| can't open file for writing: Practical Common Lisp Peter Seibel, 2006-11-01 * Treats LISP as a language for commercial applications, not a language for academic AI concerns. This could be considered to be a secondary text for the Lisp course that most schools teach . This would appeal to students who sat through a LISP course in college without quite getting it – so a nostalgia approach, as in wow-lisp can be practical... * Discusses the Lisp programming model and environment. Contains an introduction to the language and gives a thorough overview of all of Common Lisp’s main features. * Designed for experienced programmers no matter what languages they may be coming from and written for a modern audience—programmers who are familiar with languages like Java, Python, and Perl. * Includes several examples of working code that actually does something useful like Web programming and database access. |
| can't open file for writing: Programming in C++ J. B. Dixit, 2005 |
| can't open file for writing: Programming Perl Tom Christiansen, brian d foy, Larry Wall, Jon Orwant, 2012-02-17 Adopted as the undisputed Perl bible soon after the first edition appeared in 1991, Programming Perl is still the go-to guide for this highly practical language. Perl began life as a super-fueled text processing utility, but quickly evolved into a general purpose programming language that’s helped hundreds of thousands of programmers, system administrators, and enthusiasts, like you, get your job done. In this much-anticipated update to the Camel, three renowned Perl authors cover the language up to its current version, Perl 5.14, with a preview of features in the upcoming 5.16. In a world where Unicode is increasingly essential for text processing, Perl offers the best and least painful support of any major language, smoothly integrating Unicode everywhere—including in Perl’s most popular feature: regular expressions. Important features covered by this update include: New keywords and syntax I/O layers and encodings New backslash escapes Unicode 6.0 Unicode grapheme clusters and properties Named captures in regexes Recursive and grammatical patterns Expanded coverage of CPAN Current best practices |
| can't open file for writing: Beginning Perl James Lee, 2010-06-14 This is a book for those of us who believed that we didn’t need to learn Perl, and now we know it is more ubiquitous than ever. Perl is extremely flexible and powerful, and it isn’t afraid of Web 2.0 or the cloud. Originally touted as the duct tape of the Internet, Perl has since evolved into a multipurpose, multiplatform language present absolutely everywhere: heavy-duty web applications, the cloud, systems administration, natural language processing, and financial engineering. Beginning Perl, Third Edition provides valuable insight into Perl’s role regarding all of these tasks and more. Commencing with a comprehensive overview of language basics, you’ll learn all about important concepts such as Perl’s data types and control flow constructs. This material sets the stage for a discussion of more complex topics, such as writing custom functions, using regular expressions, and file input and output. Next, the book moves on to the advanced topics of object-oriented programming, modules, web programming, and database administration with Perl’s powerful database interface module, DBI. The examples and code provided offer you all of the information you need to start writing your own powerful scripts to solve the problems listed above, and many more. Whether you are a complete novice or an experienced programmer, Beginning Perl, Third Edition offers an ideal guide to learning Perl. |
| can't open file for writing: Linux System Programming Techniques Jack-Benny Persson, 2021-05-07 Find solutions to all your problems related to Linux system programming using practical recipes for developing your own system programs Key FeaturesDevelop a deeper understanding of how Linux system programming worksGain hands-on experience of working with different Linux projects with the help of practical examplesLearn how to develop your own programs for LinuxBook Description Linux is the world's most popular open source operating system (OS). Linux System Programming Techniques will enable you to extend the Linux OS with your own system programs and communicate with other programs on the system. The book begins by exploring the Linux filesystem, its basic commands, built-in manual pages, the GNU compiler collection (GCC), and Linux system calls. You'll then discover how to handle errors in your programs and will learn to catch errors and print relevant information about them. The book takes you through multiple recipes on how to read and write files on the system, using both streams and file descriptors. As you advance, you'll delve into forking, creating zombie processes, and daemons, along with recipes on how to handle daemons using systemd. After this, you'll find out how to create shared libraries and start exploring different types of interprocess communication (IPC). In the later chapters, recipes on how to write programs using POSIX threads and how to debug your programs using the GNU debugger (GDB) and Valgrind will also be covered. By the end of this Linux book, you will be able to develop your own system programs for Linux, including daemons, tools, clients, and filters. What you will learnDiscover how to write programs for the Linux system using a wide variety of system callsDelve into the working of POSIX functionsUnderstand and use key concepts such as signals, pipes, IPC, and process managementFind out how to integrate programs with a Linux systemExplore advanced topics such as filesystem operations, creating shared libraries, and debugging your programsGain an overall understanding of how to debug your programs using ValgrindWho this book is for This book is for anyone who wants to develop system programs for Linux and gain a deeper understanding of the Linux system. The book is beneficial for anyone who is facing issues related to a particular part of Linux system programming and is looking for specific recipes or solutions. |
| can't open file for writing: Beginning PHP5 Dave W. Mercer, Allan Kent, Steven D. Nowicki, David Mercer, Dan Squier, Wankyu Choi, 2005-02-11 What is this book about? Beginning PHP5 is a complete tutorial in PHP5'slanguage features and functionality, beginning with the basics andbuilding up to the design and construction of complex data-drivenWeb sites. Fully functioning applications are developed through thecourse of the book. Other features of the book include installationguide and troubleshooting tips, introduction to relationaldatabases, practical working examples and applications, and adetailed language reference. Here are the new topics in this edition: OOP PEAR GTK MSI CLI SQLite Error handling with try/catch |
| can't open file for writing: Learning the Vi and Vim Editors Arnold Robbins, Elbert Hannah, Linda Lamb, 2008-07-15 There's nothing that hard-core Unix and Linux users are more fanatical about than their text editor. Editors are the subject of adoration and worship, or of scorn and ridicule, depending upon whether the topic of discussion is your editor or someone else's. vi has been the standard editor for close to 30 years. Popular on Unix and Linux, it has a growing following on Windows systems, too. Most experienced system administrators cite vi as their tool of choice. And since 1986, this book has been the guide for vi. However, Unix systems are not what they were 30 years ago, and neither is this book. While retaining all the valuable features of previous editions, the 7th edition of Learning the vi and vim Editors has been expanded to include detailed information on vim, the leading vi clone. vim is the default version of vi on most Linux systems and on Mac OS X, and is available for many other operating systems too. With this guide, you learn text editing basics and advanced tools for both editors, such as multi-window editing, how to write both interactive macros and scripts to extend the editor, and power tools for programmers -- all in the easy-to-follow style that has made this book a classic. Learning the vi and vim Editors includes: A complete introduction to text editing with vi: How to move around vi in a hurry Beyond the basics, such as using buffers vi's global search and replacement Advanced editing, including customizing vi and executing Unix commands How to make full use of vim: Extended text objects and more powerful regular expressions Multi-window editing and powerful vim scripts How to make full use of the GUI version of vim, called gvim vim's enhancements for programmers, such as syntax highlighting, folding and extended tags Coverage of three other popular vi clones -- nvi, elvis, and vile -- is also included. You'll find several valuable appendixes, including an alphabetical quick reference to both vi and ex mode commands for regular vi and for vim, plus an updated appendix on vi and the Internet. Learning either vi or vim is required knowledge if you use Linux or Unix, and in either case, reading this book is essential. After reading this book, the choice of editor will be obvious for you too. |
| can't open file for writing: Fundamentals of Computer Programming and Information Technology J. B. Dixit, 2005-05 |
| can't open file for writing: Text Processing with Ruby Rob Miller, 2015-09-22 Text is everywhere. Web pages, databases, the contents of files--for almost any programming task you perform, you need to process text. Cut even the most complex text-based tasks down to size and learn how to master regular expressions, scrape information from Web pages, develop reusable utilities to process text in pipelines, and more. Most information in the world is in text format, and programmers often find themselves needing to make sense of the data hiding within. It might be to convert it from one format to another, or to find out information about the text as a whole, or to extract information fromit. But how do you do this efficiently, avoiding labor-intensive, manual work? Text Processing with Ruby takes a practical approach. You'll learn how to get text into your Ruby programs from the file system and from user input. You'll process delimited files such as CSVs, and write utilities that interact with other programs in text-processing pipelines. Decipher character encoding mysteries, and avoid the pain of jumbled characters and malformed output. You'll learn to use regular expressions to match, extract, and replace patterns in text. You'll write a parser and learn how to process Web pages to pull out information from even the messiest of HTML. Before long you'll be able to tackle even the most enormous and entangled text with ease, scything through gigabytes of data and effortlessly extracting the bits that matter. What You Need: This book requires a passing familiarity with the Ruby programming language, and assumes that you already have Ruby installed on your computer. |
| can't open file for writing: Using C-Kermit Frank da Cruz, Christine Gianone, 1996-11-20 Written by the co-managers of the Kermit Project, this is a revised and updated tutorial on data communications, with new material on today's high-speed modems and how to make the best use of them |
| can't open file for writing: iPad at Work For Dummies Galen Gruman, 2015-02-12 Get the most out of using your iPad at work iPad at Work For Dummies provides essential and in-depth coverage for a variety of productivity-related tasks made possible on the iPad, from basics such as setting up and starting out with an iPad to tips on the best practices for enterprise-level word processing, spreadsheet creation, presenting, task management, project management, graphic design, and communication. Beyond that, it also includes down-to-earth examples of how to use an iPad at work, including synchronization, data backup, and communicating with Windows networks. Written by an experienced and well-known iPad user, writer, podcaster, and lecturer who has taught many other professionals how to get the most from their Apple devices in the workplace, iPad at Work For Dummies goes beyond simple coverage of iWork to show you step-by-step the iPad's capabilities to quickly, professionally, and effectively create and interact with typical office documents and systems. Covers the best software and practices for productively integrating the iPad into a work environment Shows you how the iPad goes beyond use as an at-home device to make work easier Includes examples that bring the information and instructions to life If you're considering integrating the use of an iPad at work, or have recently begun and want to grasp the full spectrum of its capabilities in the workplace, iPad at Work For Dummies has you covered. |
| can't open file for writing: PHP Cookbook David Sklar, Adam Trachtenberg, 2003 A collection of problems, solutions, and practical examples for PHP programmers. The book contains a unique and extensive collection of best practices for everyday PHP programming dilemmas. For every problem addressed in the book, there's a worked-out solution or recipe -- a short, focused piece of code you can insert directly into your application. However, this book offers more than cut-and-paste code. You also get explanations of how and why the code works, so you can learn to adapt the problem-solving techniques to similar situations. The recipes in the PHP Cookbook range from simple tasks, such as sending a database query and fetching URLs, to entire programs that demonstrate complex tasks, such as printing HTML tables and generating bar charts. This book contains an impressive collection of useful code for PHP programmers, from novices to advanced practitioners. Instead of poking around mailing lists, online documentation, and other sources, you can rely on the PHP Cookbook to provide quick solutions to common problems, so you can spend your time on those out-of-the-ordinary problems specific to your application. |
| can't open file for writing: Head First Go Jay McGavren, 2019-04-04 What will you learn from this book? Go makes it easy to build software that’s simple, reliable, and efficient. Andthis book makes it easy for programmers like you to get started. Googledesigned Go for high-performance networking and multiprocessing, but—like Python and JavaScript—the language is easy to read and use. With thispractical hands-on guide, you’ll learn how to write Go code using clearexamples that demonstrate the language in action. Best of all, you’ll understandthe conventions and techniques that employers want entry-level Godevelopers to know. Why does this book look so different? Based on the latest research in cognitive science and learning theory, HeadFirst Go uses a visually rich format to engage your mind rather than a textheavyapproach that puts you to sleep. Why waste your time struggling withnew concepts? This multisensory learning experience is designed for theway your brain really works. |
| can't open file for writing: Director 8 Demystified Phil Gross, Jason Roberts, 2000 This best-selling book on Director has been updated to cover Director's many new features. The CD-ROM includes useful tutorials and scripts to get readers up and running with the software. This edition covers features new to this latest release, including new design and authoring tools and one-click publishing of Shockwave content. |
| can't open file for writing: Beginning C, 5th Edition Ivor Horton, 2013-04-01 Beginning C, 5th Edition teaches you how to program using the widely-available C language. You'll begin from first-principles and progress through step-by-step examples to become a competent, C-language programmer. All you need are this book and any of the widely available free or commercial C or C++ compilers, and you'll soon be writing real C programs. C is a foundational language that every programmer ought to know. C is the basis for C# used in Microsoft .NET programming. It is the basis for Objective-C used in programming for the iPhone, the iPad, and other Apple devices. It is the basis for the C++ that is widely used in a great many contexts, including the GNU Project. It underlies the Linux operating system and many of its utilities. Learning C provides a strong foundation for any programming care, and will even help you better understand more modern languages such as Java. Beginning C is written by renowned author Ivor Horton. The book increases your programming expertise by guiding you through the development of fully working C applications that use what you've learned in a practical context. You’ll also be able to strike out on your own by trying the exercises included at the end of each chapter. At the end of the book you'll be confident in your skills with all facets of the widely-used and powerful C language. The only beginning-level book to cover the latest ANSI standard in C Revised to cover C99 features newly-supported by language compilers Emphasizes writing code after the first chapter Includes substantial examples relevant to intermediate users |
| can't open file for writing: Learn Microsoft Excel 2002 VBA Programming with XML and ASP Julitta Korol, 2003 Designed to provide non-developers with a hands-on guide to both Excel VBA and XML, this book gives users a wide range of VBA coverage including how to write subroutines and functions from scratch, manipulate files and folders with VBA statements, manage date with arrays and collections, and much more. Includes CD. |
| can't open file for writing: Pro JavaScript Performance Tom Barker, 2012-12-30 Performance is a hugely important area of web development. If your site runs slowly, users are going to leave, and the problem only grows as your site gets more popular. Pro JavaScript Performance gives you the tools you need to keep your sites smooth and responsive no matter how many users you have. Best practices are changing or becoming redefined continually because of changes and optimizations at the interpreter level, and differences in system configuration, and network speeds. This is exacerbated by the quickened release schedule that most browsers have adopted. Just as important as following best practices is the ability to measure your own performance, so that you can adjust as times change, and so that you can note the subtle nuances in your own code and define your own best practices by your own observations. This book gives you the tools to observe and track the performance of your web applications over time from multiple perspectives, so that you are always aware of, and can fix, all aspects of your performance. |
| can't open file for writing: Dr. Dobb's Journal , 2008 |
| can't open file for writing: An Introduction to Object-Oriented Programming in C++ Graham M. Seed, 2012-12-06 Why Another Book on c++ and why Programming and Graphics? Anyone who has browsed through the 'Computing' section of a bookshop (assuming it has one) will not need much convincing that there are a lot of C++ books out there. So why add yet another to the shelf! This book attempts to introduce you to the C++ language via computer graphics because the object-oriented programming features of C++ naturally lend themselves to graphics. Thus, this book is based around a central theme: computer graphics and the development of 'real' object-oriented tools for graphical modelling. This approach is adopted (as opposed to learning by small, unrelated, often hypothetical, examples) because I didn't want to introduce C++ as a collection oflanguage features. While introducing the syntax and features of C++, it is just as important to demonstrate simultaneously the reason for such features and when to apply them - in otherwords,language and design are given equal priority. Also, a key objective in writing this book is to present you with a comprehensive introductory text on programming in the C++ language. |
| can't open file for writing: Mastering Microsoft Visual Basic 2008 Evangelos Petroutsos, 2008-03-11 This expert guide covers what you need to know to program with Visual Basic 2008, employ the latest Visual Studio 2008 tools, and operate efficiently within the .NET Framework. In an easy-to-follow style, the book moves from in-depth explanations to practical instruction to real-world examples. Explore basic coding in VB 2008 and learn to build interfaces without coding by using Visual Studio 2008's drag-and-drop visual tools. You?ll get up to speed on LINQ and handle key tasks such as programming TreeView controls, and more. |
| can't open file for writing: Raspberry Pi Cookbook Simon Monk, 2022-12-08 If you've started to work with Raspberry Pi, you know that Raspberry Pi's capabilities are continually expanding. The fourth edition of this popular cookbook provides more than 200 hands-on recipes (complete with code) that show you how to run this tiny low-cost computer with Linux, program it with Python, hook it up to sensors and motors, and use it with the internet of things (IoT). This new edition includes new chapters on the Raspberry Pi Pico and machine learning with the Raspberry Pi. These easy-to-use recipes will show you, step-by-step, how to: Set up your Raspberry Pi and connect to a network Work with its Linux-based operating system Program your Raspberry Pi with Python Give your Pi eyes with computer vision Recognize objects from video and sounds using machine learning Control hardware through the GPIO connector Use your Raspberry Pi to run different types of motors Work with switches, keypads, and other digital inputs Use sensors to measure temperature, light, and distance Connect to IoT devices in various ways and automate your home Use the Raspberry Pi Pico microcontroller board with your Raspberry Pi |
| can't open file for writing: PROGRAMMING BASICS PRABHU TL, Learning to code is a new skill that is popular these days. It is so much in demand that even high schools have added programming in their curriculum. Programming and coding are often used interchangeably but both are different and you can read about them in this book. With every chore being digitized & becoming smart and automotive with the AI technology, learning to code has become the need of an era. Everything that you can possibly think of can be done using an app or a website from ordering a cab, or food or shopping online to watching movies or even taking a course & gaming skills. With applications being digitized the demand also increases for developers and programmers and hence learning a programming language would be beneficial. This book teaches how to learn the programming language of your choice and the correct way to begin your programming journey. As we know, to communicate with a person, we need a specific language, similarly to communicate with computers, programmers also need a language is called Programming language. Before learning the programming language, let's understand what is language? What is Language? Language is a mode of communication that is used to share ideas, opinions with each other. For example, if we want to teach someone, we need a language that is understandable by both communicators. What is a Programming Language? A programming language is a computer language that is used by programmers (developers) to communicate with computers. It is a set of instructions written in any specific language ( C, C++, Java, Python) to perform a specific task. A programming language is mainly used to develop desktop applications, websites, and mobile applications. Types of programming language 1. Low-level programming language Low-level language is machine-dependent (0s and 1s) programming language. The processor runs low- level programs directly without the need of a compiler or interpreter, so the programs written in low-level language can be run very fast. How to find Nth Highest Salary in SQL Low-level language is further divided into two parts - i. Machine Language Machine language is a type of low-level programming language. It is also called as machine code or object code. Machine language is easier to read because it is normally displayed in binary or hexadecimal form (base 16) form. It does not require a translator to convert the programs because computers directly understand the machine language programs. The advantage of machine language is that it helps the programmer to execute the programs faster than the high-level programming language. ii. Assembly Language Assembly language (ASM) is also a type of low-level programming language that is designed for specific processors. It represents the set of instructions in a symbolic and human-understandable form. It uses an assembler to convert the assembly language to machine language. The advantage of assembly language is that it requires less memory and less execution time to execute a program. 2. High-level programming language High-level programming language (HLL) is designed for developing user-friendly software programs and websites. This programming language requires a compiler or interpreter to translate the program into machine language (execute the program). The main advantage of a high-level language is that it is easy to read, write, and maintain. High-level programming language includes Python, Java, JavaScript, PHP, C#, C++, Objective C, Cobol, Perl, Pascal, LISP, FORTRAN, and Swift programming language. A high-level language is further divided into three parts - How to Learn to Code Before we begin reading further let me remind you that you have chosen a path that demands patience and motivation to never give up in spite of the challenge on the way. Read through and follow the steps below to become a programmer. Focus on Learning Programming Basics It is always suggested to make your fundamentals strong so as to be a pro coder. Learn the basics thoroughly and try your hands on the code by making your own problems and solving them. Stress on the following topics to begin learning as they are common in almost all the languages. Data Types Variables Functions Array or Lists If statements Conditional loops Classes and objects Exception handling Trees, maps, and more. Build your First Project Building your personal project is the best way to analyze and learn what you have learned. Building a project of your choice would give you practical learning experience of the language in much detail as you would come across the implementation of the concepts that you have learned earlier and also learn how to deploy the project to be used by you and all others. Moreover, as you build your projects add it to your profile or your GitHub account, this would help you in the future when you look for a job in development. |
| can't open file for writing: Practical Vim Drew Neil, 2015-10-28 Vim is a fast and efficient text editor that will make you a faster and more efficient developer. It's available on almost every OS, and if you master the techniques in this book, you'll never need another text editor. In more than 120 Vim tips, you'll quickly learn the editor's core functionality and tackle your trickiest editing and writing tasks. This beloved bestseller has been revised and updated to Vim 7.4 and includes three brand-new tips and five fully revised tips. A highly configurable, cross-platform text editor, Vim is a serious tool for programmers, web developers, and sysadmins who want to raise their game. No other text editor comes close to Vim for speed and efficiency; it runs on almost every system imaginable and supports most coding and markup languages. Learn how to edit text the Vim way: complete a series of repetitive changes with The Dot Formula using one keystroke to strike the target, followed by one keystroke to execute the change. Automate complex tasks by recording your keystrokes as a macro. Discover the very magic switch that makes Vim's regular expression syntax more like Perl's. Build complex patterns by iterating on your search history. Search inside multiple files, then run Vim's substitute command on the result set for a project-wide search and replace. All without installing a single plugin! Three new tips explain how to run multiple ex commands as a batch, autocomplete sequences of words, and operate on a complete search match. Practical Vim, Second Edition will show you new ways to work with Vim 7.4 more efficiently, whether you're a beginner or an intermediate Vim user. All this, without having to touch the mouse. What You Need: Vim version 7.4 |
| can't open file for writing: Navigating C++ and Object-oriented Design Paul Anderson, Gail Anderson, 1998 This comprehensive, practical tutorial helps programmers understand both C++ and object-oriented design methodologies, so they can write C++ that truly meets its potential. This text incorporates the newer language features, including templates and exception handling, and explains how to apply C++ language constructs, design guidelines, and object-oriented methodology to solve real world problems. |
| can't open file for writing: CGI Programming 101 Jacqueline D. Hamilton, 2004 This concise presentation of the key elements of Perl CGI is perfect for programmers who are under the gun. The book includes the basics of where to write scripts; how to upload them and set file permissions; how to run them, and how to decode form data and save it to a file. |
| can't open file for writing: Beginning C Ivor Horton, 2007-12-22 C is the programming language of choice when speed and reliability are required. It is used for many low-level tasks, such as device drivers and operating-system programming. For example, much of Windows and Linux is based on C programming. The updated 4th edition of Beginning C builds on the strengths of its predecessors to offer an essential guide for anyone who wants to learn C or desires a ‘brush-up’ in this compact, fundamental language. This classic from author, lecturer and respected academic Ivor Horton is the essential guide for anyone looking to learn the C language from the ground up. |
| can't open file for writing: Python How-To Yong Cui, 2023-07-11 Have you ever asked yourself, “How do I do that in Python?” If so, you’ll love this practical collection of the most important Python techniques. Python How-To includes over 60 detailed answers to questions like: How do I join and split strings? How do I access dictionary keys, values, and items? How do I set and use the return value in function calls? How do I process JSON data? How do I create lazy attributes to improve performance? How do I change variables in a different namespace? …and much more Python How-To walks you through the most important coding techniques in Python. Whether you’re doing data science, building web applications, or writing admin scripts, you’ll find answers to your “how-to” questions in this book. Inside you’ll find important insights into both Python basics and deep-dive topics to help you skill-up at any stage of your Python career. Author Yong Cui’s clear and practical writing is instantly accessible and makes it easy to take advantage of Python’s versatile tools and libraries. Perfect to be read both from cover to cover, and whenever you need help troubleshooting your code. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Python How-To uses a simple but powerful method to lock in 63 core Python skills. You’ll start with a question, like “How do I find items in a sequence?” Next, you’ll see an example showing the basic solution in crystal-clear code. You’ll then explore interesting variations, such as finding substrings or identifying custom classes. Finally, you’ll practice with a challenge exercise before moving on to the next How-To. About the Book This practical guide covers all the language features you’ll need to get up and running with Python. As you go, you’ll explore best practices for writing great Python code. Practical suggestions and engaging graphics make each important technique come to life. Author Yong Cui’s careful cross-referencing reveals how you can reuse features and concepts in different contexts. What’s Inside How to: Join and split strings Access dictionary keys, values, and items Set and use the return value in function calls Process JSON data Create lazy attributes to improve performance Change variables in a different namespace …and much more. About the Reader For beginning to intermediate Python programmers. About the Author Dr. Yong Cui has been working with Python in bioscience for data analysis, machine learning, and tool development for over 15 years. Table of Contents 1 Developing a pragmatic learning strategy PART 1 - USING BUILT-IN DATA MODELS 2 Processing and formatting strings 3 Using built-in data containers 4 Dealing with sequence data 5 Iterables and iterations PART 2 - DEFINING FUNCTIONS 6 Defining user-friendly functions 7 Using functions beyond the basics PART 3 - DEFINING CLASSES 8 Defining user-friendly classes 9 Using classes beyond the basics PART 4 - MANIPULATING OBJECTS AND FILES 10 Fundamentals of objects 11 Dealing with files PART 5 - SAFEGUARDING THE CODEBASE 12 Logging and exception handling 13 Debugging and testing PART 6 - BUILDING A WEB APP 14 Completing a real project |
| can't open file for writing: Programming Bjarne Stroustrup, 2014 An introduction to programming by the inventor of C++, Programming prepares students for programming in the real world. This book assumes that they aim eventually to write non-trivial programs, whether for work in software development or in some other technical field. It explains fundamental concepts and techniques in greater depth than traditional introductions. This approach gives students a solid foundation for writing useful, correct, maintainable, and efficient code. This book is an introduction to programming in general, including object-oriented programming and generic programming. It is also a solid introduction to the C++ programming language, one of the most widely used languages for real-world software. It presents modern C++ programming techniques from the start, introducing the C++ standard library to simplify programming tasks. |
| can't open file for writing: Advanced Mac OS X Programming Mark Dalrymple, 2011-08-18 While there are several books on programming for Mac OS X, Advanced Mac OS X Programming: The Big Nerd Ranch Guide is the only one that contains explanations of how to leverage the powerful underlying technologies. This book gets down to the real nitty-gritty. The third edition is updated for Mac OS X 10.5 and 10.6 and covers new technologies like DTrace, Instruments, Grand Central Dispatch, blocks, and NSOperation. |
| can't open file for writing: Beginning Lua Programming Kurt Jung, Aaron Brown, 2011-08-15 This book is for students and professionals who are intrigued by the prospect of learning and using a powerful language that provides a rich infrastructure for creating programs. No programming knowledge is necessary to benefit from this book except for the section on Lua bindings, which requires some familiarity with the C programming language. A certain comfort level with command-line operations, text editing, and directory structures is assumed. You need surprisingly little in the way of computer resources to learn and use Lua. This book focuses on Windows and Unix-like (including Linux) systems, but any operating system that supports a command shell should be suitable. You'll need a text editor to prepare and save Lua scripts. If you choose to extend Lua with libraries written in a programming language like C, you'll need a suitable software development kit. Many of these kits are freely available on the Internet but, unlike Lua, they can consume prodigious amounts of disk space and memory. |
| can't open file for writing: PHP Cookbook Adam Trachtenberg, David Sklar, 2006-08-25 When it comes to creating dynamic web sites, the open source PHP language is red-hot property: used on more than 20 million web sites today, PHP is now more popular than Microsoft's ASP.NET technology. With our Cookbook's unique format, you can learn how to build dynamic web applications that work on any web browser. This revised new edition makes it easy to find specific solutions for programming challenges. PHP Cookbook has a wealth of solutions for problems that you'll face regularly. With topics that range from beginner questions to advanced web programming techniques, this guide contains practical examples -- or recipes -- for anyone who uses this scripting language to generate dynamic web content. Updated for PHP 5, this book provides solutions that explain how to use the new language features in detail, including the vastly improved object-oriented capabilities and the new PDO data access extension. New sections on classes and objects are included, along with new material on processing XML, building web services with PHP, and working with SOAP/REST architectures. With each recipe, the authors include a discussion that explains the logic and concepts underlying the solution. |
| can't open file for writing: Microsoft Excel 2019 Programming by Example with VBA, XML, and ASP Julitta Korol, 2019-05-13 Updated for Excel 2019 and based on the bestselling editions from previous versions, Microsoft Excel 2019 Programming by Example with VBA, XML and ASP is a practical, how-to book on Excel programming, suitable for readers already proficient with the Excel user interface (UI). If you are looking to automate Excel routine tasks, this book will progressively introduce you to programming concepts via numerous illustrated hands-on exercises. More advanced topics are demonstrated via custom projects. From recording and editing a macro and writing VBA code to working with XML documents and using Classic ASP pages to access and display data on the Web, this book takes you on a programming journey that will change the way you work with Excel. The book provides information on performing automatic operations on files, folders, and other Microsoft Office applications. It also covers proper use of event procedures, testing and debugging, and guides you through programming advanced Excel features such as PivotTables, PivotCharts, and the Ribbon interface. Features: Contains 28 chapters loaded with illustrated Hands-On exercises and projects that guide you through the VBA programming language. Each example tells you exactly where to enter code, how to test it, and then run it. Takes you from introductory topics--including recording and editing macros, using variables, and constants, writing subroutines/functions, conditional statements, and various methods of coding loops to repeat actions--to intermediate and advanced topics that include working with collections, class modules, arrays, file and database access, custom forms, error handling and debugging. Includes comprehensive coverage of native file handling in VBA, Windows Scripting Host (WSH), and low-level File Access. Demonstrates how to interact with Microsoft Access databases using both ADO and DAO Object Libraries to access and manipulate data. Includes chapters on programming charts, PivotTables, dialog boxes, custom forms, the Ribbon, Backstage View, context/shortcut menu customizations, as well as proper use of event procedures and callbacks. Provides a quick, “Hands-On” introduction to the data analysis and transformation processes using the Power Query feature and the “M” language formulas. Provides a practical coverage of using Web queries, HTML, XML, and VBScript in Classic ASP to retrieve and publish Excel data to the Web. ON THE COMPANION FILES (also available for download from the publisher by emailing proof of purchase to info@merclearning.com) All source code and supplemental files for the “Hands-On” exercises and custom projects All images from the text (including 4-color screenshots) |
| can't open file for writing: Beginning Programming with C For Dummies Dan Gookin, 2013-10-28 Learn the basics of programming with C with this fun and friendly guide! C offers a reliable, strong foundation for programming and serves as a stepping stone upon which to expand your knowledge and learn additional programming languages. Written by veteran For Dummies author Dan Gookin, this straightforward-but-fun beginner's guide covers the fundamentals of using C and gradually walks you through more advanced topics including pointers, linked lists, file I/O, and debugging. With a special focus on the subject of an Integrated Development Environment, it gives you a solid understanding of computer programming in general as you learn to program with C. Encourages you to gradually increase your knowledge and understanding of C, with each chapter building off the previous one Provides you with a solid foundation of understanding the C language so you can take on larger programming projects, learn new popular programming languages, and tackle new topics with confidence Includes more than 100 sample programs with code that are adaptable to your own projects Beginning Programming with C For Dummies assumes no previous programming language experience and helps you become competent and comfortable with the fundamentals of C in no time. |
| can't open file for writing: Mastering Visual Basic .NET Evangelos Petroutsos, 2006-02-20 VB Programmers: Get in Step with .NET With the introduction of Visual Basic .NET, VB transcends its traditional second-class status to become a full-fledged citizen of the object-oriented programming, letting you access the full power of the Windows platform for the first time. Written bythe author of the best-selling Mastering Visual Basic 6 this all-new edition is the resource you need to make a successful transition to .NET. Comprising in-depth explanations, practical examples, and handy reference information, its coverage includes: Mastering the new Windows Forms Designer and controls Building dynamic forms Using powerful Framework classes such as ArrayLists and HashTables Persisting objects to disk files Handling graphics and printing Achieving robustness via structured exception handling and debugging Developing your own classes and extending existing ones via inheritance Building custom Windows controls Building menus and list controls with custom-drawn items Using ADO.NET to build disconnected, distributed applications Using SQL queries and stored procedures with ADO.NET Facilitating database programming with the visual database tools Building web applications with ASP.NET and the rich web controls Designing web applications to access databases Using the DataGrid and DataList web controls Building XML web services to use with Windows and web applications Special topics like the Multiple Document Interface and powerful recursive programming techniques Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file. |
| can't open file for writing: UNIX and Perl to the Rescue! Keith Bradnam, Ian Korf, 2012-07-19 An accessible guide to learning the key features of Unix and Perl, written with the non-programmer in mind. |
| can't open file for writing: Ivor Horton's Beginning ANSI C++ Ivor Horton, 2008-01-01 * The previous title has proven sales success over 6 years; new edition is completely revised and updated, author is widely acknowledged as among the best authors on programming today! * Includes progressive text and examples, with each topic building on what has been learned previously * No specific prior programming experience necessary – Material is suited to both self-taught learners and structured courses * Written in an easy, effective tutorial style with all language features demonstrated through working examples * Explains what language elements are for and how they work * Demystifies the language by explaining all specialized terminology and jargon * Covers class templates in depth and includes an introduction to the Standard Template Library |
| can't open file for writing: Perl Notes For Professionals DR. Ashad Ullah Qureshi, 2023-03-01 Perl is a family of script programming languages that is similar in syntax to the C language. It is an older, open source, general use, interpreted language. Perl was developed with usability in mind. Its efficient design lets developers do a lot with a little bit of code. |
| can't open file for writing: New Approach to CBSE Computer Science XII , |
| can't open file for writing: Pro Django Marty Alchin, 2013-07-09 Learn how to leverage Django, the leading Python web application development framework, to its full potential in this advanced tutorial and reference. Updated for Django 1.5 and Python 3, Pro Django, Second Edition examines in great detail the complex problems that Python web application developers can face and how to solve them. It provides in–depth information about advanced tools and techniques available in every Django installation, running the gamut from the theory of Django’s internal operations to actual code that solves real–world problems for high–volume environments. Pro Django, Second Edition goes above and beyond other books, leaving the basics far behind and showing how Django can do things even its core developers never expected. By drawing on the dynamic nature of Python, you can write Django applications that stretch the limits of what you thought possible! What you’ll learn Use Django’s models, views, forms, and templates Handle HTTP and customizing back ends Get the most out of Django’s common tooling Employ Django in various environments Build an API using Django's own components Make this code reusable—even distributable Who this book is for This book is for companies looking for a framework capable of supporting enterprise needs, as well as advanced Python or web developers looking to solve unusual, complex problems. Table of Contents Understanding Django Django Is Python Models URLs and Views Forms Templates Handling HTTP Backend Protocols Common Tools Coordinating Applications Enhancing Applications |
| can't open file for writing: Python Workout Reuven M. Lerner, 2020-07-02 The only way to master a skill is to practice. In Python Workout, author Reuven M. Lerner guides you through 50 carefully selected exercises that invite you to flex your programming muscles. As you take on each new challenge, you’ll build programming skill and confidence. Summary The only way to master a skill is to practice. In Python Workout, author Reuven M. Lerner guides you through 50 carefully selected exercises that invite you to flex your programming muscles. As you take on each new challenge, you’ll build programming skill and confidence. The thorough explanations help you lock in what you’ve learned and apply it to your own projects. Along the way, Python Workout provides over four hours of video instruction walking you through the solutions to each exercise and dozens of additional exercises for you to try on your own. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the technology To become a champion Python programmer you need to work out, building mental muscle with your hands on the keyboard. Each carefully selected exercise in this unique book adds to your Python prowess—one important skill at a time. About the book Python Workout presents 50 exercises that focus on key Python 3 features. In it, expert Python coach Reuven Lerner guides you through a series of small projects, practicing the skills you need to tackle everyday tasks. You’ll appreciate the clear explanations of each technique, and you can watch Reuven solve each exercise in the accompanying videos. What's inside 50 hands-on exercises and solutions Coverage of all Python data types Dozens more bonus exercises for extra practice About the reader For readers with basic Python knowledge. About the author Reuven M. Lerner teaches Python and data science to companies around the world. Table of Contents 1 Numeric types 2 Strings 3 Lists and tuples 4 Dictionaries and sets 5 Files 6 Functions 7 Functional programming with comprehensions 8 Modules and packages 9 Objects 10 Iterators and generators |
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