Love it or hate it, JavaScript is playing an increasingly important role in the next generation of web and mobile apps. As code continues to move from the server to the client, JavaScript is being used to do more than simple HTML manipulation. Be prepared for this transition and make sure the JavaScript you write is optimized and ready to perform on desktops and devices! In this session, you will learn ten practical tips that you can use today to write faster, more maintainable, memory friendly JavaScript.
The document summarizes changes to the IGCSE ICT examination and certification in the UK. It discusses replacing coursework with practical exams, emulating exam tasks in lessons, focusing on software skills and revising lessons to prepare students. It also notes the exam will assess computer systems, networks, data types and other topics and links to their school's A-Level ICT course.
The document discusses the key components and functions of a basic computer system. It begins by defining a computer as a machine that can perform programmed instructions to process digital data and produce outputs. It then describes the main elements of a computer system as the hardware, software, data, people, connectivity and procedures. The hardware components discussed include the internal central processing unit (CPU) and memory, as well as external input and output devices like keyboards, monitors and printers. The document also provides examples of common computer hardware components and their functions within a basic computer system.
The document discusses various components of computer systems. It describes hardware components like the system unit, motherboard, processor, RAM, ROM, video cards, sound cards, and internal storage drives. It also discusses software types like system software and application software. Emerging technologies discussed include artificial intelligence, vision enhancement technologies, robotics, and quantum cryptography.
The document provides an introduction to web technology concepts including:
- The basic types of websites such as e-commerce, blogs, and informational sites.
- Websites can be used for purposes like searching, education, business, and entertainment.
- Web hosting involves companies that provide server space and services to host websites.
- Other concepts covered include domains, static vs. dynamic websites, HTTP vs. HTTPS, front-end and back-end development, and search engine optimization (SEO).
Cookies and sessions allow servers to store and retrieve information about users across multiple page requests that would otherwise be stateless. Cookies store data in the user's browser, while sessions store data on the server. Cookies have limits on size and number, while sessions can store larger objects but expire when the browser closes. PHP provides functions like setcookie() and $_SESSION to easily manage cookies and sessions for maintaining state in web applications.
The document summarizes the basic organization of a computer system. It describes that while computers have changed over time, the core logical structure has remained the same. The five main units that take input data and convert it to useful information are: 1) input unit, 2) storage unit, 3) processing unit, 4) control unit, and 5) output unit. The storage unit has two types - primary storage (memory) and secondary storage (disks/tapes), which store data temporarily and permanently respectively. The processing unit performs calculations and operations on data stored in primary storage. The control unit manages and coordinates the entire computer system.
Monitoring and Supporting Data Conversion.pdfseifusisay06
This document provides information on monitoring and supporting data conversion. It defines key concepts like data, data conversion, and data types. It also describes the data conversion process including analyzing source data, understanding data characteristics, data modeling methodologies, data cleaning, transformation, integration, sorting, updating and exporting data. The document outlines validating data conversion systems through ensuring data accuracy and integrity. It also stresses the importance of backing up data before and after conversion and identifying the proper data conversion tools.
The document discusses file management and various utilities used for organizing, viewing, and maintaining files and the operating system. It describes the hierarchical structure of directories, drives, folders and subfolders used to organize files. It also discusses naming conventions for files including allowed/prohibited characters and filename extensions. Various utility programs are covered like disk cleanup and defragmenter for system maintenance, and display utilities for customizing desktop settings.
This document provides an overview of data resource management and file organization concepts. It discusses key terms like binary, bit, byte, field, record, and file. It explains different file organization methods like traditional file environments and database management systems. It also summarizes different types of databases like relational, hierarchical, network, and object-oriented databases. Finally, it discusses database design, management, querying, distribution, warehousing, and trends like linking databases to the web.
This document contains a student's answers to questions about uses of computers. It discusses how mainframe systems are limited in the number of tasks they can perform due to their specialized and expensive nature. At home, the most popular use of personal computers is for gaming, while businesses use them for tasks like word processing, accounting, and running spreadsheets. The military uses computers in many roles, from basic measurement and calculation to core functions in almost every military branch. Computer technologies also help train surgeons through interactive programs and virtual reality simulations that allow practicing complex procedures without risking lives.
The document provides an introduction to computers including definitions, common terminology, parts of a computer, peripheral devices, the development of computers, classifications of computers, areas of use, and functions and purposes of computers. It was prepared by Maurice Atika Nyamoti and contains information to help understand basic computer concepts.
The document provides an introduction to the history and development of the Internet and World Wide Web. It discusses the origins of ARPANET in the 1960s, the development of protocols like TCP and IP, and the invention of the World Wide Web in the 1980s and 1990s which led to widespread commercial use of the Internet. It also summarizes key technologies and standards like HTML, HTTP, and the role of organizations like W3C.
The document discusses different approaches to data resource management. It describes traditional file processing, where data is organized across independent files, leading to issues like data redundancy and lack of integration. The modern approach is database management, which consolidates organizational data into centralized databases managed by a database management system (DBMS). The DBMS allows many applications to access integrated data and maintains data quality. The chapter also covers logical and physical database design, different database structures, and types of databases like operational, distributed, external, and data warehouses.
Lecture 1 accounting information system, an overviewHabib Ullah Qamar
An overview of M.Com Part 2 course of Accounting information system and e commerce of the university of the Punjab Lahore. Introduction to AIS, components, importance and functions of AIS
Web servers are software applications that deliver web content accessible over the Internet or intranets. They host websites, files, scripts, and programs and serve them using HTTP and other protocols. Common web servers include Apache, Microsoft IIS, and Sun Java. Tomcat is an open source web server and servlet container. It implements Java servlets and JSP specifications, providing a Java HTTP environment. Tomcat's main components are Catalina for servlet handling, Coyote for HTTP connections, and Jasper for JSP compilation. While Apache is generally better for static content, Tomcat can be used with Apache for Java/JSP applications.
This document discusses the strategic use of information technology (IT) and information systems (IS) in businesses. It defines key terms like digital economy, IT, and IS. It also describes how IS are made up of different components including hardware, software, databases, and networks. Furthermore, it discusses how IS support key business functions and are interrelated within an organization. IS must be aligned with business strategy and processes to provide value.
Hardware devices can be categorized as input, output, or storage. Internal hardware includes the central processing unit (CPU), motherboard, random access memory (RAM), read only memory (ROM), graphics card, and sound card. The CPU processes data and runs instructions. The motherboard connects components. RAM stores active programs and data, while ROM permanently stores basic instructions. External devices include monitors, keyboards, mice, printers, and cameras. Storage devices like hard disk drives and solid state drives non-volatile store data on a storage medium.
This document provides an introduction and overview of basic computer concepts for a computer essentials course. It defines what a computer is, explaining that computers follow user instructions quickly as calculators. It also defines the components of a computer system and differences between hardware and software. Key concepts covered in 3 sentences or less include:
Computers consist of physical hardware that executes software instructions to perform tasks. Hardware includes input devices like keyboards and mice and output devices like monitors and printers. Memory and storage devices are also explained as important components for running programs and saving files.
The Rich Standard: Getting Familiar with HTML5Todd Anglin
HTML 5 may take some time to find full support in all major browsers, but you may be surprised to discover how many of HTML 5’s features are available today! HTML 5 is the next generation standard for web applications, and it promises to give plug-in based RIAs a serious challenge. In this demo heavy session, you’ll see HTML 5 in action and learn what you can do with today’s browser support for the new standard. If you’re building rich web applications and you’ve never touched HTML 5, this session is a must see.
Let’s talk about JavaScript - WebElementMarian Rusnak
Overview of what is possible with JavaScript in 2017.
Video: https://youtu.be/c3wAj9mB-BE
Demonstrates the popularity of JavaScript among developers and enterprises. Also, describes various software types and platforms where it is possible to use JavaScript such as Web Browser, Node.js, Drones, Robots, Virtual Reality, and more. Lastly it gives a short look at the future of JavaScript.
High Performance Kick Ass Web Apps (JavaScript edition)Stoyan Stefanov
The document discusses techniques for improving the performance of web applications, with a focus on JavaScript. It covers minimizing HTTP requests through techniques like combining files and using data URIs. It also discusses gzipping, minifying, caching strategies, avoiding blocking resources, and JavaScript optimizations. The overall message is that performance matters for user experience and conversion rates, and there are many ways to optimize the critical rendering path and page load times through smart coding practices.
This presentation will give you a brief background to JavaScript, what it is and where it comes from. Then it will walk you through general pitfalls, best practices and more advanced topics such as object-orientation, scope and closures.
JavaScript and Web Standards Sitting in a TreeJenn Lukas
The document contains repeated messages stating "Your site should work without JavaScript" and other accessibility guidelines such as making the site keyboard accessible, not interrupting user workflows, making forms easy to use, coding for the appropriate audience, not letting the site look broken by loading scripts last, letting users know of changes, sharing content, avoiding gratuitous animation, and declaring the site as an application. The overall message is about the importance of accessibility and usability.
Ajax [Asunchronous HTTP request ] - A Deep Introduction About Ajax Technology - Lets Take a Glance About Ajax ,Where it's use | Whats the purpose of Ajax in Web Application Developement . Bacis of Ajax Technology + Coding Tips ..
The document discusses different approaches to using JavaScript libraries, including plug-and-play widgets, libraries that require some coding, and writing raw JavaScript from scratch. It then examines popular open-source JavaScript libraries like Prototype, jQuery, Yahoo UI, and Dojo, comparing their features, functionality, and widgets. The ideal library should have a robust core feature set along with user interface widgets, active development and support, and good documentation.
The document provides an overview of fundamental JavaScript concepts such as variables, data types, operators, control structures, functions, and objects. It also covers DOM manipulation and interacting with HTML elements. Code examples are provided to demonstrate JavaScript syntax and how to define and call functions, work with arrays and objects, and select and modify elements of a web page.
The document discusses virtual machines and JavaScript engines. It provides a brief history of virtual machines from the 1970s to today. It then explains how virtual machines work, including the key components of a parser, intermediate representation, interpreter, garbage collection, and optimization techniques. It discusses different approaches to interpretation like switch statements, direct threading, and inline threading. It also covers compiler optimizations and just-in-time compilation that further improve performance.
The JavaScript programming language is a multi-paradigm language that is misunderstood due to its name, design errors in early implementations, and use in web browsers. It is a functional language that uses objects, prototypes, and closures. Values in JavaScript include numbers, strings, Booleans, objects, null, and undefined. All other values are objects.
JavaScript - An Introduction is a beginner's guide to JavaScript. It starts with very basic level and goes to intermediate level. You'll be introduced with every language constructs, Event handling, Form handling and AJAX which is supported by JavaScript with XMLHttpRequest object. This XHR object is discussed in enough detail so that you can understand how the underlying AJAX functionality works in jQuery. At the end it discusses advance concepts and library build on/around JavaScript.
This document provides a summary of the AngularJS framework. It discusses the following key points in 3 sentences:
1. AngularJS aims to make HTML better suited for building applications by teaching the browser new syntax like directives. This allows more of the application logic to be handled in the declarative HTML instead of JavaScript code.
2. Angular follows an MVC pattern where the controller contains the business logic and data, the view displays the data through bindings, and the scope acts as a synchronization mechanism between the model and view.
3. Features like data binding, directives, dependency injection and routing allow building dynamic and interactive single-page applications by synchronizing the model and view through declarative templates and separating concerns
AngularJS is a JavaScript framework for building dynamic web applications. It augments HTML with custom attributes and directives to bind data and behaviors to the DOM. Key features include two-way data binding, reusable components, dependency injection, routing, and templating. AngularJS uses an MVC or MVVM pattern, with scopes providing the view model. The framework enhances HTML, encourages test-driven development, and makes single page apps possible.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, boost mood, and enhance cognitive function. Staying physically active for at least 30 minutes each day is recommended for significant health benefits.
This document provides an overview of JavaScript basics including:
- The history and creation of JavaScript in 2 weeks by Brendan Eich.
- Language basics like syntax, variables, objects, functions, and inheritance.
- Tools for JavaScript development like Firebug and jsLint for debugging and linting.
- Best practices like unobtrusive JavaScript, namespaces, and automated testing.
- Resources for further learning JavaScript like books and websites.
Your Library Sucks, and why you should use it.Peter Higgins
This document discusses JavaScript libraries and proposes ideas for improving them. It argues that while libraries are useful, developers should understand JavaScript fundamentals first. Current libraries have inconsistent APIs and lack modularity. The document proposes a new "CommonBrowserJS" library with common standards, pure feature detection, and support for CommonJS modules to converge the best ideas from existing libraries. Developing a simple "has.js" library for feature detection could be a first step. Overall the document advocates for improving JavaScript libraries by standardizing APIs and reducing magic while embracing modern JavaScript practices.
The document provides guidelines for clean coding practices. It discusses the importance of avoiding duplicated logic, using descriptive variable and function names, adding comments only where needed to explain tricky logic, and following consistent formatting and naming conventions. It also advocates practices like refactoring code incrementally, testing software thoroughly including edge cases, and removing defective code when debugging rather than adding workarounds. The overall message is that clean code is important for code readability, adaptability, and long term maintenance of software projects.
Are you Java Developer? Are you currently in a project where Javascript language is used? Do you feel that something is wrong with this language, as it looks a bit like a Java, but acts completely differently (as almost as it was designed to be confusing and completely not deterministic)? Do you test or even TDD your Java code, but write your Javascript code as its 1996 all over again? Do feel that basically you are doing something wrong there, reinventing the wheel? Well, fear no more, since this lecture is here to help. We will start introducing key concepts of the language, showing that Javascript is to Java, as a ham is to hamburger. We will move later on to test driven development, showing how easy it is to test Javascript code with all the goodies we know from Java world. At the end we will finish introducing DI concepts in Javascript, so that you will never write code in the global namespace ever again. So the true question remains: are you ready to call yourself Javascript developer?
Bio: Software engineer, programmer, developer. Experienced with Java ecosystem. Currently having tons of fun at work with Scala, Akka, Apache Spark and distributed cloud computing.
The next version of JavaScript, ES6, is starting to arrive. Many of its features are simple enhancements to the language we already have: things like arrow functions, class syntax, and destructuring. But other features will change the way we program JavaScript, fundamentally expanding the capabilities of the language and reshaping our future codebases. In this talk we'll focus on two of these, discovering the the myriad possibilities of generators and the many tricks you can pull of with template strings.
What can be done with Java, but should better be done with Erlang (@pavlobaron)Pavlo Baron
Erlang excels at building distributed, fault-tolerant, concurrent applications due to its lightweight process model and built-in support for distribution. However, Java is more full-featured and is generally a better choice for applications that require more traditional object-oriented capabilities or need to interface with existing Java libraries and frameworks. Both languages have their appropriate uses depending on the requirements of the specific application being developed.
The document discusses Behavior Driven Development (BDD) testing in Go. It introduces the godog library for BDD testing but notes its limitations. A new library called gobdd is presented which aims to address those limitations by using Go's standard testing package, allowing debugging of tests, and passing data between steps via a context. Examples of using gobdd are provided. Future improvements like additional pre-defined steps and output formats are discussed.
jQuery - 10 Time-Savers You (Maybe) Don't Knowgirish82
This document discusses 10 time-saving techniques for jQuery and JavaScript:
1. Limit DOM traversal to improve performance.
2. Use chaining for cleaner code and better readability.
3. Be specific with selectors like :first-child to avoid universal selectors.
4. Understand events like .each(), .live(), and .delegate() and use appropriately.
5. Create DOM elements in memory then append for better performance.
6. Bind fewer events by checking the target of the event.
7. Choose events like .ready() and .load() carefully based on needs.
8. Think right-to-left for selectors except IDs
This document discusses JavaScript best practices for naming variables and functions, code formatting and style, scopes and closures, and class-like structures. It provides examples of how to use descriptive names, consistent formatting, closures to manage variable scopes, immediately invoked function expressions (IIFEs), and dataclass structures in Wakanda to define classes. Following these practices can improve code readability, maintainability and reduce bugs.
ES6 is Nigh is a presentation on the future of JavaScript. It discusses the history of JavaScript and why ES6 is important for advancing the language. The presentation outlines many new features being added in ES6, such as arrow functions, classes, modules, template strings, symbols, generators, and proxies. It emphasizes that ES6 is purely additive and introduces these features without breaking backwards compatibility.
Making JavaScript Libraries More ApproachablePamela Fox
A talk given at NotConf in Phoenix, Texas in 2012.
(Alternative title: Why nested ternary operators make me want to kick inanimate objects in the nuts.)
The document provides an introduction to developing complex front-end applications using HTML and JavaScript. It discusses how JavaScript modules can be organized in a way that is similar to frameworks like WPF and Silverlight using simple constructs like the module pattern. It also covers asynchronous module definition (AMD) and how modules can be loaded and dependencies managed using RequireJS. The document demonstrates unit testing jQuery code and using pubsub for loose coupling between modules. Finally, it discusses how CSS compilers like SASS can make CSS authoring more productive by allowing variables, nesting and mixins.
jQuery & 10,000 Global Functions: Working with Legacy JavaScriptGuy Royse
Long ago, in the late days of the first Internet boom, before jQuery, before Underscore, before Angular, there was a web application built by a large corporation. This application was written as a server-side application using server-side technology like Java or PHP. A tiny seed of JavaScript was added to some of the pages of this application to give it a little sizzle.
Over the ages, this tiny bit of JavaScript grew like kudzu. Most of it was embedded in the HTML in
This document discusses JavaScript and the Dojo toolkit. It emphasizes that JavaScript is very flexible and powerful on its own, beyond just manipulating the DOM. Dojo takes advantage of JavaScript's capabilities by providing utilities like pub/sub, object-oriented programming, function binding, and extending native prototypes. Overall, the key message is that JavaScript can do a lot more than people realize and libraries like Dojo help unlock its full potential.
The document discusses the beauty of JavaScript and its many features. It covers how JavaScript offers classless object-oriented programming and functional programming. It also discusses how JavaScript can run on both the client-side and server-side. The document provides examples of JavaScript syntax like variables, functions, objects, prototypes and more to demonstrate JavaScript's capabilities. It emphasizes that libraries help create abstractions and beautiful patterns in JavaScript code.
The document discusses the beauty of JavaScript and its many features. It covers how JavaScript offers classless object-oriented programming and functional programming. It also discusses how JavaScript can run on both the client-side and server-side. The document provides examples of JavaScript syntax like variables, functions, objects, inheritance through prototypes, and AJAX requests. It emphasizes how libraries help create abstractions and beautiful patterns in JavaScript code.
Defensive programming in Javascript and Node.jsRuben Tan
Various factors to consider when trying to adopt a defensive programming mindset, methodology and process. This is especially useful for teams working with node.js.
jQuery Tips and Trick by NagaHarish on 21 Jan 2012... For the Demos given in this slides refer
https://github.com/anubavam-techkt/jQuery-tricks-tips-nagaharish
Playing With Fire - An Introduction to Node.jsMike Hagedorn
node.js is an evented server-side Javascript framework powered by the Google V8 Javascript engine. It is a platform ideal for creating highly scalable web applications. It has the same simplicity of frameworks such as Sinatra, but is designed to be more peformant from the ground up. This performance is achieved by making all network I/O non blocking and all file I/O asynchronous. We will go over how that impacts the development experience, and walk through a simple web application. Javascript is foundational to this type of I/O because it is already evented by design. We will also take a brief look a similar evented frameworks such as ruby`s EventMachine.
NativeScript: Cross-Platform Mobile Apps with JavaScript and AngularTodd Anglin
Do you want to build native mobile apps for iOS and Android? Are you a web developer? Then NativeScript is the perfect framework for you. NativeScript is an open source framework for creating native mobile apps using the skills of the web developer: JavaScript, CSS and simple tag-based markup. Create rich, high-performance iOS and Android apps with 100% native UI using many of the skills you already have.
Topics covered include:
NativeScript framework core concepts and getting started
Accessing native device capabilities with JavaScript
Building native mobile apps with Angular 2
Common app patterns (login, settings, data bound list and more)
Styling NativeScript with CSS
Targeting specific devices and screens
Debugging and deploying to devices
There has never been a better (and easier) way for web developers to create native mobile apps.
[Slides from my 'Edge of the Web' workshop]
The web platform has evolved significantly over the last several years, giving developers more power than ever to create rich, interactive applications delivered via browsers. New capabilities in HTML, CSS and JavaScript paired with constantly updating browsers make it possible to do things on the web that used to be the exclusive domain of plugins and native apps. In this workshop, you’ll be introduced to some of the most powerful and useful techniques available to the modern web developer that will change the way you think about web app development.
The future of web app development is exciting, and these are the technologies that will underpin and drive that change. Don’t get left behind with IE8-era knowledge. Get ahead of the curve and master the edge of the web.
One of the great promises of HTML5 is that you can create software that runs everywhere. In many ways, HTML5 lives-up to this promise, but as with any evolving standard, support across different browsers and devices is inconsistent. To effectively adopt HTML5 today, developers must master the skills that fill-in the gaps and minimize the differences between HTML5 runtimes. In this session, you will learn the essential techniques needed to create HTML5 sites and apps that truly work everywhere.
You will learn:
• Learn four strategies for adopting HTML5
• Analyze the impact browsers have on HTML5 readiness & adoption
• Explore new HTML5 features and techniques for using in older browsers
Developing a Modern Mobile App StrategyTodd Anglin
Mobile apps are important. There is little debate of that. But how you build, maintain, and deploy mobile apps remains the source of great debate for CIOs and developers alike. Unfortunately, there is no "one size fits all" mobile app strategy, so it is critical to understand how to choose the right technology for the right app. In this session, we will explore the four key approaches for building mobile apps, and establish a framework that will help you develop a mobile app strategy guaranteed to help you select the right technology for your next project.
HTML5 and CSS3 have arrived and they are redefining rich, standards-based web development. Features previously the exclusive domain of browser plug-ins can now be added to web applications as easily as images. Understanding the new power that these standards define, as well as the rapidly increasing power and speed of JavaScript in modern browsers and devices is essential. These slides accompany a full-day workshop, where attendees are guided through the new features in HTML5 and CSS3, with special attention to how these technologies can be used today in new and old browsers.
Todd Anglin gave a presentation on HTML5 forms and input types. He discussed the new input types available like email, url, number and date/time. He demonstrated how to use these new input types and attributes like placeholder, required and pattern. Anglin also covered customizing the browser rendered inputs using shadow DOM and styling validation states with CSS. For older browsers without native support, he recommended polyfilling the new functionality with JavaScript.
50in50: Resources for HTML5, CSS3, & JavaScript DevelopersTodd Anglin
50in50 is a collection of curated resources for HTML5, CSS3, and JavaScript developers. It includes more than 50 links to the best tools and tutorials available for developers today.
Links to resources available in the slide notes.
Native apps are great, but if you want your app to reach as many people as possible, HTML5 is your ticket. In this session, we'll explore the different ways HTML5 can be used to build and deploy mobile apps, as well as the tools that can make the job easier.
HTML5 and CSS3 Techniques You Can Use TodayTodd Anglin
This document provides an overview of HTML5 and CSS3 techniques that can be used today, beginning with a brief history of HTML and CSS. It then discusses adoption strategies for new techniques, including using polyfills to enable support in older browsers. Specific techniques demonstrated include semantic HTML5 tags, video and audio, geolocation, local storage, HTML5 forms, and microdata. CSS3 techniques covered are selectors, color, fonts, borders and backgrounds, gradients, media queries, and animations. The document emphasizes that many new techniques can be used now across browsers with polyfills or alternate implementations for older browsers.
The explosion of HTML5-ready tablets and mobile devices has been one of the primary forces behind HTML5’s rapid coming of age. Virtually all modern devices with a web browser have broad support for the technologies defined by HTML5, like Video, Geolocation, Offline Apps, Local Storage, and CSS3 styling, making them the perfect target for aggressive HTML5 development. Targeting the look-and-feel, touch-based input, and varying screen sizes of devices can be tricky, though. This session will introduce you to the essential concepts for targeting HTML5 devices, such as Media Queries and Viewport sizing, and provide you with the tips and tricks you need to successfully develop modern web apps for tablets and mobile devices today.
Accelerated Adoption: HTML5 and CSS3 for ASP.NET DevelopersTodd Anglin
HTML5 and CSS3 have arrived. Are you ready to start adopting these technologies in your web projects? Jump start your understanding of the new rich standards and arm yourself with essential techniques for making the most of HTML5 and CSS3 today. In this half-day workshop, you will learn everything you need to know to effectively start leveraging HTML5 and CSS3 in ASP.NET applications. Learn how HTML5 and CSS3 are removing limits from web design. Discover tools and techniques for adopting HTML5 and CSS3 while still supporting older browsers. Leave with the essential knowledge needed to embrace HTML5 and CSS3 in your next ASP.NET project!
As CSS3 adds support for rich styling in standards-based web applications, style sheet markup can quickly get out of control! Many CSS effects today require repetitive rules to cover the proprietary browser CSS prefixes. LESS for CSS is an open source framework that makes modern CSS more manageable. With support for variables, mix-ins, nested CSS rules, and operations, LESS finally makes complex CSS easy to maintain. In this session, you will discover how LESS can be easily adopted in any ASP.NET project and learn about tools that make it easy to work with LESS in Visual Studio 2010.
Building RESTful Applications with ODataTodd Anglin
Applications today are expected to expose their data and consume data-centric services via REST. In this session we discuss what REST is and have an overview of WCF Data Services and see how we can REST enable your data using the Open Data Protocol (OData). Then you will learn how to leverage existing skills related to Visual Studio, LINQ and data access to customize the behavior, control-flow, security model and experience of your data service. We will then see how to enable data-binding to traditional ASP.NET controls as well as Silverlight and Excel PowerPivot. We’ll then turn to consuming SharePoint and other OData based applications in .NET as well as from a non-Microsoft client. This is a very demo intensive session.
All developers understand the theoretical value of unit testing, but with data driven applications, figuring out how to create tests can be hard. In this session, you will learn how to design and build a data layer that can be tested. We will introduce data layer architecture practices and methodologies that make testing possible, and cover the basics of unit test mocking. You will also be guided through various types of testing, including unit, integration, and functional testing. Leave this session with the basics needed to start creating tests for application data layers, including those powered by LinqToSQL and Entity Framework.
HTML5 and CSS3 Techniques You Can Use TodayTodd Anglin
1. Defines a single language called HTML5 which can be written in HTML syntax and in XML syntax. It defines detailed processing models to foster interoperable implementations and improves markup for documents and APIs for emerging web applications.
2. Todd Anglin discusses HTML5, CSS3, and techniques for using them today including progressive enhancement, feature detection, and libraries that help support older browsers.
3. He recommends trying a new HTML5/CSS3 technique like data attributes, border radius, box shadow, or animations using CSS transitions.
With the recent release of ASP.NET 4.0, there are many new tools in the WebForms developer toolbox that make it possible to build faster, more standards-compliant web applications. In this session, you'll be introduced to all of the new major features in ASP.NET 4.0 and shown how these features can be leveraged to build better WebForms applications. From improved ViewState handling to powerful control over client IDs and caching, this session is your primer for making the upgrade to 4.0.
Support en anglais diffusé lors de l'événement 100% IA organisé dans les locaux parisiens d'Iguane Solutions, le mardi 2 juillet 2024 :
- Présentation de notre plateforme IA plug and play : ses fonctionnalités avancées, telles que son interface utilisateur intuitive, son copilot puissant et des outils de monitoring performants.
- REX client : Cyril Janssens, CTO d’ easybourse, partage son expérience d’utilisation de notre plateforme IA plug & play.
BT & Neo4j: Knowledge Graphs for Critical Enterprise Systems.pptx.pdfNeo4j
Presented at Gartner Data & Analytics, London Maty 2024. BT Group has used the Neo4j Graph Database to enable impressive digital transformation programs over the last 6 years. By re-imagining their operational support systems to adopt self-serve and data lead principles they have substantially reduced the number of applications and complexity of their operations. The result has been a substantial reduction in risk and costs while improving time to value, innovation, and process automation. Join this session to hear their story, the lessons they learned along the way and how their future innovation plans include the exploration of uses of EKG + Generative AI.
Kief Morris rethinks the infrastructure code delivery lifecycle, advocating for a shift towards composable infrastructure systems. We should shift to designing around deployable components rather than code modules, use more useful levels of abstraction, and drive design and deployment from applications rather than bottom-up, monolithic architecture and delivery.
Best Programming Language for Civil EngineersAwais Yaseen
The integration of programming into civil engineering is transforming the industry. We can design complex infrastructure projects and analyse large datasets. Imagine revolutionizing the way we build our cities and infrastructure, all by the power of coding. Programming skills are no longer just a bonus—they’re a game changer in this era.
Technology is revolutionizing civil engineering by integrating advanced tools and techniques. Programming allows for the automation of repetitive tasks, enhancing the accuracy of designs, simulations, and analyses. With the advent of artificial intelligence and machine learning, engineers can now predict structural behaviors under various conditions, optimize material usage, and improve project planning.
Mitigating the Impact of State Management in Cloud Stream Processing SystemsScyllaDB
Stream processing is a crucial component of modern data infrastructure, but constructing an efficient and scalable stream processing system can be challenging. Decoupling compute and storage architecture has emerged as an effective solution to these challenges, but it can introduce high latency issues, especially when dealing with complex continuous queries that necessitate managing extra-large internal states.
In this talk, we focus on addressing the high latency issues associated with S3 storage in stream processing systems that employ a decoupled compute and storage architecture. We delve into the root causes of latency in this context and explore various techniques to minimize the impact of S3 latency on stream processing performance. Our proposed approach is to implement a tiered storage mechanism that leverages a blend of high-performance and low-cost storage tiers to reduce data movement between the compute and storage layers while maintaining efficient processing.
Throughout the talk, we will present experimental results that demonstrate the effectiveness of our approach in mitigating the impact of S3 latency on stream processing. By the end of the talk, attendees will have gained insights into how to optimize their stream processing systems for reduced latency and improved cost-efficiency.
TrustArc Webinar - 2024 Data Privacy Trends: A Mid-Year Check-InTrustArc
Six months into 2024, and it is clear the privacy ecosystem takes no days off!! Regulators continue to implement and enforce new regulations, businesses strive to meet requirements, and technology advances like AI have privacy professionals scratching their heads about managing risk.
What can we learn about the first six months of data privacy trends and events in 2024? How should this inform your privacy program management for the rest of the year?
Join TrustArc, Goodwin, and Snyk privacy experts as they discuss the changes we’ve seen in the first half of 2024 and gain insight into the concrete, actionable steps you can take to up-level your privacy program in the second half of the year.
This webinar will review:
- Key changes to privacy regulations in 2024
- Key themes in privacy and data governance in 2024
- How to maximize your privacy program in the second half of 2024
The DealBook is our annual overview of the Ukrainian tech investment industry. This edition comprehensively covers the full year 2023 and the first deals of 2024.
Paradigm Shifts in User Modeling: A Journey from Historical Foundations to Em...Erasmo Purificato
Slide of the tutorial entitled "Paradigm Shifts in User Modeling: A Journey from Historical Foundations to Emerging Trends" held at UMAP'24: 32nd ACM Conference on User Modeling, Adaptation and Personalization (July 1, 2024 | Cagliari, Italy)
Quantum Communications Q&A with Gemini LLM. These are based on Shannon's Noisy channel Theorem and offers how the classical theory applies to the quantum world.
Coordinate Systems in FME 101 - Webinar SlidesSafe Software
If you’ve ever had to analyze a map or GPS data, chances are you’ve encountered and even worked with coordinate systems. As historical data continually updates through GPS, understanding coordinate systems is increasingly crucial. However, not everyone knows why they exist or how to effectively use them for data-driven insights.
During this webinar, you’ll learn exactly what coordinate systems are and how you can use FME to maintain and transform your data’s coordinate systems in an easy-to-digest way, accurately representing the geographical space that it exists within. During this webinar, you will have the chance to:
- Enhance Your Understanding: Gain a clear overview of what coordinate systems are and their value
- Learn Practical Applications: Why we need datams and projections, plus units between coordinate systems
- Maximize with FME: Understand how FME handles coordinate systems, including a brief summary of the 3 main reprojectors
- Custom Coordinate Systems: Learn how to work with FME and coordinate systems beyond what is natively supported
- Look Ahead: Gain insights into where FME is headed with coordinate systems in the future
Don’t miss the opportunity to improve the value you receive from your coordinate system data, ultimately allowing you to streamline your data analysis and maximize your time. See you there!
Transcript: Details of description part II: Describing images in practice - T...BookNet Canada
This presentation explores the practical application of image description techniques. Familiar guidelines will be demonstrated in practice, and descriptions will be developed “live”! If you have learned a lot about the theory of image description techniques but want to feel more confident putting them into practice, this is the presentation for you. There will be useful, actionable information for everyone, whether you are working with authors, colleagues, alone, or leveraging AI as a collaborator.
Link to presentation recording and slides: https://bnctechforum.ca/sessions/details-of-description-part-ii-describing-images-in-practice/
Presented by BookNet Canada on June 25, 2024, with support from the Department of Canadian Heritage.
Choose our Linux Web Hosting for a seamless and successful online presencerajancomputerfbd
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Advanced Techniques for Cyber Security Analysis and Anomaly DetectionBert Blevins
Cybersecurity is a major concern in today's connected digital world. Threats to organizations are constantly evolving and have the potential to compromise sensitive information, disrupt operations, and lead to significant financial losses. Traditional cybersecurity techniques often fall short against modern attackers. Therefore, advanced techniques for cyber security analysis and anomaly detection are essential for protecting digital assets. This blog explores these cutting-edge methods, providing a comprehensive overview of their application and importance.
Are you interested in dipping your toes in the cloud native observability waters, but as an engineer you are not sure where to get started with tracing problems through your microservices and application landscapes on Kubernetes? Then this is the session for you, where we take you on your first steps in an active open-source project that offers a buffet of languages, challenges, and opportunities for getting started with telemetry data.
The project is called openTelemetry, but before diving into the specifics, we’ll start with de-mystifying key concepts and terms such as observability, telemetry, instrumentation, cardinality, percentile to lay a foundation. After understanding the nuts and bolts of observability and distributed traces, we’ll explore the openTelemetry community; its Special Interest Groups (SIGs), repositories, and how to become not only an end-user, but possibly a contributor.We will wrap up with an overview of the components in this project, such as the Collector, the OpenTelemetry protocol (OTLP), its APIs, and its SDKs.
Attendees will leave with an understanding of key observability concepts, become grounded in distributed tracing terminology, be aware of the components of openTelemetry, and know how to take their first steps to an open-source contribution!
Key Takeaways: Open source, vendor neutral instrumentation is an exciting new reality as the industry standardizes on openTelemetry for observability. OpenTelemetry is on a mission to enable effective observability by making high-quality, portable telemetry ubiquitous. The world of observability and monitoring today has a steep learning curve and in order to achieve ubiquity, the project would benefit from growing our contributor community.
12. “JS had to 'look like Java'
only less so, be Java‟s
dumb kid brother or boy-
hostage sidekick. Plus, I
had to be done in ten
days or something worse
than JS would have
happened”
14. Aug 1996
Microsoft
Mar 1999 Firefox
XHR Safari
Chrome
Mobile
//
Sept 1995
Netscape
Aug 2001
IE6
June 1997
ECMAScript
Feb 2005
Ajax
15. JavaScript won by
default.
If you're the last man left on
earth, it doesn't matter how ugly
you are when the women come to
re-populate the planet.
Scott Koon
25. TIP #1
jQuery is a friend…
…that will stab you in the back.
Prove It
26. CACHE OBJECTS
BAD
$("#myDiv").css("color","red");
$("#myDiv").css("opacity",1);
BETTER
$("#myDiv").css("color","red")
.css("opacity",1);
BEST*
var $myDiv = $("#myDiv");
$myDiv.css("color","red");
$myDiv.css("opacity",1); Prove It
27. NATIVE LOOPS
BAD
$.each(arr, function (i) {i / 2;});
BETTER
arr.forEach(function (i) {i / 2;});
BEST*
var i = 0, len = arr.length;
for (i = 0; i < len; i += 1) {
i / 2;
} Prove It
32. BEST(ISH)
var app = (function(){
var _name = "Todd";
return{
sayHello: function(){
alert(_name);
}
}
}());
app.sayHello();
16:39
33. SUPER PATTERN
Self-Executing Anonymous Functions + Global Imports
+ Prototype
(function(window,$,c){
var _private = "Todd";
function privateClass(){}
function myWidget(){}
myWidget.prototype.doSomething =
function(){}
window.myWidget = myWidget;
}(window,jQuery,console);
Prove It
40. ALSO BETTER
function doSomething(){
var dfd = new $.Deferred();
//Do something async, then...
//dfd.resolve();
return dfd.promise();
}
function doSomethingElse(){
$.when(doSomething()).then(//The next
thing);
}
16:39
42. My Awesome Page
Lorem ipsumy samplish
jibber jabbish text only
meant to serve as a
placeholder, and much like
Pi, should never repeat or
be read much beyond the
first few characters.
Copyright Fo'eva
43. BAD
function doSomething{
...
var $list = $("body").append("<ul>");
for(var i = 0; i < 10; i++){
$list.append("<li>"+ i +"</li>")
}
}
16:39
44. BETTER
function doSomething{
...
var $domChunk = $("<ul>");
for(var i = 0; i < 10; i += 1){
$domChunk.append("<li>"+ i +"</li>");
}
$("body").append($domChunk);
}
16:39
45. DOM SPEED WITH
STRINGS & INNERHTML
function doSomething{
...
var domString = "<ul>";
for(var i = 0; i < 10; i += 1){
domString += "<li>"+ i +"</li>";
}
domString += "</ul>"
$("body")[0].innerHTML = domString;
}
Prove It
46. BEST
<script type="text/x-kendo-template" id="tmp">
<ul>
#for(var i = 0; i < data.length; i += 1){#
<li>#= data[i] #</li>
#}#
</ul>
</script>
function doSomething(){
var myData = [1,..,10];
var template = kendo.template($("#tmp").html());
$("body").append(template(myData));
}
16:39
Prove It
53. Fix IE
<script type="text/javascript">
<!--Console global variable fix for IE-->
if (!this.console) {
window.console = {
log: function() {}
};
}
</script>
16:39
54. Resources for Study
• Books
– JavaScript: The Good Parts (Crockford)
– JavaScript: The Definitive Guide (Flanagan)
– JavaScript Patterns (Stefanov)
– High Performance JavaScript (Zakas)
16:39
5 Tips for Better JavaScript Love it or hate it, JavaScript is playing an increasingly important role in the next generation of web and mobile apps. As code continues to move from the server to the client, JavaScript is being used to do more than simple HTML manipulation. Be prepared for this transition and make sure the JavaScript you write is optimized and ready to perform on desktops and devices! In this session, you will learn ten practical tips that you can use today to write faster, more maintainable, memory friendly JavaScript. You will also learn techniques for testing, debugging, and profiling JavaScript apps.
anglin@telerik.comKendo UI: Everything you need to build sites & mobile apps with HTML and JavaScript (http://www.kendoui.com)
AGENDA:- Why JavaScript? Why?!- Most Common JS Problems- TIPS- Future of JavaScript
JavaScript uses syntax influenced by that of C. JavaScript copies many names and naming conventions from Java, but the two languages are otherwise unrelated and have very different semantics. The key design principles within JavaScript are taken from the Self and Scheme programming languages.http://en.wikipedia.org/wiki/JavaScript
NOTES:HistoryEvolutionThe IE Connection (IE6 memory)Modern JS EnginesBOTTOM LINE: Only Cross Platform Language Solution
Netscape also wanted a lightweight interpreted language that would complement Java by appealing to nonprofessional programmers, like Microsoft's VB
Credit: Brendan Eich via WikipediaSource: http://www.jwz.org/blog/2010/10/every-day-i-learn-something-new-and-stupid/#comment-1021Brendan further said that JavaScript saved the world from VBScripthttp://www.jwz.org/blog/2010/10/every-day-i-learn-something-new-and-stupid/#comment-1049
Java is to JavaScriptASCar is to CarpetNetscape was going to release JavaScript as “LiveScript.” Last minute change produced JavaScript.
HOW DID JAVASCRIPT BECOME UBIQUITOUS?Netscape shipped first in Netscape 2Microsoft support added in IE3 (“JScript”)Other environments adopted JavaScript-like script languages: ActionScript (Flash), PDFs, Qt
Contributing factors:New JS engines (V8)CPU speed (more local processing power)Better debugging toolsBetter understanding of language (closures, patterns, functional programming, JSLint)
Chrome is 10x faster than IE7 (IE6 too old to test)Used crude relative test: http://jsbenchmark.celtickane.com
http://geekmontage.com/firefox-vs-chrome-vs-ie/
http://www.codinghorror.com/blog/2007/07/the-principle-of-least-power.htmlThe Principle of Least Power
Jordan Ilchev, Icenium Team LeadIvan Ivanov, Sr DeveloperBurke Holland, Evangelist, Kendo UIJohn Bristowe, Evangelist, Kendo UITsvetomirTsonev, Sr Developer, Kendo UI
jQuery built for convenience, not for performance.PERF PROOF: http://jsperf.com/id-vs-class-vs-tag-selectors/46Note: This in general is applicable to native JavaScript methods too, like document.getElementById() not limited to jQuery only objects DOM lookups are slow especially if DOM is huge.Instead of this:$('#test').bind('click', function() { /**/ });$('#test').css('border', '1px solid #999');Better use jQuery Method chaining:$('#test').bind('click', function() {/**/ }) .css('border', '1px solid #999');Or cache jQuery object:var $test = $('#test');$test.bind('click', function() {/**/ });$test.css('border', '1px solid #999');(Performance comparison here: http://jsperf.com/jquery-chaining/12) (~+30% here, but it stacks on each additional method call)
PRO TIP CONVENTION: Name jQuery variables with $ (ie $myObject)PERF TEST: http://jsperf.com/caching-jquery-objects-perfhttp://jsbin.com/udizam/2
PERF TEST: http://jsperf.com/for-vs-foreach-vs-each/3- Caching the array length improves perf by about 15% (http://jsperf.com/for-vs-foreach-vs-each/24)- Technically a reverse (count down) for loop is faster (15%) than count-up loop, but much harder to read/use
Global variables pollute the JS app and are slower to use in code. Harder to be a good JS "neighbor" with global variables (collide with other JS code).Better to use local variables, cached variable, or closures
Pattern sometimes referred to as: MODULE EXPORThttp://www.adequatelygood.com/2010/3/JavaScript-Module-Pattern-In-DepthBE CAREFUL WITH CLOSURES: Most common source of memory leaks in modern appshttps://developers.google.com/speed/articles/optimizing-javascriptCircular Reference Memory Leaks: http://blogs.msdn.com/b/ericlippert/archive/2003/09/17/53028.aspx
PERF TEST: http://jsperf.com/prototype-vs-closures/20Suppose you develop a widget. The widget has a number of axillary classes. If you just define them globally they will pollute the global window class, meaning they will be available from everywhere. Instead consider the following definition: (function (window) { function classA () {} function classB () {} function myWidget () {} myWidget.prototype.method1 = function () { } window.myWidget = myWidget; }) (window, undefined); This is the pattern which jQuery follows. Now the only available global definition will be of myWidget. classA and classB remain hidden in the anonymous function. If you look closely in the definition, you will see the that window and undefined are passed to the anonymous function. Passing anonymous guaranties that undefined will be available in the scope of this function and will prevent you from someone who accidentally did something like: undefined = true; before your function. Also, if you use some minifier, it will replace all occurrences of window with some shorter name. Of course you can pass as much params as you wish, thus assuring that these objects exist in the scope of your anonymous function.
- Binding to delegates is less brittle, easier to avoid memory leaks- Pub/Sub is super flexible, less coupling
The scope of an inline event bind is GLOBAL!Inline event handlers can also cause memory leaks in IE: https://developers.google.com/speed/articles/optimizing-javascript
Old jQuery syntax: .delegate
Every time you need to dispose a DOM element, make sure you unbind all of its events, unless you want to come up with a memory leak.Whenever you bind an event handler to an event, you tell the processor to allocate memory for it. The more event handlers you have running at the same time, the more memory you are using. This is why it's important to unbind or detach your event handlers soon as you no longer need them.http://www.learnjquery.org/newsletter/Tutorial-3-jquery-events.html
Event listening PUB/SUB
Reducing the time spent changing the DOM improvesperf. Using templates improves readability/maintainability.Instead of this:var $list = $('#mylist').append('<ul>');for (var i = 0, l = itemlist.length; i < l; i++) { $list.append('<li>' + itemlist[i] + '</li>');}better this:var $list = $('<ul>');for (var i = 0, l = itemlist.length; i < l; i++) { $list.append('<li>' + itemlist[i] + '</li>');}$('#mylist').append($list);(Performance comparison here: http://jsperf.com/jquery-dom-manipulation/3) (up to x5 in this case)
PERF TEST: http://jsperf.com/jquery-dom-manipulation/4When you want to dynamically build html, prefer string concatenation like: var html = ’<p>some paragraph</p>’;html += ‘<p>another paragraph</p>’;$(“#placeHolder”).html(html); over DOM object creation and appending/prepending like: var p1 = document.createElement('p'); p1.innerHTML = "some paragraph"; document.body.appendChild(p1); var p2 = document.createElement('p’); p2.innerHTML = "another paragraph"; document.body.appendChild(p2); assigning directly to the innerHTML proves to be the fastest method for html creation.
Common Examples:RequireJS, CommonJSApplications of any size are painful to manage without a module pattern.
We want to reduce JavaScript files for performance (fewer network requests), BUT…One large JS file is hard to maintain. We'd really prefer more modular files.
JSLint – by Douglas CrockfordCode quality tool for JavaScripthttp://www.jslint.com/
More complete fix by Paul Irish: http://paulirish.com/2009/log-a-lightweight-wrapper-for-consolelog/