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| cant 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. |
| cant open file for writing: Programming in C++ J. B. Dixit, 2005 |
| cant 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 |
| cant open file for writing: x64 Assembly Language Step-by-Step Jeff Duntemann, 2023-09-21 The long-awaited x64 edition of the bestselling introduction to Intel assembly language In the newly revised fourth edition of x64 Assembly Language Step-by-Step: Programming with Linux, author Jeff Duntemann delivers an extensively rewritten introduction to assembly language with a strong focus on 64-bit long-mode Linux assembler. The book offers a lighthearted, robust, and accessible approach to a challenging technical discipline, giving you a step-by-step path to learning assembly code that’s engaging and easy to read. x64 Assembly Language Step-by-Step makes quick work of programmable computing basics, the concepts of binary and hexadecimal number systems, the Intel x86/x64 computer architecture, and the process of Linux software development to dive deep into the x64 instruction set, memory addressing, procedures, macros, and interface to the C-language code libraries on which Linux is built. You’ll also find: A set of free and open-source development and debugging tools you can download and put to use immediately Numerous examples woven throughout the book to illustrate the practical implementation of the ideas discussed within Practical tips on software design, coding, testing, and debugging A one-stop resource for aspiring and practicing Intel assembly programmers, the latest edition of this celebrated text provides readers with an authoritative tutorial approach to x64 technology that’s ideal for self-paced instruction. |
| cant 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. |
| cant open file for writing: Writing CGI Applications with Perl Kevin Meltzer, Brent Michalski, 2001 Are women insane? Are they really gluttons for punishment? Often left picking up their panties rather than the person they hoped to build a lifetime with, women continuously miss the obvious problem in dating ... and according to Shaun Upshaw, it's NOT men (at least not men alone).Driven by a guilty conscience, tormented by broken hearts left in his path and a concern for his daughter's future, Upshaw seeks to balance the dating game by injecting a dose of common sense. He feels it's the least he can do to repair the damage of the deadly dating schemes practiced by most men.In a very candid, clear fashion, Shaun brilliantly explains the pitfalls and problems of dating while offering some rules of engagement. This book will cause you to experience a varied array of emotions. You will feel angry, appalled, astonished, broken, used, and down right dumb. So why read this book? Great question...You will be enlightened and informed. Forced to the crossroad of decisions, you will have to look yourself in the mirror and answer some self-evaluating questions. To date or not to date... If your answer is 'to date'... you NEED this book. |
| cant open file for writing: Automate the Boring Stuff with Python Al Sweigart, 2015-04-14 If you’ve ever spent hours renaming files or updating hundreds of spreadsheet cells, you know how tedious tasks like these can be. But what if you could have your computer do them for you? In Automate the Boring Stuff with Python, you’ll learn how to use Python to write programs that do in minutes what would take you hours to do by hand—no prior programming experience required. Once you’ve mastered the basics of programming, you’ll create Python programs that effortlessly perform useful and impressive feats of automation to: Search for text in a file or across multiple filesCreate, update, move, and rename files and foldersSearch the Web and download online contentUpdate and format data in Excel spreadsheets of any sizeSplit, merge, watermark, and encrypt PDFsSend reminder emails and text notificationsFill out online forms Step-by-step instructions walk you through each program, and practice projects at the end of each chapter challenge you to improve those programs and use your newfound skills to automate similar tasks. Don’t spend your time doing work a well-trained monkey could do. Even if you’ve never written a line of code, you can make your computer do the grunt work. Learn how in Automate the Boring Stuff with Python. Note: The programs in this book are written to run on Python 3. |
| cant open file for writing: ARC/INFO , 1994 |
| cant open file for writing: Mastering C++ Programs J.B. Dixit, 2008 |
| cant open file for writing: Perl 5 Interactive Course Jon Orwant, 1998 This book combines the flexibility of self-paced learning with the support of a live course. The new edition includes the latest Perl specifications as well as Internet Explorer extensions, and provides the opportunities to earn Continuing Education Units from Marquette University. The CD-ROM includes Microsoft Internet Explorer, the latest Perl source code, and all the binaries needed to run Perl on the platform of choice. |
| cant open file for writing: Dr. Dobb's Journal , 2003 |
| cant 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. |
| cant open file for writing: ARC/INFO Documentation: AML and FormEdit , 1994 |
| cant open file for writing: Perl Graphics Programming Shawn Wallace, 2002-12-19 Graphics programmers aren't the only ones who need to be proficient with graphics. Web and applications programmers know that a dull web page can be quickly transformed into one that's interesting and lively with the use of well-planned graphics. And fortunately, you don't need the skills of a fulltime graphics programmer to use graphics effectively. From access counters and log report graphs to scientific plots and on-the-fly animated GIFs, graphics scripting is within the grasp of most web programmers. Using open source software, like Perl, you have the power to dynamically generate graphics based on user input and activity, easily manipulate graphics content, and optimize graphics for compression and quality.Geared toward Perl users and webmasters, Perl Graphics Programming focuses on open-source scripting programs that manipulate graphics files for use on the Web. The book demystifies the manipulation of graphics formats for newcomers to the Web with a practical, resource-like approach. With this book you'll learn to: Generate dynamic web graphics with charts, tables, and buttons Automate graphics tasks (thumbnails and borders) Create dynamics web documents (PDF, Postscript) Produce rich Internet experiences with Flash and SVG You'll begin with a tour of the most common web graphic file formats--PNG, JPEG, GIF, SWF, SVG, Postscript and PDF--then you'll explore the most powerful tools and Perl modules available for manipulating these graphics, such as GD, PerlMagick, and GIMP. Included in this part of the book is a thorough description of the Ming module for creating on-the-fly Flash files. Next, a cookbook section includes practical, all purpose recipes: GIF animation, generating images within a dynamic application, communicating between SWF front-end and Perl back-end, XSLT transformations, compression, and much more.Perl programmers naturally turn to Perl to tackle whatever challenge they have at hand, and graphics programming is no exception. Perl Graphics Programming provides all the tools you need to begin programming and designing graphics for the Web immediately. This book will change how you think about generating and manipulating graphics for the Web. |
| cant open file for writing: Network Programming with Perl Lincoln D. Stein, 2001 A text focusing on the methods and alternatives for designed TCP/IP-based client/server systems and advanced techniques for specialized applications with Perl. A guide examining a collection of the best third party modules in the Comprehensive Perl Archive Network. Topics covered: Perl function libraries and techniques that allow programs to interact with resources over a network. IO: Socket library ; Net: FTP library -- Telnet library -- SMTP library ; Chat problems ; Internet Message Access Protocol (IMAP) issues ; Markup-language parsing ; Internet Protocol (IP) broadcasting and multicasting. |
| cant open file for writing: PHP 7 in easy steps Mike McGrath, 2016-07-27 PHP 7 in easy steps will teach you to code server-side scripts, and demonstrates every aspect of the language you will need to produce professional web programming results. Its examples provide clear syntax-highlighted code showing PHP language basics including variables, arrays, logic, looping, functions, and classes. PHP 7 in easy steps begins by explaining how to install a free web server and the PHP interpreter to create an environment in which you can produce your very own data-driven server-side web pages. You will learn how to write PHP server-side scripts and how to make MySQL database queries. Examples illustrate how to store and retrieve Session Data, how to provide a Message Board, and how to access Web Services APIs over HTTP. PHP 7 in easy steps has an easy-to-follow style that will appeal to: anyone who wants to begin producing data-driven web pages.web developers wanting to add server-side interaction to their web sites.the programmer who quickly wants to add PHP to their skills set.the hobbyist who wants to begin creating scripts for upload to their own ISP.the student, and to those seeking a career in computing, who need a fundamental understanding of server-side programming with PHP. Using examples with free downloadable source code throughout, this guide will help you get started straight away – for smart learning! |
| cant open file for writing: Distillate Fuel Howard L. Chesneau, Michele M. Dorris, 1988 |
| cant open file for writing: Let us C 16th Edition kanetkar Yashavant, 2018-11-08 Let Us C has been part of learning and teaching material in mostO Over three million copies sold worldwide.Authentic Guide to C Programming LanguageBasic / Intermediate/Advanced C Programming, C Under Unix and GNOME Programming Using GTK Library DESCRIPTIONe; Simplicitye; -that has been the hallmark of this book in not only its previous fourteen English editions, but also in the Hindi, Gujarati, Japanese, Korean, Chinese and US editions. This book doesn't assume any programming background. It begins with the basics and steadily builds the pace so that the reader finds it easy to handle advanced topics towards the end of the book. Easter chapter contains: Lucid explanation of the conceptWell though-out, fully working programming examplesEnd-of-chapter exercises that would help you practise the skills learned in the chapterHand-crafted e;KanNotese; that would help you remember and revise the concepts covered in each chapterEngineering and Science Institutes round the country for years now.From last year or so, I received several suggestions that its size bepruned a bit, as many learners who learn C language in their Engineeringor Science curriculum have some familiarity with it. I am happy to fulfillthis request. I hope the readers would appreciate the lean look of thecurrent edition.In one of the previous edition I had realigned the chapters in such amanner that if a C programming course is taught using Let Us C, it can befinished in 22 lectures of one hour each, with one chapter's contentsdevoted to one lecture. I am happy that many readers liked this idea andreported that this has made their learning path trouble-free. A morerational reorganization of end-of-chapter exercises in the book has alsobeen well-received. Riding on that feedback I had introduced one morefeature in the fifteenth edition-KanNotes. These are hand-craftednotes on C programming. From the reader's emails I gather that theyhave turned out to be very useful to help revise their concepts on theday before the examination, viva-voce or interview.Many readers also told me that they have immensely benefitted fromthe inclusion of the chapter on Interview FAQs. I have improved thischapter further. The rationale behind this chapter is simple-ultimatelyall the readers of Let Us C sooner or later end up in an interview roomwhere they are required to take questions on C programming. I nowhave a proof that this chapter has helped to make that journey smoothand fruitful.All the programs present in the book (and some more) are available insource code form at www.kicit.com/books/letusc/sourcecode. You arefree to download them, improve them, change them, do whatever withthem. If you wish to get solutions for the Exercises in the book they areavailable in another book titled 'Let Us C Solutions'. If you want somemore problems for practice they are available in the book titled 'Let Us CWorkbook'. As usual, new editions of these t |
| cant open file for writing: Advancements, Applications, and Foundations of C++ Al Ajrawi, Shams, Jennings, Charity, Menefee, Paul, Mansoor, Wathiq, Alaali, Mansoor Ahmed, 2024-04-29 Many undergraduate students in computer science, engineering, and related disciplines struggle to master the complexities of the C++ programming language. Existing textbooks often need more depth and breadth to provide a comprehensive understanding, leaving students with fragmented knowledge and hindering their ability to tackle real-world programming challenges effectively. Advancements, Applications, and Foundations of C++ is a compelling solution to this problem, offering a comprehensive and accessible approach to learning C++. With eight carefully structured chapters covering fundamental and advanced topics, the book provides a scaffolded learning experience that guides students from basic concepts to more complex programming techniques. This book’s target audience includes undergraduate students, professionals seeking to improve their programming skills, and educators teaching programming courses. By offering a thorough and well-rounded education in C++, this textbook aims to empower students to succeed in their programming endeavors and contribute meaningfully to the field. |
| cant open file for writing: LET US C -15TH EDITION Yashavant Kanetkar, 2018-06-01 Description:e;Simplicitye;- That has been the hallmark of this book in not only its previous fourteen English editions, but also in the Hindi, Guajarati, Japanese, Korean, Chinese and US editions. This book does not assume any programming background. It begins with the basics towards the end of the book. Each Chapter Contains:Lucid explanation of the conceptwell thought-out, fully working programming examplesEnd of chapter exercises that would help you practise the learned in the chapterHand crafted e;kanNotese; that would help you remember and revise the concepts covered in each chapter. Table of Contents : Getting StartedC InstructionsDecision Control InstructionMore Complex Decision MakingLoop Control InstructionMore Complex RepetitionsCase Control InstructionFunctionsPointersRecursionData Types RevisitedThe C PreprocessorArraysMultidimensional ArraysStringsHandling Multiple StringsStructuresConsole Input/ OutputFile Input/ Output More Issues in Input/ OutputOperations on BitsMiscellaneous FeaturesC Under LinuxInterview FAQ'sAppendix A- Compilation and ExecutionAppendix B- Precedence tableAppendix C-Chasing the BugsAppendix D- ACII ChartPeriodic Tests I to IVIndex |
| cant open file for writing: Excel 2003 VBA Programming with XML and ASP Julitta Korol, 2006 |
| cant open file for writing: Using QuickC Werner Feibel, 1989 This edition teaches the user to program in two environments: the newest version of Microsoft QuickC and the compatible Microsoft C compiler version 5.0. Leads novice programmers from basics to intermediate techniques, and will serve as a lasting reference for experienced C programmers. |
| cant open file for writing: BeOS Martin C. Brown, 1998-08-10 While the BeOS is a fundamentally new operating system, under the hood it contains a lot of UNIX-like features, and aims to be largely POSIX compliant. This book explores the BeOS from a POSIX programmer's vantage point, providing the programmer a comprehensive guide to getting these applications to run on this new platform. |
| cant 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. |
| cant open file for writing: Scripting with Objects Avinash C. Kak, 2017-07-27 Object-Oriented scripting with Perl and Python Scripting languages are becoming increasingly important for software development. These higher-level languages, with their built-in easy-to-use data structures are convenient for programmers to use as glue languages for assembling multi-language applications and for quick prototyping of software architectures. Scripting languages are also used extensively in Web-based applications. Based on the same overall philosophy that made Programming with Objects such a wide success, Scripting with Objects takes a novel dual-language approach to learning advanced scripting with Perl and Python, the dominant languages of the genre. This method of comparing basic syntax and writing application-level scripts is designed to give readers a more comprehensive and expansive perspective on the subject. Beginning with an overview of the importance of scripting languages—and how they differ from mainstream systems programming languages—the book explores: Regular expressions for string processing The notion of a class in Perl and Python Inheritance and polymorphism in Perl and Python Handling exceptions Abstract classes and methods in Perl and Python Weak references for memory management Scripting for graphical user interfaces Multithreaded scripting Scripting for network programming Interacting with databases Processing XML with Perl and Python This book serves as an excellent textbook for a one-semester undergraduate course on advanced scripting in which the students have some prior experience using Perl and Python, or for a two-semester course for students who will be experiencing scripting for the first time. Scripting with Objects is also an ideal resource for industry professionals who are making the transition from Perl to Python, or vice versa. |
| cant open file for writing: PHP Essentials Neil Smyth, 2010-09-03 The purpose of this book is bring the power and ease of use of PHP to anyone with a desire to learn PHP. It starts by covering the history of PHP before providing a high level overview of how PHP works and why it is so useful to web developers. It then moves on to cover each area of PHP in detail, from the basics of the scripting language through to object oriented programming, file and file system handling and MySQL and SQLite database integration. In addition, chapters are also provided covering the creation and handling of HTML based forms and maintaining state using both cookies and PHP sessions. Each topic area is accompanied by extensive real world examples intended to bring theory to life. |
| cant 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 |
| cant 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. |
| cant open file for writing: XY Write Revealed Herbert L. Tyson, 1990 This helpful guide reveals how to exploit the advanced features of this powerful and complicated word processor. |
| cant 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 |
| cant open file for writing: PHP5 and MySQL Bible Tim Converse, Joyce Park, Clark Morgan, 2004-04-26 This comprehensive tutorial and reference covers all the basics of PHP 5, a popular open source Web scripting language, and MySQL 4.012, the most popular open source database engine Explores why users need PHP and MySQL, how to get started, how to add PHP to HTML, and how to connect HTML Web pages to MySQL Offers an extensive tutorial for developing applications with PHP and MySQL Includes coverage of how to install, administer, and design MySQL databases independently of PHP; exception and error handling; debugging techniques; PostgreSQL database system; and PEAR database functions The authors provide unique case studies of how and where to use PHP drawn from their own extensive Web experience |
| cant open file for writing: Programming Bjarne Stroustrup, 2024-04-10 An Introduction to Programming by the Inventor of C++ Programming: Principles and Practice Using C++, Third Edition, will help anyone who is willing to work hard learn the fundamental principles of programming and develop the practical skills needed for programming in the real world. Previous editions have been used successfully by many thousands of students. This revised and updated edition Assumes that your aim is to eventually write programs that are good enough for others to use and maintain Focuses on fundamental concepts and techniques, rather than on obscure language-technical details Is an introduction to programming in general, including procedural, object-oriented, and generic programming, rather than just an introduction to a programming language Covers both contemporary high-level techniques and the lower-level techniques needed for efficient use of hardware Will give you a solid foundation for writing useful, correct, type-safe, maintainable, and efficient code Is primarily designed for people who have never programmed before, but even seasoned programmers have found previous editions useful as an introduction to more effective concepts and techniques Covers a wide range of essential concepts, design and programming techniques, language features, and libraries Uses contemporary C++ (C++20 and C++23) Covers the design and use of both built-in types and user-defi ned types, complete with input, output, computation, and simple graphics/GUI Offers an introduction to the C++ standard library containers and algorithms Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details. |
| cant open file for writing: C for Environmental Scientists and Engineers Y. Anjaneyulu, 2013-12-30 These days computers have become ubiquitous in almost all areas of education, be it science, engineering, arts or any other. Particularly biology and other natural science students often have to struggle with enormous data related to the field applications of scientific information. And computational technology becomes much more important when multiple factors have to be considered, compromised or contained in the field of environmental management. Primarily, C language is used in the field of academics. In this book the authors have provided a simple and direct approach to the practical utilisation of C programming for Environmental Management degree course and other natural science and technology students. The treatment of the subject is very simple and user-friendly so that anyone not familiar with C language but having basic acquaintance with computers can also use it and be benefited. |
| cant open file for writing: Learn to Program with Visual C# 2010 Express John Smiley, 2010-05-01 An Introductory text on C# using Visual C# 2010 Express Edition. The easiest technical book you'll ever read. Open it up and see for yourself. Join Professor Smiley's Visual Basic.Net class as he teaches essential skills in programming, coding and more. Using a student-instructor conversational format, this book starts at the very beginning with crucial programming fundamentals. You'll quickly learn how to identify customer needs so you can create an application that achieves programming objectives---just like experienced programmers. By identifying clear client goals, you'll learn important programming basics---like how computers view input and execute output based on the information they are given---then use those skills to develop real-world applications. Participate in this one-of-a-kind classroom experience and see why Professor Smiley is renowned for making learning fun and easy. |
| cant open file for writing: bookdown Yihui Xie, 2016-12-12 bookdown: Authoring Books and Technical Documents with R Markdown presents a much easier way to write books and technical publications than traditional tools such as LaTeX and Word. The bookdown package inherits the simplicity of syntax and flexibility for data analysis from R Markdown, and extends R Markdown for technical writing, so that you can make better use of document elements such as figures, tables, equations, theorems, citations, and references. Similar to LaTeX, you can number and cross-reference these elements with bookdown. Your document can even include live examples so readers can interact with them while reading the book. The book can be rendered to multiple output formats, including LaTeX/PDF, HTML, EPUB, and Word, thus making it easy to put your documents online. The style and theme of these output formats can be customized. We used books and R primarily for examples in this book, but bookdown is not only for books or R. Most features introduced in this book also apply to other types of publications: journal papers, reports, dissertations, course handouts, study notes, and even novels. You do not have to use R, either. Other choices of computing languages include Python, C, C++, SQL, Bash, Stan, JavaScript, and so on, although R is best supported. You can also leave out computing, for example, to write a fiction. This book itself is an example of publishing with bookdown and R Markdown, and its source is fully available on GitHub. |
| cant open file for writing: PHP and MySQL Web Development All-in-One Desk Reference For Dummies Janet Valade, 2011-03-03 If you want to build dynamic Web sites that encourage users to interact with them, PHP and MySQL are among the best tools you’ll find. PHP is a scripting language designed specifically for use on the Web, while MySQL is a database management system that works with it perfectly. Best of all, they’re free. It’s hard to beat that combination! PHP & MySQL Web Development All-in-One Desk Reference For Dummies is kind of one-stop shopping for the information you need to get up and running with these tools and put them to good use. It’s divided into six handy minibooks that cover setting up your environment, PHP programming, using MySQL, security, PHP extensions, and PHP Web applications. They make it easy to create a Web site where visitors can sign on, use shopping carts, complete forms, and do business with your business. It’s easy to find what you need in this handy guide. You’ll discover how to: Find and acquire all the tools you need and set up your development environment Build PHP scripts to make your Web site work Create a MySQL database that visitors can access Summarize and sort data results Design and implement user access control Build a shopping cart application Create extensions that make your site more useful With PHP & MySQL Web Development All-in-One Desk Reference For Dummies by your side, you’ll be a Web site guru before you know it! |
| cant open file for writing: Central European Functional Programming School Viktória Zsók, Zoltán Horváth, Lehel Csató, 2015-03-20 This volume presents the revised lecture notes of selected talks given at the Fifth Central European Functional Programming School, CEFP 2013, held in July 2013 in Cluj-Napoca, Romania. The 14 revised full papers presented were carefully reviewed and selected. The lectures cover a wide range of distributed and multicore functional programming subjects. The last 5 papers are selected papers of the PhD Workshop organized for the participants of the summer school. |
| cant 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. |
| cant open file for writing: Perl Best Practices Damian Conway, 2005-07-12 Many programmers code by instinct, relying on convenient habits or a style they picked up early on. They aren't conscious of all the choices they make, like how they format their source, the names they use for variables, or the kinds of loops they use. They're focused entirely on problems they're solving, solutions they're creating, and algorithms they're implementing. So they write code in the way that seems natural, that happens intuitively, and that feels good. But if you're serious about your profession, intuition isn't enough. Perl Best Practices author Damian Conway explains that rules, conventions, standards, and practices not only help programmers communicate and coordinate with one another, they also provide a reliable framework for thinking about problems, and a common language for expressing solutions. This is especially critical in Perl, because the language is designed to offer many ways to accomplish the same task, and consequently it supports many incompatible dialects. With a good dose of Aussie humor, Dr. Conway (familiar to many in the Perl community) offers 256 guidelines on the art of coding to help you write better Perl code--in fact, the best Perl code you possibly can. The guidelines cover code layout, naming conventions, choice of data and control structures, program decomposition, interface design and implementation, modularity, object orientation, error handling, testing, and debugging. They're designed to work together to produce code that is clear, robust, efficient, maintainable, and concise, but Dr. Conway doesn't pretend that this is the one true universal and unequivocal set of best practices. Instead, Perl Best Practices offers coherent and widely applicable suggestions based on real-world experience of how code is actually written, rather than on someone's ivory-tower theories on howsoftware ought to be created. Most of all, Perl Best Practices offers guidelines that actually work, and that many developers around the world are already using. Much like Perl itself, these guidelines are about helping you to get your job done, without getting in the way. Praise for Perl Best Practices from Perl community members: As a manager of a large Perl project, I'd ensure that every member of my team has a copy of Perl Best Practices on their desk, and use it as the basis for an in-house style guide.-- Randal Schwartz There are no more excuses for writing bad Perl programs. All levels of Perl programmer will be more productive after reading this book.-- Peter Scott Perl Best Practices will be the next big important book in the evolution of Perl. The ideas and practices Damian lays down will help bring Perl out from under the embarrassing heading of scripting languages. Many of us have known Perl is a real programming language, worthy of all the tasks normally delegated to Java and C++. With Perl Best Practices, Damian shows specifically how and why, so everyone else can see, too.-- Andy Lester Damian's done what many thought impossible: show how to build large, maintainable Perl applications, while still letting Perl be the powerful, expressive language that programmers have loved for years.-- Bill Odom Finally, a means to bring lasting order to the process and product of real Perl development teams.-- Andrew Sundstrom Perl Best Practices provides a valuable education in how to write robust, maintainable Perl, and is a definitive citation source when coaching other programmers.-- Bennett ToddI've been teaching Perl for years, and find the same question keeps being asked: Where can I find a reference for writing reusable, maintainable Perl code? Finally I have a decent answer.-- Paul FenwickAt last a well researched, well thought-out, comprehensive guide to Perl style. Instead of each of us developing our own, we can learn good practices from one of Perl's most prolific and experienced authors. I recommend this book to anyone who prefers getting on with the job rather than going back and fixing errors caused by syntax and poor style issues.-- Jacinta RichardsonIf you care about programming in any language read this book. Even if you don't intend to follow all of the practices, thinking through your style will improve it.-- Steven LembarkThe Perl community's best author is back with another outstanding book. There has never been a comprehensive reference on high quality Perl coding and style until Perl Best Practices. This book fills a large gap in every Perl bookshelf.-- Uri Guttman |
| cant open file for writing: Excel 2021 / Microsoft 365 Programming By Example Julitta Korol, 2022-12-07 Updated for Excel 2021 and based on the bestselling editions from previous versions, Excel 2021 / Microsoft 365 Programming by Example is a practical, how-to book on Excel programming, suitable for readers already proficient with the Excel user interface. 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 from scratch to programming the Ribbon interface and working with XML documents, 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 more advanced Excel features, such as working with VBA classes and raising your own events in standalone class modules. Includes companion files with source code, hands-on projects, and figures. FEATURES: Updated for Excel 2021 / Microsoft 365 and previous versions Includes 29 chapters and more than 275 applied examples and 10 projects Provides a practical coverage of using Web queries, HTML, XML, and VBScript Companion files with color screen captures, source code, and projects in the text |
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