DOCSLIB.ORG

Exploring ES6 Upgrade to the Next Version of Javascript

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Exploring ES6 Upgrade to the Next Version of Javascript Exploring ES6 Upgrade to the next version of JavaScript Axel Rauschmayer This book is for sale at http://leanpub.com/exploring-es6 This version was published on 2015-10-03 This is a Leanpub book. Leanpub empowers authors and publishers with the Lean Publishing process. Lean Publishing is the act of publishing an in-progress ebook using lightweight tools and many iterations to get reader feedback, pivot until you have the right book and build traction once you do. ©2015 Axel Rauschmayer (cover by Fran Caye) This book is dedicated to the impossible girl, who has taught me so much about love and life. Contents What you need to know about this book ............................ i Audience: JavaScript programmers .............................. i Why should I read this book? ................................. i How to read this book ..................................... i Glossary and conventions ................................... ii Documenting classes .................................. ii Capitalization ...................................... ii Demo code on GitHub ..................................... iii Sidebars ............................................ iii Footnotes ............................................ iv Preface ............................................... v Acknowledgements ........................................ vi I Background .................................... 1 1. About ECMAScript 6 (ES6) .................................. 2 1.1 TC39 (Ecma Technical Committee 39) ......................... 2 1.2 How ECMAScript 6 was designed ........................... 2 1.2.1 The design process after ES6 ........................... 3 1.3 JavaScript versus ECMAScript ............................. 3 1.4 Upgrading to ES6 .................................... 3 1.5 Goals for ES6 ....................................... 4 1.5.1 Goal: Be a better language ............................ 4 1.5.2 Goal: Improve interoperation .......................... 5 1.5.3 Goal: Versioning ................................. 5 1.6 An overview of ES6 features .............................. 5 1.7 A brief history of ECMAScript ............................. 6 1.7.1 The early years: ECMAScript 1–3 ........................ 6 1.7.2 ECMAScript 4 (abandoned in July 2008) .................... 6 1.7.3 ECMAScript Harmony .............................. 7 2. FAQ: ECMAScript 6 ...................................... 9 CONTENTS 2.1 Isn’t ECMAScript 6 now called ECMAScript 2015? .................. 9 2.2 How much of ES6 is supported natively by current engines? ............. 9 2.3 How do I migrate my ECMAScript 5 code to ECMAScript 6? ............. 9 2.4 Does it still make sense to learn ECMAScript 5? .................... 9 2.5 Is ES6 bloated? ...................................... 10 2.6 Isn’t the ES6 specification very big? .......................... 10 2.7 Does ES6 have array comprehensions? ......................... 10 2.8 Is ES6 statically typed? ................................. 11 2.9 Should I avoid classes? ................................. 11 2.10 Does ES6 have traits or mixins? ............................. 11 2.11 Why are there “fat” arrow functions (=>) in ES6, but no “thin” arrow functions (->)? 12 2.12 Where can I find more ES6 resources? ......................... 12 3. One JavaScript: avoiding versioning in ECMAScript 6 .................. 13 3.1 Versioning ........................................ 13 3.1.1 Evolution without versioning .......................... 14 3.2 Strict mode and ECMAScript 6 ............................. 15 3.2.1 Supporting sloppy (non-strict) mode ...................... 16 3.2.2 let declarations in sloppy mode ........................ 16 3.2.3 Block-level function declarations in sloppy mode . 16 3.2.4 Other keywords ................................. 17 3.2.5 Implicit strict mode ............................... 17 3.2.6 Things that can’t be fixed ............................ 17 3.3 Conclusion ........................................ 17 3.4 Further reading ..................................... 18 4. First steps with ECMAScript 6 ................................ 19 4.1 Trying out ECMAScript 6 ................................ 19 4.1.1 The Babel REPL ................................. 19 4.1.2 babel-node .................................... 20 4.2 From var to let/const ................................. 21 4.3 From IIFEs to blocks ................................... 22 4.4 From concatenating strings to template literals .................... 23 4.4.1 String interpolation ............................... 23 4.4.2 Multi-line strings ................................. 23 4.5 From function expressions to arrow functions ..................... 24 4.6 Handling multiple return values ............................ 26 4.6.1 Multiple return values via arrays ........................ 26 4.6.2 Multiple return values via objects ........................ 26 4.7 From for to forEach() to for-of .......................... 27 4.8 Handling parameter default values ........................... 28 4.9 Handling named parameters .............................. 28 4.9.1 Making the parameter optional ......................... 29 CONTENTS 4.10 From arguments to rest parameters .......................... 29 4.11 From apply() to the spread operator (...) ...................... 30 4.11.1 Math.max() ................................... 30 4.11.2 Array.prototype.push() ........................... 31 4.12 From concat() to the spread operator (...) ..................... 31 4.13 From constructors to classes ............................... 32 4.13.1 Base classes .................................... 32 4.13.2 Derived classes .................................. 33 4.14 From custom error constructors to subclasses of Error . 34 4.15 From function expressions in object literals to method definitions . 34 4.16 From objects to Maps .................................. 35 4.17 From CommonJS modules to ES6 modules ....................... 36 4.17.1 Multiple exports ................................. 36 4.17.2 Single exports .................................. 38 4.18 What to do next ..................................... 38 5. Deploying ECMAScript 6 .................................. 39 5.1 Using ECMAScript 6 today ............................... 39 5.1.1 Using ECMAScript 6 natively .......................... 39 5.2 Transpilation tools .................................... 40 5.2.1 Choosing a transpiler .............................. 41 5.2.2 Choosing a package manager .......................... 42 5.2.3 Choosing a module system ........................... 42 5.3 Other useful ES6 tools and libraries ........................... 42 5.4 ES6 REPLs ........................................ 43 5.5 Are there ES6 features that can’t be transpiled to ES5? . 43 5.5.1 Better syntax for existing features ........................ 44 5.5.2 New functionality in the standard library ................... 45 5.5.3 Completely new features ............................ 45 5.6 Example transpilation setups .............................. 47 5.7 Example setup: Client-side ES6 via webpack and Babel . 47 5.7.1 webpack features ................................. 47 5.7.2 Installing webpack ................................ 48 5.7.3 Using webpack and ES6 in a project ....................... 48 5.8 Example setup: Dynamically transpiled ES6 on Node.js via Babel . 51 5.8.1 Running normal Node.js code via Babel .................... 51 5.8.2 Running Jasmine unit tests via Babel ...................... 52 5.9 Example setup: Statically transpiled ES6 on Node.js via Babel and gulp . 54 5.9.1 Installation .................................... 54 5.9.2 Source maps ................................... 54 5.9.3 The gulp file ................................... 55 5.9.4 Transpilation ................................... 56 5.9.5 Running the transpiled code ........................... 57 CONTENTS II Data ........................................... 59 6. New number and Math features ............................... 60 6.1 Overview ......................................... 60 6.2 New integer literals ................................... 60 6.2.1 Use case for octal literals: Unix-style file permissions . 61 6.2.2 parseInt() and the new integer literals .................... 62 6.3 New static Number properties .............................. 64 6.3.1 Previously global functions ........................... 64 6.3.2 Number.EPSILON ................................ 65 6.3.3 Number.isInteger(number) ......................... 66 6.3.4 Safe Integers ................................... 66 6.4 Math ........................................... 69 6.4.1 Various numerical functionality ......................... 69 6.4.2 Using 0 instead of 1 with exponentiation and logarithm . 71 6.4.3 Logarithms to base 2 and 10 ........................... 72 6.4.4 Support for compiling to JavaScript ....................... 73 6.4.5 Bitwise operations ................................ 73 6.4.6 Trigonometric methods ............................. 74 6.5 FAQ: numbers ...................................... 74 6.5.1 How can I use integers beyond JavaScript’s 53 bit range? . 74 7. New string features ...................................... 76 7.1 Overview ......................................... 76 7.2 Unicode code point escapes ............................... 76 7.3 String interpolation, multi-line string literals and raw string literals . 77 7.4 Iterating over strings ................................... 77 7.4.1 Iteration honors Unicode code points ...................... 78 7.4.2
Load more

Recommended publications
  • Emscripten: an LLVM to Javascript Compiler
    Emscripten: An LLVM to JavaScript Compiler Alon Zakai Mozilla What? Why? Compiling to JavaScript ● The web is everywhere – PCs to iPads – No plugins, no installation required – Built on standards ● The web runs JavaScript Existing Compilers to JavaScript ● Google Web Toolkit: Java (Gmail, etc.) ● CoffeeScript ● Pyjamas: Python ● SCM2JS: Scheme ● JSIL: .NET bytecode ● (and many more) ● But C and C++ are missing! Emscripten ● Enables compiling C and C++ into JavaScript ● Written in JavaScript ● Open source http://emscripten.org https://github.com/kripken/emscripten Demos! ● Bullet ● SQLite ● Python, Ruby, Lua ● Real-world code – Large, complex codebases ● Manual ports exist – Typically partial and not up to date The Big Picture C or C++ LLVM Bitcode JavaScript Low Level Virtual Machine (LLVM) ● A compiler project (cf. GCC) ● Intermediate Representation: LLVM bitcode – Very well documented – Great tools ● Much easier to compile LLVM bitcode than compile C or C++ directly! How? Code Comparison #include <stdio.h> int main() { printf(“hello, world!\n”); return 0; } Code Comparison @.str = private unnamed_addr constant [15 x i8] c"hello, world!\0A\00", align 1 define i32 @main() { entry: %retval = alloca i32, align 4 call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([15 x i8]* @.str, i32 0, i32 0)) store i32 0, i32* %retval ret i32 %retval } Code Comparison define i32 @main() { function _main() { entry: %retval = alloca i32, var _retval; align 4 call i32 (i8*, ...)* _printf (..); @printf (..) store i32 0, i32* _retval = 0; %retval ret
    [Show full text]
  • Javascript and the DOM
    Javascript and the DOM 1 Introduzione alla programmazione web – Marco Ronchetti 2020 – Università di Trento The web architecture with smart browser The web programmer also writes Programs which run on the browser. Which language? Javascript! HTTP Get + params File System Smart browser Server httpd Cgi-bin Internet Query SQL Client process DB Data Evolution 3: execute code also on client! (How ?) Javascript and the DOM 1- Adding dynamic behaviour to HTML 3 Introduzione alla programmazione web – Marco Ronchetti 2020 – Università di Trento Example 1: onmouseover, onmouseout <!DOCTYPE html> <html> <head> <title>Dynamic behaviour</title> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> </head> <body> <div onmouseover="this.style.color = 'red'" onmouseout="this.style.color = 'green'"> I can change my colour!</div> </body> </html> JAVASCRIPT The dynamic behaviour is on the client side! (The file can be loaded locally) <body> <div Example 2: onmouseover, onmouseout onmouseover="this.style.background='orange'; this.style.color = 'blue';" onmouseout=" this.innerText='and my text and position too!'; this.style.position='absolute'; this.style.left='100px’; this.style.top='150px'; this.style.borderStyle='ridge'; this.style.borderColor='blue'; this.style.fontSize='24pt';"> I can change my colour... </div> </body > JavaScript is event-based UiEvents: These event objects iherits the properties of the UiEvent: • The FocusEvent • The InputEvent • The KeyboardEvent • The MouseEvent • The TouchEvent • The WheelEvent See https://www.w3schools.com/jsref/obj_uievent.asp Test and Gym JAVASCRIPT HTML HEAD HTML BODY CSS https://www.jdoodle.com/html-css-javascript-online-editor/ Javascript and the DOM 2- Introduction to the language 8 Introduzione alla programmazione web – Marco Ronchetti 2020 – Università di Trento JavaScript History • JavaScript was born as Mocha, then “LiveScript” at the beginning of the 94’s.
    [Show full text]
  • Learning React Functional Web Development with React and Redux
    Learning React Functional Web Development with React and Redux Alex Banks and Eve Porcello Beijing Boston Farnham Sebastopol Tokyo Learning React by Alex Banks and Eve Porcello Copyright © 2017 Alex Banks and Eve Porcello. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://oreilly.com/safari). For more information, contact our corporate/insti‐ tutional sales department: 800-998-9938 or [email protected]. Editor: Allyson MacDonald Indexer: WordCo Indexing Services Production Editor: Melanie Yarbrough Interior Designer: David Futato Copyeditor: Colleen Toporek Cover Designer: Karen Montgomery Proofreader: Rachel Head Illustrator: Rebecca Demarest May 2017: First Edition Revision History for the First Edition 2017-04-26: First Release See http://oreilly.com/catalog/errata.csp?isbn=9781491954621 for release details. The O’Reilly logo is a registered trademark of O’Reilly Media, Inc. Learning React, the cover image, and related trade dress are trademarks of O’Reilly Media, Inc. While the publisher and the authors have used good faith efforts to ensure that the information and instructions contained in this work are accurate, the publisher and the authors disclaim all responsibility for errors or omissions, including without limitation responsibility for damages resulting from the use of or reliance on this work. Use of the information and instructions contained in this work is at your own risk. If any code samples or other technology this work contains or describes is subject to open source licenses or the intellectual property rights of others, it is your responsibility to ensure that your use thereof complies with such licenses and/or rights.
    [Show full text]
  • Introducing 2D Game Engine Development with Javascript
    CHAPTER 1 Introducing 2D Game Engine Development with JavaScript Video games are complex, interactive, multimedia software systems. These systems must, in real time, process player input, simulate the interactions of semi-autonomous objects, and generate high-fidelity graphics and audio outputs, all while trying to engage the players. Attempts at building video games can quickly be overwhelmed by the need to be well versed in software development as well as in how to create appealing player experiences. The first challenge can be alleviated with a software library, or game engine, that contains a coherent collection of utilities and objects designed specifically for developing video games. The player engagement goal is typically achieved through careful gameplay design and fine-tuning throughout the video game development process. This book is about the design and development of a game engine; it will focus on implementing and hiding the mundane operations and supporting complex simulations. Through the projects in this book, you will build a practical game engine for developing video games that are accessible across the Internet. A game engine relieves the game developers from simple routine tasks such as decoding specific key presses on the keyboard, designing complex algorithms for common operations such as mimicking shadows in a 2D world, and understanding nuances in implementations such as enforcing accuracy tolerance of a physics simulation. Commercial and well-established game engines such as Unity, Unreal Engine, and Panda3D present their systems through a graphical user interface (GUI). Not only does the friendly GUI simplify some of the tedious processes of game design such as creating and placing objects in a level, but more importantly, it ensures that these game engines are accessible to creative designers with diverse backgrounds who may find software development specifics distracting.
    [Show full text]
  • The Elinks Manual the Elinks Manual Table of Contents Preface
    The ELinks Manual The ELinks Manual Table of Contents Preface.......................................................................................................................................................ix 1. Getting ELinks up and running...........................................................................................................1 1.1. Building and Installing ELinks...................................................................................................1 1.2. Requirements..............................................................................................................................1 1.3. Recommended Libraries and Programs......................................................................................1 1.4. Further reading............................................................................................................................2 1.5. Tips to obtain a very small static elinks binary...........................................................................2 1.6. ECMAScript support?!...............................................................................................................4 1.6.1. Ok, so how to get the ECMAScript support working?...................................................4 1.6.2. The ECMAScript support is buggy! Shall I blame Mozilla people?..............................6 1.6.3. Now, I would still like NJS or a new JS engine from scratch. .....................................6 1.7. Feature configuration file (features.conf).............................................................................7
    [Show full text]
  • Teaching Introductory Programming with Javascript in Higher Education
    Proceedings of the 9th International Conference on Applied Informatics Eger, Hungary, January 29–February 1, 2014. Vol. 1. pp. 339–350 doi: 10.14794/ICAI.9.2014.1.339 Teaching introductory programming with JavaScript in higher education Győző Horváth, László Menyhárt Department of Media & Educational Informatics, Eötvös Loránd University, Budapest, Hungary [email protected] [email protected] Abstract As the Internet penetration rate continuously increases and web browsers show a substantial development, the web becomes a more general and ubiq- uitous application runtime platform, where the programming language on the client side exclusively is JavaScript. This is the reason why recently JavaScript is more often considered as the lingua franca of the web, or, from a different point of view, the universal virtual machine of the web. In ad- dition, the JavaScript programming language appears in many other areas of informatics due to the wider usage of the HTML-based technology, and the embedded nature of the language. Consequently, in these days it is quite difficult to program without getting in touch with JavaScript in some way. In this article we are looking for answers to how the JavaScript language is suitable for being an introductory language in the programming related subjects of the higher education. First we revisit the different technologies that lead to and ensure the popularity of JavaScript. Following, current approaches using JavaScript as an introductory language are overviewed and analyzed. Next, a curriculum of an introductory programming course at the Eötvös Loránd University is presented, and a detailed investigation is given about how the JavaScript language would fit in the expectations and requirements of this programming course.
    [Show full text]
  • Introduction to Javascript
    Introduction to JavaScript Lecture 6 CGS 3066 Fall 2016 October 6, 2016 JavaScript I Dynamic programming language. Program the behavior of web pages. I Client-side scripts to interact with the user. I Communicates asynchronously and alters document content. I Used with Node.js in server side scripting, game development, mobile applications, etc. I Has thousands of libraries that can be used to carry out various tasks. JavaScript is NOT Java I Names can be deceiving. I Java is a full-fledged object-oriented programming language. I Java is popular for developing large-scale distributed enterprise applications and web applications. I JavaScript is a browser-based scripting language developed by Netscape and implemented in all major browsers. I JavaScript is executed by the browsers on the client side. JavaScript and other languages JavaScript borrows the elements from a variety of languages. I Object orientation from Java. I Syntax from C. I Semantics from Self and Scheme. Whats a script? I A program written for a special runtime environment. I Interpreted (as opposed to compiled). I Used to automate tasks. I Operates at very high levels of abstraction. Whats JavaScript? I Developed at Netscape to perform client side validation. I Adopted by Microsoft in IE 3.0 (1996). I Standardized in 1996. Current standard is ECMAScript 6 (2016). I Specifications for ECMAScript 2016 are out. I CommonJS used for development outside the browser. JavaScript uses I JavaScript has an insanely large API and library. I It is possible to do almost anything with JavaScript. I Write small scripts/apps for your webpage.
    [Show full text]
  • Webassembly a New World of Native Exploits on the Web Agenda
    WebAssembly A New World Of Native Exploits On The Web Agenda • Introduction • The WebAssembly Platform • Emscripten • Possible Exploit Scenarios • Conclusion Wasm: What is it good for? ● Archive.org web emulators ● Image/processing ● Video Games ● 3D Modeling ● Cryptography Libraries ● Desktop Application Ports Wasm: Crazy Incoming ● Browsix, jslinux ● Runtime.js (Node), Nebulet ● Cervus ● eWASM Java Applet Joke Slide ● Sandboxed ● Virtual Machine, runs its own instruction set ● Runs in your browser ● Write once, run anywhere ● In the future, will be embedded in other targets What Is WebAssembly? ● A relatively small set of low-level instructions ○ Instructions are executed by browsers ● Native code can be compiled into WebAssembly ○ Allows web developers to take their native C/C++ code to the browser ■ Or Rust, or Go, or anything else that can compile to Wasm ○ Improved Performance Over JavaScript ● Already widely supported in the latest versions of all major browsers ○ Not limited to running in browsers, Wasm could be anywhere Wasm: A Stack Machine Text Format Example Linear Memory Model Subtitle Function Pointers Wasm in the Browser ● Wasm doesn’t have access to memory, DOM, etc. ● Wasm functions can be exported to be callable from JS ● JS functions can be imported into Wasm ● Wasm’s linear memory is a JS resizable ArrayBuffer ● Memory can be shared across instances of Wasm ● Tables are accessible via JS, or can be shared to other instances of Wasm Demo: Wasm in a nutshell Emscripten ● Emscripten is an SDK that compiles C/C++ into .wasm binaries ● LLVM/Clang derivative ● Includes built-in C libraries, etc. ● Also produces JS and HTML code to allow easy integration into a site.
    [Show full text]
  • Focus Type Applies To
    Focus Type Applies To All Power Tools All All Power Tools Team Foundation Server All Templates Team Foundation Server All Integration Provider Team Foundation Server All Power Tools Team Foundation Server All Power Tools Team Foundation Server All Integration Provider Team Foundation Server Architecture Power Tools Visual Studio Architecture Power Tools Visual Studio Architecture Templates Visual Studio Architecture Integration Provider Oracle Architecture Templates Expression Builds Power Tools Team Foundation Server Builds Integration Provider Visual Studio Builds Power Tools Team Foundation Server Builds Templates Team Foundation Server Builds Power Tools Team Foundation Server Builds Power Tools Team Foundation Server Builds Power Tools Team Foundation Server Coding Power Tools Visual Studio Coding Integration Provider Visual Studio Coding Azure Integration Visual Studio Coding Integration Provider Dynamics CRM Coding Documentation Visual Studio Coding Integration Provider Visual Studio Coding Templates Visual Studio Coding Documentation Visual Studio Coding Templates SharePoint Coding Templates SharePoint Coding Integration Provider Visual Studio Coding Integration Provider Visual Studio Coding Templates SharePoint Coding Power Tools Visual Studio Coding Power Tools Visual Studio Coding Templates SharePoint Coding Templates Visual Studio Coding Templates Visual Studio Coding Templates Visual Studio Coding Power Tools Visual Studio Coding Integration Provider SharePoint Coding Templates Visual Studio Coding Templates SharePoint Coding
    [Show full text]
  • Javascript to Webassembly Cross Compiler Studienarbeit
    JavaScript to WebAssembly Cross Compiler Studienarbeit Abteilung Informatik Hochschule für Technik Rapperswil Herbstsemester 2018 Autoren: Matteo Kamm, Mike Marti Betreuer: Prof. Dr. Luc Bläser Projektpartner: Institute for Networked Solutions Inhaltsverzeichnis 1 Abstract 3 2 Einführung 4 2.1 Ausgangslage . .4 2.2 Übersicht . .5 2.2.1 Beispiel . .6 2.3 Struktur des Berichts . .7 3 Language Set 8 3.1 Grundsatz des Subsets . .8 3.2 Typen . .9 3.3 Unterstützte Sprachkonstrukte . .9 4 Cross Compilation 11 4.1 Typinferenz . 11 4.2 Template-Based Code Generation . 11 4.2.1 Unäre Operatoren . 12 4.2.2 Binäre Operationen . 12 4.2.3 Expression Statements . 13 4.2.4 Arrayzugriffe . 13 4.3 Control Flow . 15 4.3.1 Block Statement . 15 4.3.2 Branching . 15 4.3.3 While-Loop . 17 4.3.4 For-Loop . 19 4.4 Variablen-Allokation . 19 4.5 Funktionsaufrufe . 20 5 Laufzeitunterstützung 21 5.1 Prüfen der Funktionssignatur . 21 5.2 Kopieren der Array Parameter . 21 5.3 Konvertieren des zurückgegebenen Resultats . 21 5.4 Out Parameter . 21 5.5 Speicher . 22 5.5.1 Import . 22 5.5.2 Export . 22 6 Auswertung 23 6.1 Testfälle . 23 6.2 Setup . 23 6.3 Resultate . 24 6.3.1 Speedup . 24 6.3.2 Varianz . 26 6.3.3 Vergleich zu C++ . 27 6.3.4 Webpack Development Modus . 28 6.4 Fazit . 28 7 Schlussfolgerung 29 7.1 Ausblick . 29 1 Anhang 30 A Erläuterung Language Set 30 A.1 Typen . 30 A.2 Numerische Erweiterung . 30 A.3 Abweichungen der binären Operatoren zu JavaScript .
    [Show full text]
  • Hi, My Name Is Chad Ausen, Technical Director at IMVU, and Today We're Go
    Hi, my name is Chad Aus0n, technical director at IMVU, and today we’re going to talk about a library we’ve developed for connec0ng C++ and JavaScript with Emscripten. 1 2 IMVU is an online social plaorm where you can sign up, dress up an avatar, and meet people from all around the world. We offer other ac0vi0es such as games as well. 3 The content in our world is created by our customers, and to our knowledge, we have the largest catalog of 3D virtual goods on the Internet. 4 We currently offer a downloadable applicaon for Windows and Mac. Windows and Mac are great plaorms, but in recent years, other plaorms have grown to prominence. We’d like our content available everywhere: mobile plaorms, desktop, server-side renderers, and even the web browser! For almost all plaorms, it’s obvious that C++ is a great choice for the core engine. However, our big ques0on was, what about the web browser? In 2011, I benchmarked an upcoming tool called Emscripten and was quite impressed. 5 Emscripten works very well in prac0ce, so the implicaon is that C++ is the portable, high-performance language EVERYWHERE. 6 Here is our Emscripten applicaon running in Firefox. UI is HTML and CSS. Chat over WebSockets, graphics in WebGL. 7 asm.js is the subset of JavaScript that can be stacally compiled into machine code. More informaon at h`p://asmjs.org/ 8 The C heap is stored in an ArrayBuffer in JavaScript. One con0guous blob of memory. This memory is indexed by eight different typed array views that alias each other.
    [Show full text]
  • Technological Advancement in Object Oriented Programming Paradigm for Software Development
    International Journal of Applied Engineering Research ISSN 0973-4562 Volume 14, Number 8 (2019) pp. 1835-1841 © Research India Publications. http://www.ripublication.com Technological Advancement in Object Oriented Programming Paradigm for Software Development Achi Ifeanyi Isaiah1, Agwu Chukwuemeka Odi2, Alo Uzoma Rita3, Anikwe Chioma Verginia4, Okemiri Henry Anaya5 1Department of Maths/Comp Sci/Stats/Info., Faculty of science, Alex Ekwueme University, Ndufu-Alike 2Department of Computer Science, Ebonyi State University-Abakaliki. 3Alex Ekwueme University, Ndufu-Alike, 4Department of Maths/Comp Sci/Stats/Info., Faculty of science, Alex Ekwueme University, Ndufu-Alike 5Department of Maths/Comp Sci/Stats/Info., Faculty of science, Alex Ekwueme University, Ndufu-Alike Abstract and personalization problems. Take for instance, a lot of sophisticated apps are being produced and release in the Object oriented programming paradigm in software market today through the application of OOP. Almost desktop development is one of the most popular methods in the apps are being converted to mobile apps through Java, C++, information technology industry and academia as well as in PHP & MySQL, R, Python etc platform which form the many other forms of engineering design. Software testimony of OOP in the software industries. Software development is a field of engineering that came into existence developer has been revolving using procedural language for owing to the various problems that developers of software the past decade before the advent of OOP. The relationships faced while developing software projects. This paper analyzes between them is that procedural languages focus on the some of the most important technological innovations in algorithm but OOP focuses on the object model itself, object oriented software engineering in recent times.
    [Show full text]