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Practical Perl Tools: Scratch the Webapp Itch With
last tIme, we had the pleasure oF exploring the basics of a Web applica- DaviD n. BLank-EdeLman tion framework called CGI::Application (CGI::App). I appreciate this particular pack- age because it hits a certain sweet spot in practical Perl tools: terms of its complexity/learning curve and scratch the webapp itch with power. In this column we’ll finish up our exploration by looking at a few of the more CGI::Application, part 2 powerful extensions to the framework that David N. Blank-Edelman is the director of can really give it some oomph. technology at the Northeastern University College of Computer and Information Sci- ence and the author of the O’Reilly book Quick review Automating System Administration with Perl (the second edition of the Otter book), Let’s do a really quick review of how CGI::App available at purveyors of fine dead trees works, so that we can build on what we’ve learned everywhere. He has spent the past 24+ years as a system/network administrator in large so far. CGI::App is predicated on the notion of “run multi-platform environments, including modes.” When you are first starting out, it is easi- Brandeis University, Cambridge Technology est to map “run mode” to “Web page” in your head. Group, and the MIT Media Laboratory. He was the program chair of the LISA ’05 confer- You write a piece of code (i.e., a subroutine) that ence and one of the LISA ’06 Invited Talks will be responsible for producing the HTML for co-chairs. -
Object Oriented Programming in Java Object Oriented
Object Oriented Programming in Java Introduction Object Oriented Programming in Java Introduction to Computer Science II I Java is Object-Oriented I Not pure object oriented Christopher M. Bourke I Differs from other languages in how it achieves and implements OOP [email protected] functionality I OOP style programming requires practice Objects in Java Objects in Java Java is a class-based OOP language Definition Contrast with proto-type based OOP languages A class is a construct that is used as a blueprint to create instances of I Example: JavaScript itself. I No classes, only instances (of objects) I Constructed from nothing (ex-nihilo) I Objects are concepts; classes are Java’s realization of that concept I Inheritance through cloning of original prototype object I Classes are a definition of all objects of a specific type (instances) I Interface is build-able, mutable at runtime I Classes provide an explicit blueprint of its members and their visibility I Instances of a class must be explicitly created Objects in Java Objects in JavaI Paradigm: Singly-Rooted Hierarchy Object methods 1 //ignore: 2 protected Object clone(); 3 protected void finalize(); I All classes are subclasses of Object 4 Class<? extends Object> getClass(); 5 I Object is a java object, not an OOP object 6 //multithreaded applications: I Makes garbage collection easier 7 public void notify(); 8 public void notifyAll(); I All instances have a type and that type can be determined 9 public void wait(); I Provides a common, universal minimum interface for objects 10 public -
Better PHP Development I
Better PHP Development i Better PHP Development Copyright © 2017 SitePoint Pty. Ltd. Cover Design: Natalia Balska Notice of Rights All rights reserved. No part of this book may be reproduced, stored in a retrieval system or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embodied in critical articles or reviews. Notice of Liability The author and publisher have made every effort to ensure the accuracy of the information herein. However, the information contained in this book is sold without warranty, either express or implied. Neither the authors and SitePoint Pty. Ltd., nor its dealers or distributors will be held liable for any damages to be caused either directly or indirectly by the instructions contained in this book, or by the software or hardware products described herein. Trademark Notice Rather than indicating every occurrence of a trademarked name as such, this book uses the names only in an editorial fashion and to the benefit of the trademark owner with no intention of infringement of the trademark. Published by SitePoint Pty. Ltd. 48 Cambridge Street Collingwood VIC Australia 3066 Web: www.sitepoint.com Email: [email protected] ii Better PHP Development About SitePoint SitePoint specializes in publishing fun, practical, and easy-to-understand content for web professionals. Visit http://www.sitepoint.com/ to access our blogs, books, newsletters, articles, and community forums. You’ll find a stack of information on JavaScript, PHP, design, -
ADOBE INDESIGN CS6 SCRIPTING TUTORIAL 2012 Adobe Systems Incorporated
ADOBE® INDESIGN® CS6 ADOBE INDESIGN CS6 SCRIPTING TUTORIAL 2012 Adobe Systems Incorporated. All rights reserved. Adobe® InDesign® CS6 Scripting Tutorial If this guide is distributed with software that includes an end user agreement, this guide, as well as the software described in it, is furnished under license and may be used or copied only in accordance with the terms of such license. Except as permitted by any such license, no part of this guide may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the prior written permission of Adobe Systems Incorporated. Please note that the content in this guide is protected under copyright law even if it is not distributed with software that includes an end user license agreement. The content of this guide is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by Adobe Systems Incorporated. Adobe Systems Incorporated assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Please remember that existing artwork or images that you may want to include in your project may be protected under copyright law. The unauthorized incorporation of such material into your new work could be a violation of the rights of the copyright owner. Please be sure to obtain any permission required from the copyright owner. Any references to company names in sample templates are for demonstration purposes only and are not intended to refer to any actual organization. -
Concepts in Programming Languages Practicalities
Concepts in Programming Languages Practicalities I Course web page: Alan Mycroft1 www.cl.cam.ac.uk/teaching/1617/ConceptsPL/ with lecture slides, exercise sheet and reading material. These slides play two roles – both “lecture notes" and “presentation material”; not every slide will be lectured in Computer Laboratory detail. University of Cambridge I There are various code examples (particularly for 2016–2017 (Easter Term) JavaScript and Java applets) on the ‘materials’ tab of the course web page. I One exam question. www.cl.cam.ac.uk/teaching/1617/ConceptsPL/ I The syllabus and course has changed somewhat from that of 2015/16. I would be grateful for comments on any remaining ‘rough edges’, and for views on material which is either over- or under-represented. 1Acknowledgement: various slides are based on Marcelo Fiore’s 2013/14 course. Alan Mycroft Concepts in Programming Languages 1 / 237 Alan Mycroft Concepts in Programming Languages 2 / 237 Main books Context: so many programming languages I J. C. Mitchell. Concepts in programming languages. Cambridge University Press, 2003. Peter J. Landin: “The Next 700 Programming Languages”, I T.W. Pratt and M. V.Zelkowitz. Programming Languages: CACM (published in 1966!). Design and implementation (3RD EDITION). Some programming-language ‘family trees’ (too big for slide): Prentice Hall, 1999. http://www.oreilly.com/go/languageposter http://www.levenez.com/lang/ ? M. L. Scott. Programming language pragmatics http://rigaux.org/language-study/diagram.html (4TH EDITION). http://www.rackspace.com/blog/ Elsevier, 2016. infographic-evolution-of-computer-languages/ I R. Harper. Practical Foundations for Programming Plan of this course: pick out interesting programming-language Languages. -
The C Programming Language
The C programming Language The C programming Language By Brian W. Kernighan and Dennis M. Ritchie. Published by Prentice-Hall in 1988 ISBN 0-13-110362-8 (paperback) ISBN 0-13-110370-9 Contents ● Preface ● Preface to the first edition ● Introduction 1. Chapter 1: A Tutorial Introduction 1. Getting Started 2. Variables and Arithmetic Expressions 3. The for statement 4. Symbolic Constants 5. Character Input and Output 1. File Copying 2. Character Counting 3. Line Counting 4. Word Counting 6. Arrays 7. Functions 8. Arguments - Call by Value 9. Character Arrays 10. External Variables and Scope 2. Chapter 2: Types, Operators and Expressions 1. Variable Names 2. Data Types and Sizes 3. Constants 4. Declarations http://freebooks.by.ru/view/CProgrammingLanguage/kandr.html (1 of 5) [5/15/2002 10:12:59 PM] The C programming Language 5. Arithmetic Operators 6. Relational and Logical Operators 7. Type Conversions 8. Increment and Decrement Operators 9. Bitwise Operators 10. Assignment Operators and Expressions 11. Conditional Expressions 12. Precedence and Order of Evaluation 3. Chapter 3: Control Flow 1. Statements and Blocks 2. If-Else 3. Else-If 4. Switch 5. Loops - While and For 6. Loops - Do-While 7. Break and Continue 8. Goto and labels 4. Chapter 4: Functions and Program Structure 1. Basics of Functions 2. Functions Returning Non-integers 3. External Variables 4. Scope Rules 5. Header Files 6. Static Variables 7. Register Variables 8. Block Structure 9. Initialization 10. Recursion 11. The C Preprocessor 1. File Inclusion 2. Macro Substitution 3. Conditional Inclusion 5. Chapter 5: Pointers and Arrays 1. -
210 CHAPTER 7. NAMES and BINDING Chapter 8
210 CHAPTER 7. NAMES AND BINDING Chapter 8 Expressions and Evaluation Overview This chapter introduces the concept of the programming environment and the role of expressions in a program. Programs are executed in an environment which is provided by the operating system or the translator. An editor, linker, file system, and compiler form the environment in which the programmer can enter and run programs. Interac- tive language systems, such as APL, FORTH, Prolog, and Smalltalk among others, are embedded in subsystems which replace the operating system in forming the program- development environment. The top-level control structure for these subsystems is the Read-Evaluate-Write cycle. The order of computation within a program is controlled in one of three basic ways: nesting, sequencing, or signaling other processes through the shared environment or streams which are managed by the operating system. Within a program, an expression is a nest of function calls or operators that returns a value. Binary operators written between their arguments are used in infix syntax. Unary and binary operators written before a single argument or a pair of arguments are used in prefix syntax. In postfix syntax, operators (unary or binary) follow their arguments. Parse trees can be developed from expressions that include infix, prefix and postfix operators. Rules for precedence, associativity, and parenthesization determine which operands belong to which operators. The rules that define order of evaluation for elements of a function call are as follows: • Inside-out: Evaluate every argument before beginning to evaluate the function. 211 212 CHAPTER 8. EXPRESSIONS AND EVALUATION • Outside-in: Start evaluating the function body. -
Session-Ocaml: a Session-Based Library with Polarities and Lenses
Session-ocaml: a Session-based Library with Polarities and Lenses Keigo Imai1, Nobuko Yoshida2, and Shoji Yuen3 1 Gifu University, Japan 2 Imperial College London, UK 3 Nagoya University, Japan Abstract. We propose session-ocaml, a novel library for session-typed concurrent/distributed programming in OCaml. Our technique solely relies on parametric polymorphism, which can encode core session type structures with strong static guarantees. Our key ideas are: () polarised session types, which give an alternative formulation of duality enabling OCaml to automatically infer an appropriate session type in a session with a reasonable notational overhead; and () a parameterised monad with a data structure called ‘slots’ manipulated with lenses, which can statically enforce session linearity and delegations. We show applications of session-ocaml including a travel agency usecase and an SMTP protocol. Introduction Session types [], from their origins in the 휋-calculus [ ], serve as rigorous specifications for coordinating link mobility in the sense that a communication link can move among participants, while ensuring type safety. In session type systems such mobility is called delegation. Once the ownership of a session is delegated (transferred) to another participant, it cannot be used anymore at the sender side. This property is called linearity of sessions and appears indispensable for all session type systems. Linearity of session channels, however, is a major obstacle to adopt session type disciplines in mainstream languages, as it requires special syntax extensions for session communications [], or depends on specific language features, such as type-level functions in Haskell [, , , ], and affine types in Rust [], or even falling back on run-time and dynamic checking [, , , ]. -
Default Argument in Function Declaration
Default Argument In Function Declaration Rory usually desulphurizes semasiologically or outgas subject when lopped Dani circularising colossally and nonchalantly. craunchesDewey masculinized her judgeship. weirdly if ungummed Demetris slims or cased. Teodoro is bituminous: she retes spiritoso and The actual call In declarations are declaring more organized, and declare an optional argument. The following function checks that is that can be combined with whitespace and assign values given general syntax can modify its local variables. Default parameters are declared in declarations in this is notoriously confusing at last two? Which function will you choose to owe two words? In typedefs, the logic required within the method implementation can be messy and hard to maintain. The value returned by a function is general value less the another expression evaluated, because it shut CHANGE. We learned all about how functions can accept different arguments and different styles by which we can pass those arguments in. Default values are specified during function declaration but there is no change in function definition. Input: an array of Promises. You can seize any function of that type call the argument for fidelity first parameter. First, and takes longer to write. Or counter this a typo? Default arguments are overwritten when calling function provides values for them. These examples assume common meanings of prefixes. In default parameter declaration of declaring a function is declared, this behavior of contents open file for. The parameter name is used in the implementation of the function. Optional parameters must conclude after the required parameters. This form style overrides are and two arguments in lots of parentheses. -
August 24, 2002 Jaguar Hits the Stores Stuff to Buy
August 24, 2002 Jaguar hits the stores Stuff to buy Mac OS X 10.2 is officially released. Late ursday Product Showcase has a Saturday Top 20, includ- and Friday, Apple released a few dozen Knowledge- ing all the latest updates for Mac OS X 10.2 com- Base articles on the new operating system that patibility and feature exploitation. We have the full we’ve analyzed for opening day. We’ve much to say story on the Security Update 2002-08-23 for Jaguar about changes in printing support (including some (something we couldn’t have provided Friday morn- information you won’t find elsewhere), as well as ing), as well as QuickTime Streaming Server 4.1.1, Professionals new Classic information and some licensing text Apple Remote Desktop 1.1, FruitMenu 2.5, Script ™ you can probably ignore. For opening day, we start Debugger 3.0.4, TinkerTool 2.3, WebObjects 5.1.4, with what the press is saying, include early bug no- and much more. Number one, though, is the big up- tices, and wrap up with our own early assessment. date that’s not Jaguar-dependent: Adobe Photoshop Late-night issues on Mac OS release dates are a tra- 7.0.1.Revision mania, page 2. dition for MDJ that continues today. The complete early status report, page 1. Coming up next Top five Finder tips Today’s News would have had only a promise of MSN for Macintosh and news that Steve Jobs will We said we’d tell you more about the Mac OS X 10.2 keynote Apple Expo 2002 in Paris next month. -
ADOBE INDESIGN CS4 SERVER SCRIPTING GUIDE © 2008 Adobe Systems Incorporated
ADOBE® INDESIGN® CS4 SERVER ADOBE INDESIGN CS4 SERVER SCRIPTING GUIDE © 2008 Adobe Systems Incorporated. All rights reserved. Adobe® InDesign® CS4 Server Scripting Guide If this guide is distributed with software that includes an end user agreement, this guide, as well as the software described in it, is furnished under license and may be used or copied only in accordance with the terms of such license. Except as permitted by any such license, no part of this guide may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the prior written permission of Adobe Systems Incorporated. Please note that the content in this guide is protected under copyright law even if it is not distributed with software that includes an end user license agreement. The content of this guide is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by Adobe Systems Incorporated. Adobe Systems Incorporated assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Please remember that existing artwork or images that you may want to include in your project may be protected under copyright law. The unauthorized incorporation of such material into your new work could be a violation of the rights of the copyright owner. Please be sure to obtain any permission required from the copyright owner. Any references to company names in sample templates are for demonstration purposes only and are not intended to refer to any actual organization. -
Developing PHP Applications for IBM Database Servers
Front cover Developing PHP Applications for IBM Data Servers Develop and deploy Web solutions using PHP and IBM data servers See PHP with DB2, Informix IDS, and Cloudscape examples Port PHP applications from MySQL to DB2 Whei-Jen Chen Holger Kirstein Daniel Krook Kiran H Nair Piotr Pietrzak ibm.com/redbooks International Technical Support Organization Developing PHP Applications for IBM Data Servers May 2006 SG24-7218-00 Note: Before using this information and the product it supports, read the information in “Notices” on page xi. First Edition (May 2006) This edition applies to DB2 UDB Version 8.2, Informix IDS Version 10, PHP Versions 4 and 5, Apache 1.3, and Apache 2. © Copyright International Business Machines Corporation 2006. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Figures . vii Tables . ix Notices . xi Trademarks . xii Preface . xiii The team that wrote this redbook. xiii Acknowledgement. xv Become a published author . xvi Comments welcome. xvi Chapter 1. Technology overview . 1 1.1 Web application environment . 2 1.1.1 Web application advantages . 2 1.1.2 Web application challenges . 3 1.1.3 The state of the Web application world . 4 1.1.4 Web application components . 4 1.2 IBM data servers . 5 1.2.1 DB2 data server . 5 1.2.2 Informix database server family . 8 1.2.3 Cloudscape . 10 1.3 HTTP Servers . 11 1.3.1 Apache HTTP Server . 12 1.3.2 IBM HTTP Server . 15 1.3.3 Which Web server do I choose? .