React uses Virtual DOM exists which is like a lightweight copy of the actual DOM(a virtual representation of the DOM). So for every object that exists in the original DOM, there is an object for that in React Virtual DOM. It is exactly the same, but it does not have the power to directly change the layout of the document. Manipulating DOM is slow, but manipulating Virtual DOM is fast as nothing gets drawn on the screen. So each time there is a change in the state of our application, the virtual DOM gets updated first instead of the real DOM
The document provides an introduction to React, a JavaScript library for building user interfaces. It discusses key React concepts like components, properties, state, one-way data flow, and JSX syntax. It also covers setting up a development environment with Create React App and shows how to create a basic React component with state. The target audience appears to be people new to React who want to learn the fundamentals.
The document discusses the Spring Framework, an open source application framework for Java. It provides inversion of control and dependency injection to manage application objects. The core package provides dependency injection while other packages provide additional features like transaction management, ORM integration, AOP, and MVC web development. The framework uses an IoC container to manage application objects called beans through configuration metadata.
This document provides an overview and introduction to React JS. It discusses that React JS is a JavaScript library developed by Facebook for building user interfaces and reusable UI components. It encourages creation of reusable components that present data that changes over time. The document also covers React JS features, architecture, components, best practices, pros and cons, and provides useful links for examples and environment setup.
React is a library for building user interfaces using components. It uses a virtual DOM for rendering components, which are pieces of UI defined as classes or functions. Components receive data via props and local state, and can be nested to build complex UIs. The component lifecycle includes mounting, updating, and unmounting phases. Data flows unidirectionally down the component tree. React has a vibrant ecosystem and community for continued learning.
React Js Basic Details and Descriptions
Frontend Javascript Library, to make decent SPA
The fastest way to build a segregated component based front end for software development.
React is a JavaScript library created by Facebook and Instagram to build user interfaces. It allows developers to create fast user interfaces easily through components. React uses a virtual DOM to update the real DOM efficiently. Some major companies that use React include Facebook, Yahoo!, Airbnb, and Instagram. React is not a complete framework but rather just handles the view layer. It uses a one-way data binding model and components to build user interfaces.
React uses Virtual DOM exists which is like a lightweight copy of the actual DOM(a virtual representation of the DOM). So for every object that exists in the original DOM, there is an object for that in React Virtual DOM. It is exactly the same, but it does not have the power to directly change the layout of the document. Manipulating DOM is slow, but manipulating Virtual DOM is fast as nothing gets drawn on the screen. So each time there is a change in the state of our application, the virtual DOM gets updated first instead of the real DOM
The document provides an introduction to React, a JavaScript library for building user interfaces. It discusses key React concepts like components, properties, state, one-way data flow, and JSX syntax. It also covers setting up a development environment with Create React App and shows how to create a basic React component with state. The target audience appears to be people new to React who want to learn the fundamentals.
The document discusses the Spring Framework, an open source application framework for Java. It provides inversion of control and dependency injection to manage application objects. The core package provides dependency injection while other packages provide additional features like transaction management, ORM integration, AOP, and MVC web development. The framework uses an IoC container to manage application objects called beans through configuration metadata.
This document provides an overview and introduction to React JS. It discusses that React JS is a JavaScript library developed by Facebook for building user interfaces and reusable UI components. It encourages creation of reusable components that present data that changes over time. The document also covers React JS features, architecture, components, best practices, pros and cons, and provides useful links for examples and environment setup.
React is a library for building user interfaces using components. It uses a virtual DOM for rendering components, which are pieces of UI defined as classes or functions. Components receive data via props and local state, and can be nested to build complex UIs. The component lifecycle includes mounting, updating, and unmounting phases. Data flows unidirectionally down the component tree. React has a vibrant ecosystem and community for continued learning.
React Js Basic Details and Descriptions
Frontend Javascript Library, to make decent SPA
The fastest way to build a segregated component based front end for software development.
React is a JavaScript library created by Facebook and Instagram to build user interfaces. It allows developers to create fast user interfaces easily through components. React uses a virtual DOM to update the real DOM efficiently. Some major companies that use React include Facebook, Yahoo!, Airbnb, and Instagram. React is not a complete framework but rather just handles the view layer. It uses a one-way data binding model and components to build user interfaces.
React (or React Js) is a declarative, component-based JS library to build SPA(single page applications) which was created by Jordan Walke, a software engineer at Facebook. It is flexible and can be used in a variety of projects.
This document provides an introduction to React.js, including:
- React is a JavaScript library for building user interfaces and was developed by Facebook. It is the VIEW component in MVC architecture.
- Key features and benefits of React include being fast, modular, scalable, flexible, and popular due to its employability. Large companies like Facebook use React.
- Core concepts of React include JSX, components, unidirectional data flow, and the virtual DOM which improves performance compared to traditional frameworks. Components are reusable pieces that make up the entire application.
React JS is a JavaScript library for building user interfaces. It uses virtual DOM and one-way data binding to render components efficiently. Everything in React is a component - they accept custom inputs called props and control the output display through rendering. Components can manage private state and update due to props or state changes. The lifecycle of a React component involves initialization, updating due to state/prop changes, and unmounting from the DOM. React promotes unidirectional data flow and single source of truth to make views more predictable and easier to debug.
React is a declarative, efficient, and flexible JavaScript library for building user interfaces. It uses virtual DOM which improves performance and can render on both client and server. React encourages a component-based approach where UI is broken into independent reusable pieces that accept external data through properties. Components manage their own state which allows the UI to update over time in response to user input. This makes React code more predictable and easier to debug than traditional two-way data binding.
The document discusses key features of ECMAScript 6 (ES6), including:
- Default parameters, template literals, multi-line strings, spread operator, and enhanced object literals which add concise syntaxes.
- Arrow functions which provide a shorter syntax for writing anonymous functions.
- Block-scoped constructs like let and const that add block scoping to variables and constants.
- Classes which provide a cleaner way to define constructor functions and objects.
- Hoisting differences between function declarations and class declarations.
- Using ES6 today by compiling it to ES5 using a tool like Babel.
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
React is a JavaScript library for building user interfaces that uses a virtual DOM for improved performance. It uses a one-way data flow and declarative components. The virtual DOM allows React to efficiently update the real DOM by only making necessary changes. Components in React encapsulate elements and can have state and props. JSX is recommended for writing React components and compiles to plain JavaScript.
Tutorial Videos: https://www.youtube.com/playlist?list=PLD8nQCAhR3tQ7KXnvIk_v_SLK-Fb2y_k_
Day 1 : Introduction to React, Babel and Webpack
Prerequisites of starting the workshop ( Basic understanding of Node & Express )
What is Virtual DOM?
What is React and why should we use it?
Install and set up React:
a-Using create-react-app
b-From scratch using Babel and Webpack. We will use Webpack Dev Server.
Day 2 : React Basic Concepts
Types of Components: Class-based and Functional based Components
Use of JSX
Parent, Child, and Nested Components
Difference between State and Props
Create and Handle Routes
Component Lifecycle Methods
Create a form and handling form inputs
Use of arrow functions and Spread Operator
Day 3: Advanced Concepts in React
Use of Refs
What are Higher Order Components( HOC )?
How to use HOC
Understanding Context in React
In this presentation, Prashant Sharma of Valuebound has talked about ReactJS - a JavaScript library for building user interfaces. Check out the agendas to know what is there for you.
----------------------------------------------------------
Get Socialistic
Our website: http://valuebound.com/
LinkedIn: http://bit.ly/2eKgdux
Facebook: https://www.facebook.com/valuebound/
Twitter: http://bit.ly/2gFPTi8
Introduction to React JS for beginners | Namespace ITnamespaceit
React is a JavaScript library for building user interfaces using reusable components. It is used to create single page applications that dynamically update the current page with new data from the server. React uses a component-based approach and one-way data binding to build interfaces simply and allow for easy testing. Key concepts in React include components, props, state, lifecycles, hooks, JSX, and the virtual DOM. Major companies using React include Facebook, Netflix, Instagram, and WhatsApp.
ReactJS is arguably the most popular Javascript framework around for web development today. With more and more teams exploring and adopting React, here is TechTalks presentation elaborating fundamentals of React, in a code along session
- 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.
React js is a free and open-source front-end JavaScript library for building user interfaces based on UI components. It allows creating reusable UI components that can be nested to build complex applications. A React component may maintain internal state and re-render when data changes. React uses a declarative paradigm that makes code more predictable and easier to debug.
To use React, install Node packages and create a new project using create-react-app. Components let you break up the UI into reusable pieces responsible for rendering HTML. Components can be stateful class components or stateless function components. Components can be created using ES6 class syntax or function syntax and can be nested. Choosing between class and function depends on requirements like using
This document introduces React, describing it as a JavaScript library for building user interfaces by rendering components rather than mutating the DOM directly. It discusses how React uses a virtual DOM for fast re-rendering, building components instead of templates, and the use of JSX syntax to write HTML-like code. Components have state and props, and the whole app re-renders when state changes to guarantee updates.
React is a JavaScript library for building user interfaces. It is not a full framework and only handles the view layer. React uses a component-based approach where UI is broken into independent, reusable pieces. Components render HTML and have their own internal state. This makes components predictable and easier to debug. However, React alone is not enough to build full applications and must be used with other libraries for functionality like data fetching and routing. While React takes more time to learn initially, it can improve development speed and code quality for larger teams through its patterns and emphasis on component design.
ReactJs is a JavaScript library for building user interfaces that uses components and a virtual DOM for efficient updates. It is intended to make development of UI components easy and modular. React implements unidirectional data flow and uses components, a virtual DOM, JSX syntax, and isomorphic rendering to provide a declarative and efficient way to build user interfaces.
The document summarizes Kiran Abburi's presentation on React. It covers:
1. The agenda includes basics of React, composition, data flow, JSX, React APIs, and building a todo app.
2. React is a JavaScript library for building user interfaces and uses a component-based approach to build encapsulated pieces.
3. Data in React flows in a uni-directional way through properties (props) and state, where props are passed from parent to child components and state is internal to a component.
2016 is going to be the year of Virtual DOM. React.js one of the most popular implementation of Virtual DOM. But this time we won't focus on React.js. We will be focusing on what is the concept of Virtual DOM, what's the benefits, and how to use it without React.js. All of those concepts will help you understand this newest DOM manipulation technique and better work with any Virtual DOM implementations such React.js.
Introduction to the Spring Framework:
Generar description
IoC container
Dependency Injection
Beans scope and lifecycle
Autowiring
XML and annotation based configuration
Additional features
This document provides an introduction to ReactJS including what it is, its key features, and how it works. Some main points:
- ReactJS is a UI library built by Facebook that uses a virtual DOM to selectively update the browser DOM and improve performance.
- It allows building of interactive and reusable UI components in a declarative way.
- React uses a one-way data flow and unidirectional data binding which keeps complexity low.
- Components are the core building blocks and can be composed to build UIs in a modular way.
- The virtual DOM enables fast re-renders by only updating parts of the real DOM that changed.
React (or React Js) is a declarative, component-based JS library to build SPA(single page applications) which was created by Jordan Walke, a software engineer at Facebook. It is flexible and can be used in a variety of projects.
This document provides an introduction to React.js, including:
- React is a JavaScript library for building user interfaces and was developed by Facebook. It is the VIEW component in MVC architecture.
- Key features and benefits of React include being fast, modular, scalable, flexible, and popular due to its employability. Large companies like Facebook use React.
- Core concepts of React include JSX, components, unidirectional data flow, and the virtual DOM which improves performance compared to traditional frameworks. Components are reusable pieces that make up the entire application.
React JS is a JavaScript library for building user interfaces. It uses virtual DOM and one-way data binding to render components efficiently. Everything in React is a component - they accept custom inputs called props and control the output display through rendering. Components can manage private state and update due to props or state changes. The lifecycle of a React component involves initialization, updating due to state/prop changes, and unmounting from the DOM. React promotes unidirectional data flow and single source of truth to make views more predictable and easier to debug.
React is a declarative, efficient, and flexible JavaScript library for building user interfaces. It uses virtual DOM which improves performance and can render on both client and server. React encourages a component-based approach where UI is broken into independent reusable pieces that accept external data through properties. Components manage their own state which allows the UI to update over time in response to user input. This makes React code more predictable and easier to debug than traditional two-way data binding.
The document discusses key features of ECMAScript 6 (ES6), including:
- Default parameters, template literals, multi-line strings, spread operator, and enhanced object literals which add concise syntaxes.
- Arrow functions which provide a shorter syntax for writing anonymous functions.
- Block-scoped constructs like let and const that add block scoping to variables and constants.
- Classes which provide a cleaner way to define constructor functions and objects.
- Hoisting differences between function declarations and class declarations.
- Using ES6 today by compiling it to ES5 using a tool like Babel.
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
React is a JavaScript library for building user interfaces that uses a virtual DOM for improved performance. It uses a one-way data flow and declarative components. The virtual DOM allows React to efficiently update the real DOM by only making necessary changes. Components in React encapsulate elements and can have state and props. JSX is recommended for writing React components and compiles to plain JavaScript.
Tutorial Videos: https://www.youtube.com/playlist?list=PLD8nQCAhR3tQ7KXnvIk_v_SLK-Fb2y_k_
Day 1 : Introduction to React, Babel and Webpack
Prerequisites of starting the workshop ( Basic understanding of Node & Express )
What is Virtual DOM?
What is React and why should we use it?
Install and set up React:
a-Using create-react-app
b-From scratch using Babel and Webpack. We will use Webpack Dev Server.
Day 2 : React Basic Concepts
Types of Components: Class-based and Functional based Components
Use of JSX
Parent, Child, and Nested Components
Difference between State and Props
Create and Handle Routes
Component Lifecycle Methods
Create a form and handling form inputs
Use of arrow functions and Spread Operator
Day 3: Advanced Concepts in React
Use of Refs
What are Higher Order Components( HOC )?
How to use HOC
Understanding Context in React
In this presentation, Prashant Sharma of Valuebound has talked about ReactJS - a JavaScript library for building user interfaces. Check out the agendas to know what is there for you.
----------------------------------------------------------
Get Socialistic
Our website: http://valuebound.com/
LinkedIn: http://bit.ly/2eKgdux
Facebook: https://www.facebook.com/valuebound/
Twitter: http://bit.ly/2gFPTi8
Introduction to React JS for beginners | Namespace ITnamespaceit
React is a JavaScript library for building user interfaces using reusable components. It is used to create single page applications that dynamically update the current page with new data from the server. React uses a component-based approach and one-way data binding to build interfaces simply and allow for easy testing. Key concepts in React include components, props, state, lifecycles, hooks, JSX, and the virtual DOM. Major companies using React include Facebook, Netflix, Instagram, and WhatsApp.
ReactJS is arguably the most popular Javascript framework around for web development today. With more and more teams exploring and adopting React, here is TechTalks presentation elaborating fundamentals of React, in a code along session
- 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.
React js is a free and open-source front-end JavaScript library for building user interfaces based on UI components. It allows creating reusable UI components that can be nested to build complex applications. A React component may maintain internal state and re-render when data changes. React uses a declarative paradigm that makes code more predictable and easier to debug.
To use React, install Node packages and create a new project using create-react-app. Components let you break up the UI into reusable pieces responsible for rendering HTML. Components can be stateful class components or stateless function components. Components can be created using ES6 class syntax or function syntax and can be nested. Choosing between class and function depends on requirements like using
This document introduces React, describing it as a JavaScript library for building user interfaces by rendering components rather than mutating the DOM directly. It discusses how React uses a virtual DOM for fast re-rendering, building components instead of templates, and the use of JSX syntax to write HTML-like code. Components have state and props, and the whole app re-renders when state changes to guarantee updates.
React is a JavaScript library for building user interfaces. It is not a full framework and only handles the view layer. React uses a component-based approach where UI is broken into independent, reusable pieces. Components render HTML and have their own internal state. This makes components predictable and easier to debug. However, React alone is not enough to build full applications and must be used with other libraries for functionality like data fetching and routing. While React takes more time to learn initially, it can improve development speed and code quality for larger teams through its patterns and emphasis on component design.
ReactJs is a JavaScript library for building user interfaces that uses components and a virtual DOM for efficient updates. It is intended to make development of UI components easy and modular. React implements unidirectional data flow and uses components, a virtual DOM, JSX syntax, and isomorphic rendering to provide a declarative and efficient way to build user interfaces.
The document summarizes Kiran Abburi's presentation on React. It covers:
1. The agenda includes basics of React, composition, data flow, JSX, React APIs, and building a todo app.
2. React is a JavaScript library for building user interfaces and uses a component-based approach to build encapsulated pieces.
3. Data in React flows in a uni-directional way through properties (props) and state, where props are passed from parent to child components and state is internal to a component.
2016 is going to be the year of Virtual DOM. React.js one of the most popular implementation of Virtual DOM. But this time we won't focus on React.js. We will be focusing on what is the concept of Virtual DOM, what's the benefits, and how to use it without React.js. All of those concepts will help you understand this newest DOM manipulation technique and better work with any Virtual DOM implementations such React.js.
Introduction to the Spring Framework:
Generar description
IoC container
Dependency Injection
Beans scope and lifecycle
Autowiring
XML and annotation based configuration
Additional features
This document provides an introduction to ReactJS including what it is, its key features, and how it works. Some main points:
- ReactJS is a UI library built by Facebook that uses a virtual DOM to selectively update the browser DOM and improve performance.
- It allows building of interactive and reusable UI components in a declarative way.
- React uses a one-way data flow and unidirectional data binding which keeps complexity low.
- Components are the core building blocks and can be composed to build UIs in a modular way.
- The virtual DOM enables fast re-renders by only updating parts of the real DOM that changed.
The document discusses React's virtual DOM and how it allows for more efficient DOM updates compared to directly manipulating the real DOM. It explains that the virtual DOM is an in-memory representation of the real DOM that allows React to calculate efficient DOM changes before applying them to the real DOM. This avoids unnecessary re-renders and improves performance. It also describes how React uses a diff algorithm and DOM traversal with breadth-first search to determine the minimal number of operations needed to transform the virtual DOM before updating the real DOM in a batched way.
React JS is a JavaScript library for building reusable UI components. It uses a virtual DOM for efficient rendering. Components are the building blocks of React, and can be either functional or class-based. Functional components are simpler while class components can maintain state. Props are passed down from parent to child components while state is local. The virtual DOM improves performance by only updating the real DOM with actual changes.
Getting Started with React, When You’re an Angular DeveloperFabrit Global
If you’re an Angular developer looking into expanding your stack with React, this presentation will come in handy! It is an insightful introduction to React in comparison with Angular, where you will find all the basic knowledge you need to get started.
We’ll deep-dive into tech details such as:
● Virtual DOM
● JSX
● Functional vs Class-Based Components
● State
● How to Style
● Requests
● Upgrading: Redux and Flux and more!
You can also check out the full article version here: https://blog.fabritglobal.com/product-development/getting-started-with-react-angular-developer/
React JS is a declarative, efficient, and flexible JavaScript library for building reusable UI components. It uses a virtual DOM which works like a lightweight copy of the real DOM to improve performance by only updating what changes. Components are independent and reusable bits of code that serve the same purpose as functions but return HTML. There are two main types of components - functional components which are simple functions, and class components which can maintain their own state and work together.
Learn reactjs, how to code with example and general understanding thinkwikHetaxi patel
React js for beginners, learn react js with basic code setup and code examples with general understanding. beginners guide for basic react js programming with examples
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.
The document provides tips for improving front-end performance, including:
- Put CSS in external files rather than <body> to avoid blocking rendering.
- Only include JavaScript needed for initial page rendering in <head>, put other scripts before </body>.
- Avoid redirects and unnecessary DOM manipulations, which slow performance.
- Preload components, clone DOM nodes for manipulation rather than updating live DOM, and cache frequently used values to improve efficiency.
This document provides an overview of React, a JavaScript library for building user interfaces. It discusses what React is, why it is useful, when to use it, and its key features and components. React allows building of reusable UI components in a declarative way. It uses a virtual DOM for better performance and can render on both client and server sides. Key advantages include high performance with large data changes, reusability, and ease of building large, complex UIs. The document also provides examples of building a simple React app in steps and references for further information.
This document discusses several React patterns including compositional components, higher order components, render props, presentational and container components, child aware components, and child enhancing components. Compositional components allow code reuse through composition instead of inheritance. Higher order components accept a component and return an enhanced one. Render props share code through a prop whose value is a function. Presentational components focus on UI while container components manage data and logic. Child aware components interrogate child components' data through props and selectors. Child enhancing components add functionality to child components.
React components are the building blocks of React applications. There are two types of components in React - functional components and class components. Functional components are simple JavaScript functions that return JSX, while class components are ES6 classes that can maintain internal state and pass data between other components. Components render reusable pieces of UI and the entire application UI is composed of different individual components.
Mildaintrainings offers advanced ReactJS Interview Questions 2019 that helps you in cracking your interview & acquire your dream career as ReactJS Developer. Visit in this link :- https://mildaintrainings.com/blogs/react-js-interview-questions-answers/
If you want to get trained in React and wish to develop interesting UI’s on your own, then check out the ReactJS with Redux Certification Training by MildainTrainings, a trusted online learning company with a network of more than 50,000 satisfied learners spread across the globe.
My React TechTalk with Jordan open source association on Sep 13-2017 @Zinc , KHBP.
Session source code :
https://github.com/ali-sao/Better-web-apps-with-react-redux-.git
Globant development week / React Redux RorkshopGlobant
This document summarizes a workshop on React, React Router, and Redux. The workshop will include both theoretical and practical sections on each topic. Attendees can expect to learn about and code examples for each technology. Respect and limiting phone distractions are expected from attendees. The workshop will introduce React basics like components, props, state, and lifecycle methods before covering React Router for routing and Redux for state management. Hands-on coding sessions will use Create React App to scaffold projects and demonstrate integrating React Router and Redux.
This document provides an overview of key concepts in Vue.js, including:
- What Vue is and how it can be used as both a library and framework.
- The Vue lifecycle and lifecycle events.
- How to create reusable components with props, events, and a single root element.
- The differences between data, props, computed properties, and methods.
- Special properties like $root, $ref, $emit, and how to use @ and : bindings.
- The nextTick method for deferring code until after DOM updates.
- Common tools used with Vue like NPM, Babel, Webpack, and Vue CLI.
As applications grow in complexity, web developers and front-end developers all suffer the hassle of building and maintaining complex web applications; managing and maintaining consistency of application state. This presentation goes through what's special about React and Redux.
This was part of JOSA TechTalks project within Jordan Open Source Association, presented by Ali Sa'o and Omar Abdelhafith.
This document provides an overview and introduction to React.js, including:
- React uses components and states, with components being reusable parts of the interface and states allowing components to re-render when data changes.
- JSX allows embedding XML-like syntax in JavaScript and makes code more readable.
- Props are used to pass data between parent and child components, while state stores internal data of a component that may change.
- The document provides examples of building a simple component to track saves or favorites of a home listing as state, and discusses organizing data flow through components.
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.
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
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
Discover top-tier mobile app development services, offering innovative solutions for iOS and Android. Enhance your business with custom, user-friendly mobile applications.
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.
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
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!
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.
The Department of Veteran Affairs (VA) invited Taylor Paschal, Knowledge & Information Management Consultant at Enterprise Knowledge, to speak at a Knowledge Management Lunch and Learn hosted on June 12, 2024. All Office of Administration staff were invited to attend and received professional development credit for participating in the voluntary event.
The objectives of the Lunch and Learn presentation were to:
- Review what KM ‘is’ and ‘isn’t’
- Understand the value of KM and the benefits of engaging
- Define and reflect on your “what’s in it for me?”
- Share actionable ways you can participate in Knowledge - - Capture & Transfer
The Microsoft 365 Migration Tutorial For Beginner.pptxoperationspcvita
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
2. A first look
Let’s see how is the browser workflow, to render a
web page, before we go into deeper details
Mozilla's Gecko rendering engine main flow
Webkit rendering engine main flow
http://taligarsiel.com/Projects/howbrowserswork1.htm#Parsing_general
Collected from the MDN documentation
3. The basic data flow
1. The rendering engine will start parsing the HTML document and turn the tags to DOM nodes in a
tree called the "content tree”
2. The styling information together with visual instructions in the HTML will be used to create
another tree - the render tree.
3. After the construction of the render tree it goes through a "layout" process. This means giving
each node the exact coordinates where it should appear on the screen.
4. the render tree will be traversed and each node will be painted using the UI backend layer.
http://taligarsiel.com/Projects/howbrowserswork1.htm#Parsing_generalData collected from:
4. Since DOM is represented as a tree structure,
the first render into the DOM is pretty quick!
6. Mozilla's Gecko rendering engine main flow
Webkit rendering engine main flow
Can you see something in common on the
main browsers workflow after the tree is
processed and attached into the DOM?
7. Mozilla's Gecko rendering engine main flow
Webkit rendering engine main flow
Can you see some thing in common on the
main browsers workflow, after the tree is
processed e anexada no DOM?
8. Since DOM is represented as a tree structure, the first
render into the DOM are pretty quick but the changed
element, and its children have to go through Reflow/
Layout stage and then the changes have to be Re-
painted which takes a long time. Therefore the more
items you have to reflow/repaint, the slower your app
becomes.
9. it's all about rendering
https://www.youtube.com/watch?v=9-ezi9pzdj0
10. VDOM
"it’s a virtual tree which is kept in the browser memory
and updated in runtime and therefore minimize those
two stages (reflow/repaint) and thereby having a better
performance for a big and complex app”
—Nevinha
11. How does it work?
When we change something in our Virtual DOM Tree, we get a new
Virtual Tree. The algorithm compares these two trees (old and new),
finds differences and makes only the necessary changes on the DOM,
so at the end it will reflect the virtual DOM.
12. How is it divided?
1. Node mount representation — React uses JSX and CreateElement
function in order to put it on the virtual tree later. (here) and (here)
2. Mount of the initial virtual tree — It’s possible on web because of
react-dom. (here)
3. Append the VDOM into the DOM — It can be done on the same
function that mounts the virtual tree.
4. For each changes on the virtual tree, the VDOM will compare the
old tree with the new one, in order to see what have been changed
and just re-render the necessary nodes, if and only if it’s necessary.
13. Node Representation
Basically an element is represented on the VDOM as an object that
contains the following attributes:
• type — The type of the element, which can be a tag name, a function
component (state less) or a class component (state full)
• props or attributes — The attributes of the tag or the custom props
• children — The children that are inside the tag or your component
15. Stay tuned, it’s react based
https://github.com/facebook/react/blob/master/packages/react/src/ReactElement.js#L312
The next slides will be based on the source code of React.js v16.11.0
which can be founded on the link bellow:
16. BUT DON’T WORRY ABOUT THE VERSION, IT DOESN'T CHANGE TO
OFFEN 😂
17. See the node representation that
we’ve just talked few minutes ago?
18. Mount of the props, if they are custom props, if they
aren’t later react adds then on the element before
append the element into the tree
19. Also the default props that we define on a
component, they are handled on this function.
20. Them it returns the a ReactElement ready to use it inside an
existent component or append into the VDOM at the end of the
createElement function
22. Mount of the initial virtual tree
As you already know the basic idea to represent and mount a virtual
node, let’s suppose that we have defined a function called
createElement
Obs: This code doesn’t transpile, because it is pseudo code
23. As you already have the virtual element creation done, mount
the tree is really easy… you just need to create a function
that get the node representation as argument node and use
recursion to get its virtual children
PS: ignore that we could receive a function or class component on node.type, we will do it later.
24. Append the VDOM into the DOM
This is the easiest part of the VDOM algorithm, it just uses a function
that takes a component and a container as argument and append the
virtual component, which contains the VTree and append it into the
container.
25. Obs: This code doesn’t transpile, because it is pseudo code.
26. Compare changes - DIFF
This is the most important part of the virtual DOM algorithm, it is where
you application get its performance improvement. So basically we
need to write an algorithm, that will compare two virtual trees — old
and new — and make only necessary changes into real DOM.
27. How react does it?
Actually who is responsible for the DIFF is the react-dom package, on
this link, basically it does diff for the props of a current VTree node,
children and texts.
Let’s see the logic behind the DIFF algorithm that react-dom uses
internally
28. We will handle the following cases
• There isn’t old node at some place — so node was added and we
need to appendChild(…) that
• There is no new node at some place — thus node was deleted and
we need to removeChild(…)
• Nodes are the same — so we need to go deeper and diff child nodes
We also have the diff of the state and props of a vnode but it won’t be
covered on this presentation.
29. First things first
We’ll separate a function that does all the magic for us, which we will
call updateElement.
This function will be recursive on the future ;)
30. There isn’t old node at some place
What is a pretty straightforward operation
32. Nodes are the same, so we need to go deeper
At this part, we’ll need to adopt the recursion
strategy in order to go deeper into the Tree
33. First, we’ll create a function that takes two
nodes and see if they are equals
34. Then we call the changed function inside the update
element function, if the direct children has been
changed, we need to replace the old for the new one
35. If anything changes between the new and the old
node, it means that we need to go deeper if the new
node is a tag or a component.