilliz
During this demo, the founders of Secludy will demonstrate how their system utilizes Milvus to store and manipulate embeddings for generating privacy-protected synthetic data. Their approach not only maintains the confidentiality of the original data but also enhances the utility and scalability of LLMs under privacy constraints. Attendees, including machine learning engineers, data scientists, and data managers, will witness first-hand how Secludy's integration with Milvus empowers organizations to harness the power of LLMs securely and efficiently.
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdfChart Kalyan
A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdf
How to use redux with react hooks in react native application
1. How to Use
Redux with
React Hooks in
React Native
Application
w w w . b a c a n c y t e c h n o l o g y . c o m
2. The react-redux library has official support
for the Hooks in React as well as React
Native applications to use Redux as a state
management library. With more and more
adoption of React Hooks and its ability to
handle side effects and components, now, it
is regarded as a standard functional
component pattern.
Redux hooks are available since the release
of React version 16.8.x, and in this blog post,
we will explore a structured pattern for
Redux making use of React Native.
4. To replace the higher-order component
Redux hook API is used, “connect()” with
hooks like “useDispatch” and “useSelector”
as present React-Redux provides 3 hooks:
⦿useSelector():
This can help you replace the
mapStateToProps. The purpose is to extract
the data from the ‘Redux’ store whenever
function component renders.
⦿useDispatch():
A replacement to mapDispatchToProps, it’s
purpose is to return the reference to the
dispatch object.
⦿useStore():
It helps to return the reference that was
wrapped in Redux . It is ideal to use in
specific scenarios, like replacing reducers.
6. The very next step is to install the
dependencies to use Redux and manage the
state:
yarn add redux react-redux lodash.remove
Here I am going to follow ducks for
directory structure to manage Redux files
as ducks let you have modular reducers in
the application itself. There is no need to
create separate files for types, actions, and
action creators. All of these can be managed
in one modular file, and if it demands to
create more than one reducer, then you can
simply define multiple reducer files.
How to Add Action Types and Creators
7. While using Redux, the state is
characterized by JS object. It would be best
if you considered an object as ready as it
does not allow you to make changes in the
state. This is the reason you need to take the
help of actions.
Actions are similar to the events in Redux.
To start with
src/ directory
Create subdirectory – Redux
Create a new file - notesApp.js.
Now you have provided an additional ability
to allow users to add notes.
// Action Types
export const ADD_NOTE = 'ADD_NOTE'
export const DELETE_NOTE =
'DELETE_NOTE'
8. To Create Reducers
Path: src / store /
File: /ducks/example.js
The receiver of the action is addressed as a
reducer; whenever an action takes place,
the state of the application changes and
the app’s state is done by reducers.
Reducer functions based on the previous
and initial state.
Let’s Move Ahead to Add a
Reducer
10. Holds application state
Allows access to the state via getState()
Let the state be updated
via dispatch(action).
Provides permission to registers
listeners via subscribe(listener)
Basically, the Redux store is responsible
for the following:
Under the src folder, create a store.js file
and configure it with the Redux store to
define the initialState parameter.
Redux Store
11. /*
* src/store.js
* No initialState
*/import { createStore, applyMiddleware }
from 'redux';
import thunk from 'redux-thunk';
import rootReducer from
'./reducers/rootReducer';export default
function configureStore() {
return createStore(
rootReducer,
applyMiddleware(thunk)
);
}
Source: Medium
12. The Redux store is set up, but the
application has no access to it. Using a
provider from React binding react-redux,
the store will be available to every
component in the application. Here I am
going to consider the store and children as
props.
To Create Store
13. /*
src/index.js
*/import React from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux'
import configureStore from './store';import
'./index.css';
import App from './App';
import registerServiceWorker from
'./registerServiceWorker';ReactDOM.render
(
< Provider store={configureStore()} >
< App />
< /Provider >,
document.getElementById('root')
);
registerServiceWorker();
Source: Medium
14. To access state with Redux, use the
useSelector, it is very similar to the
mapStateToProps inside connect(). It
allows you to extract data from the Redux
store state using a selector function.
The significant difference between the
argument and the Hook is the selector will
present any value in return not any object
as a result.
Simply open the ViewNotes.js file.
// ...after rest of the imports
import { useSelector } from 'react-redux'
To Access the Global State
15. The Hook is only used to perform to
dispatch function from the Redux store.
Simply import it from the react-redux
along with the action creators to dispatch
an action.
import { useSelector, useDispatch } from
'react-redux'
To dispatch an action define the following
statement useSelectorHook:
const dispatch = useDispatch()
Dispatching Actions
16. const addNote = note =>
dispatch(addnote(note))
const deleteNote = id =>
dispatch(deletenote(id))
FYI, here’s a code snipet of List.Item
< List.Item
title={item.note.noteTitle}
description={item.note.noteValue}
descriptionNumberOfLines={1}
titleStyle={styles.listTitle}
onPress={() => deleteNote(item.id)}
/ >
To trigger these events:
17. So far, you are good to go with running an
application from the terminal window
executing the command called expo start.
For your reference, here’s a complete
snippet of code.
To Run the Application
18.
19. The additional hooks such as useDispatch
and useSelector not only eliminates the
need to write ample of boilerplate code but
also provides the additional advantages of
using functional components. To
understand more in detail, please refer to
their official document. If you are planning
to hire React Native developers, with the
relevant skillset who can help you
implement Hooks in your React-Redux
application, then you have landed on the
right page.
We are a globally renowned React Native
development company and can help you
build visually stunning and future-proof
mobile app solutions.
Wrapping Up