Lex & Yacc <p class="center">Please enable javascript to best experience this site.</p> This document explains how to construct a compiler using lex and yacc. Lex and yacc are tools used to generate lexical analyzers and parsers. The Overview describes the basic building blocks of a compiler and explains the interaction between lex and yacc. Permission to reproduce portions of this document is given provided the web site listed below is referenced. Tom Niemann Portland, Oregon epaperpress.com
Tutorials # Tutorials ## General Tutorials - [Data Science Essentials]( introduction to data visualization and exploration concepts - [CS109]( Collection of data science lectures with programming assignments and projects - [Introduction to Data Science]( comprehensive overview of modern data science - [Data Analyst Nanodegree]( General Tutorials Python Tutorials R Tutorials
Compilers and Compiler Generators Special Symbols | Contents | Diagrams | Symbol Font Edition | GIF Font edition | Downloadable files | Source Code | Courseware | Change List an introduction with C++ © P.D. Terry, Rhodes University, 1996 NEW (1 February 2005) The complete text of the book has been distilled into one PDF file (1MB) pdfvers.pdf, courtesy of Irwin Oppenheim of the Netherlands. NEW (23 November 2004) A complete revision of this book, using C# and Java and the versions of Coco/R for those languages, was published by Pearson Education (Addison Wesley) on 5th November 2004 under the title "Compiling with C# and Java" (ISBN 032126360X). A feature of this book is that it demonstrates the use of Coco/R to implement compilers for the JVM and CLR platforms. You can view the contents of the freely available "Resource Kit". You might also like to view the Pearson Education catalogue entry for this book. Order it from www.amazon.co.uk (February 2003) Local site reorganization: A previous ftp server has been decommissioned.
The Bash Hackers Wiki Software | OpenDaylight OpenDaylight “Helium” -- The Rise of Open SDN OpenDaylight is an open platform for network programmability to enable SDN and NFV for networks at any size and scale. The community’s second release “Helium” comes with a new user interface and a much simpler and customizable installation process thanks to the use of the Apache Karaf container. For those looking to manage their networks using OpenDaylight, there is deeper integration with OpenStack, including significant improvements in the Open vSwitch Database Integration project, and a technology preview of advanced OpenStack features such as Security Groups, Distributed Virtual Router and Load Balancing-as-a-Service. OpenDaylight software is a combination of components including a fully pluggable controller, interfaces, protocol plug-ins and applications. Download Helium For more information on the first OpenDaylight release “Hydrogen,” click here.
Lex and YACC primer/HOWTO PowerDNS BV (bert hubert <bert@powerdns.com>) v0.8 $Date: 2004/09/20 07:14:23 $ This document tries to help you get started using Lex and YACC 1. Welcome, gentle reader. If you have been programming for any length of time in a Unix environment, you will have encountered the mystical programs Lex & YACC, or as they are known to GNU/Linux users worldwide, Flex & Bison, where Flex is a Lex implementation by Vern Paxson and Bison the GNU version of YACC. These programs are massively useful, but as with your C compiler, their manpage does not explain the language they understand, nor how to use them. 1.1 What this document is NOT There are several great books which deal with Lex & YACC. The documentation that comes with Flex and BISON is also excellent, but no tutorial. I am by no means a YACC/Lex expert. In no way expect the HOWTO to show proper YACC and Lex style. 1.2 Downloading stuff Please note that you can download all the examples shown, which are in machine readable form. 1.3 License 2.
Paul E. McKenney's Journal CodeGuru: STL.NET: Combining Generics and Templates It has been jokingly suggested that when a C++ programmer is asked how to accomplish a given task, he or she will provide a list of a dozen or more potential solutions, and then proceed to outline the problem with each in excruciating detail. Visual C++ 2005, through the C++/CLI language bindings, introduces the concept of generics, allowing C++ programmers to further enhance their reputation as the programmers with the largest arsenal of language constructs. Brent Rector covered the differences between .NET generics and C++ templates in an excellent article in June 2004. The difference between templates and generics leads to the question that every C++ programmer who wants to target .NET will end up asking: Which technology should I pick? Leverage C++ Skills for .NET Development In the past, Visual C++ has offered some technologies that have enabled STL collections to work with other technologies. Bridging Templates and Generics Using STL.NET C++ Programmers' Ticket to the .NET Realm
Help Manual - Software Changing Desktop Environments Change Repository Location Creating and Extracting compressed files File Encryption Getting Software Installing Software Linux Equivalents of Windows Programs Lite Software - Install Software Lite Software - Remove Software Lite Sources Lite Tweaks - Bootup Fix - Clear Memory - Default Web Browser - Hibernate, Suspend Lite Updates Notify PPA - Adding PPA - Removing Software Updates Country Location Uninstalling Software Updates Wine - Run Windows programs Getting Software Getting software on Linux is easier than on Windows. The vast majority of programs that you may want/need to install are all centrally located in what are called software repositories (repos). Rather than searching the web, downloading programs from various sites (some of which may not be reliable), running the installer, rebooting, etc., available software is all centrally located and available for installation in seconds. Installing Software 1. 2. type in your search query. 3. 4. 5.
OpenH264 BNF and EBNF: What are they and how do they work? By: Lars Marius Garshol Contents Introduction What is this? This is a short article that attempts to explain what BNF is, based on message <wkwwagbizn.fsf@ifi.uio.no> posted to comp.text.sgml on 16.Jun.98. It has been filled out substantially since then and has grown quite large. What is BNF? Backus-Naur notation (more commonly known as BNF or Backus-Naur Form) is a formal mathematical way to describe a language, which was developed by John Backus (and possibly Peter Naur as well) to describe the syntax of the Algol 60 programming language. (Legend has it that it was primarily developed by John Backus (based on earlier work by the mathematician Emil Post), but adopted and slightly improved by Peter Naur for Algol 60, which made it well-known. It is used to formally define the grammar of a language, so that there is no disagreement or ambiguity as to what is allowed and what is not. Programs that do this are commonly called "compiler compilers". How it works The principles A real example ? OK.
Augmenting APIs with Nginx and Lua. | 3scale Tech Blog Nginx as an API proxy At 3scale we are big fans nginx. Few weeks ago we launched an open-source API proxy which is basically nginx with a set of custom lua scripts that allow for simple configuration of your API proxy. How easy? There are many reasons why you should use nginx as your API proxy. Another big win of nginx is the lua support. The rationale is simple. The Victim: Sentiment API (could be any API) To show how powerful nginx and lua are we will use a simple REST API called Sentiment and augment the heck out of it without touching a single line of the API source code (which by the way is available at github). The Sentiment API is a very basic API that returns the emotional value of a word or a sentence. curl " will return a JSON with the emotional value of the word fantastic So, we have our victim. The What-If part: extending the Sentiment API There are many ways that you can extend the Sentiment API (or your own API). The Basics
Boost C++ Libraries Customize your internet with an open source search engine A long time ago, the internet was small enough to be indexed by a few people who gathered the names and locations of all websites and listed them each by topic on a page or in a printed book. As the World Wide Web network grew, the "web rings" convention developed, in which sites with a similar theme or topic or sensibility banded together to form a circular path to each member. A visitor to any site in the ring could click a button to proceed to the next or previous site in the ring to discover new sites relevant to their interest. Then for a while, it seemed the internet outgrew itself. Why choose an open source alternative? Search engines like Google and DuckDuckGo are demonstrably effective. But maybe you prefer not to use Google or DuckDuckGo because of privacy concerns or because you're looking to contribute to an effort to make the internet more independent. Install YaCy To install and try YaCy, first ensure you have Java installed. On Linux, start YaCy running in the background: