Is the Web Good Enough for My App?
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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 -
Histcoroy Pyright for Online Information and Ordering of This and Other Manning Books, Please Visit Topwicws W.Manning.Com
www.allitebooks.com HistCoroy pyright For online information and ordering of this and other Manning books, please visit Topwicws w.manning.com. The publisher offers discounts on this book when ordered in quantity. For more information, please contact Tutorials Special Sales Department Offers & D e al s Manning Publications Co. 20 Baldwin Road Highligh ts PO Box 761 Shelter Island, NY 11964 Email: [email protected] Settings ©2017 by Manning Publications Co. All rights reserved. Support No part of this publication may be reproduced, stored in a retrieval system, or Sign Out transmitted, in any form or by means electronic, mechanical, photocopying, or otherwise, without prior written permission of the publisher. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in the book, and Manning Publications was aware of a trademark claim, the designations have been printed in initial caps or all caps. Recognizing the importance of preserving what has been written, it is Manning’s policy to have the books we publish printed on acidfree paper, and we exert our best efforts to that end. Recognizing also our responsibility to conserve the resources of our planet, Manning books are printed on paper that is at least 15 percent recycled and processed without the use of elemental chlorine. Manning Publications Co. PO Box 761 Shelter Island, NY 11964 www.allitebooks.com Development editor: Cynthia Kane Review editor: Aleksandar Dragosavljević Technical development editor: Stan Bice Project editors: Kevin Sullivan, David Novak Copyeditor: Sharon Wilkey Proofreader: Melody Dolab Technical proofreader: Doug Warren Typesetter and cover design: Marija Tudor ISBN 9781617292576 Printed in the United States of America 1 2 3 4 5 6 7 8 9 10 – EBM – 22 21 20 19 18 17 www.allitebooks.com HistPoray rt 1. -
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. -
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. -
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. -
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. -
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 -
Programming in HTML5 with Javascript and CSS3 Ebook
spine = 1.28” Programming in HTML5 with JavaScript and CSS3 and CSS3 JavaScript in HTML5 with Programming Designed to help enterprise administrators develop real-world, About You job-role-specific skills—this Training Guide focuses on deploying This Training Guide will be most useful and managing core infrastructure services in Windows Server 2012. to IT professionals who have at least Programming Build hands-on expertise through a series of lessons, exercises, three years of experience administering and suggested practices—and help maximize your performance previous versions of Windows Server in midsize to large environments. on the job. About the Author This Microsoft Training Guide: Mitch Tulloch is a widely recognized in HTML5 with • Provides in-depth, hands-on training you take at your own pace expert on Windows administration and has been awarded Microsoft® MVP • Focuses on job-role-specific expertise for deploying and status for his contributions supporting managing Windows Server 2012 core services those who deploy and use Microsoft • Creates a foundation of skills which, along with on-the-job platforms, products, and solutions. He experience, can be measured by Microsoft Certification exams is the author of Introducing Windows JavaScript and such as 70-410 Server 2012 and the upcoming Windows Server 2012 Virtualization Inside Out. Sharpen your skills. Increase your expertise. • Plan a migration to Windows Server 2012 About the Practices CSS3 • Deploy servers and domain controllers For most practices, we recommend using a Hyper-V virtualized • Administer Active Directory® and enable advanced features environment. Some practices will • Ensure DHCP availability and implement DNSSEC require physical servers. -
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 . -
Lab 6: Testing Software Studio Datalab, CS, NTHU Notice
Lab 6: Testing Software Studio DataLab, CS, NTHU Notice • This lab is about software development good practices • Interesting for those who like software development and want to go deeper • Good to optimize your development time Outline • Introduction to Testing • Simple testing in JS • Testing with Karma • Configuring Karma • Karma demo: Simple test • Karma demo: Weather Mood • Karma demo: Timer App • Conclusions Outline • Introduction to Testing • Simple testing in JS • Testing with Karma • Configuring Karma • Karma demo: Simple test • Karma demo: Weather Mood • Karma demo: Timer App • Conclusions What is testing? Is it important? Actually, we are always doing some kind of testing.. And expecting some result.. And expecting some result.. Sometimes we just open our app and start clicking to see results Why test like a machine? We can write programs to automatically test our application! Most common type of test: Unit test Unit test • “Unit testing is a method by which individual units of source code are tested to determine if they are fit for use. A unit is the smallest testable part of an application.” - Wikipedia Good unit test properties • It should be automated and repeatable • It should be easy to implement • Once it’s written, it should remain for future use • Anyone should be able to run it • It should run at the push of a button • It should run quickly The art of Unit Testing, Roy Osherove Many frameworks for unit tests in several languages Common procedure • Assertion: A statement that a predicate is expected to always be true at that point in the code. -Wikipedia Common procedure • We write our application and want it to do something, so we write a test to see if it’s behaving as we expect Common procedure • Pseudocode: But how to do that in JS? Outline • Introduction to Testing • Simple testing in JS • Testing with Karma • Configuring Karma • Karma demo: Simple test • Karma demo: Weather Mood • Karma demo: Timer App • Conclusions Simple testing: expect library and jsbin Test passed: Test didn’t pass: This is ok for testing some simple functions. -
Open Source Used in SD-AVC 2.2.0
Open Source Used In SD-AVC 2.2.0 Cisco Systems, Inc. www.cisco.com Cisco has more than 200 offices worldwide. Addresses, phone numbers, and fax numbers are listed on the Cisco website at www.cisco.com/go/offices. Text Part Number: 78EE117C99-189242242 Open Source Used In SD-AVC 2.2.0 1 This document contains licenses and notices for open source software used in this product. With respect to the free/open source software listed in this document, if you have any questions or wish to receive a copy of any source code to which you may be entitled under the applicable free/open source license(s) (such as the GNU Lesser/General Public License), please contact us at [email protected]. In your requests please include the following reference number 78EE117C99-189242242 Contents 1.1 @angular/angular 5.1.0 1.1.1 Available under license 1.2 @angular/material 5.2.3 1.2.1 Available under license 1.3 angular 1.5.9 1.3.1 Available under license 1.4 angular animate 1.5.9 1.5 angular cookies 1.5.9 1.6 angular local storage 0.5.2 1.7 angular touch 1.5.9 1.8 angular ui router 0.3.2 1.9 angular ui-grid 4.0.4 1.10 angular-ui-bootstrap 2.3.2 1.10.1 Available under license 1.11 angular2-moment 1.7.0 1.11.1 Available under license 1.12 angularJs 1.5.9 1.13 bootbox.js 4.4.0 1.14 Bootstrap 3.3.7 1.14.1 Available under license 1.15 Bootstrap 4 4.0.0 1.15.1 Available under license 1.16 chart.js 2.7.2 1.16.1 Available under license 1.17 commons-io 2.5 1.17.1 Available under license Open Source Used In SD-AVC 2.2.0 2 1.18 commons-text 1.4 1.18.1 -
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.