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  • Book Overview & Buying Visual Basic Quickstart Guide
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Visual Basic Quickstart Guide

Visual Basic Quickstart Guide

By : Aspen Olmsted
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Visual Basic Quickstart Guide

Visual Basic Quickstart Guide

5 (4)
By: Aspen Olmsted

Overview of this book

Whether you’re an absolute beginner or an experienced developer looking to learn the Visual Basic language, this book takes a hands-on approach to guide you through the process. From the very first chapters, you'll delve into writing programs, exploring core concepts such as data types, decision branching, and iteration. Additionally, you’ll get to grips with working with data structures, file I/O, and essential object-oriented principles like inheritance and polymorphism. This book goes beyond the basics to equip you with the skills to read and write code across the entire VB family, spanning VB Script, VBA, VB Classic, and VB.NET, enabling you to handle legacy code maintenance with ease. With clear explanations, practical examples, and hands-on exercises, this book empowers you to tackle real-world software development tasks, whether you're enhancing existing projects or embarking on new ones. It addresses common challenges like distinguishing between the variations of the VB programming language to help you choose the right one for your projects. Don't let VB's extensive legacy daunt you; embrace it with this comprehensive guide that equips you with practical, up-to-date coding skills to overcome the challenges presented by Visual Basic's rich history of over two decades.
Table of Contents (27 chapters)
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1
Part 1:Visual Basic Programming and Scripting
9
Part 2:Visual Basic Files and Data Structures
14
Part 3:Object-Oriented Visual Basic
20
Part 4:Server-Side Development

Variable Scope and Concurrency

Like many other server-side web technologies, Active Server Pages (ASP) follows the Hypertext Transfer Protocol (HTTP) stateless model. HTTP is the foundation of data communication on the World Wide Web. It is a stateless protocol, which means that each request made by a client to the server is independent and unrelated to previous requests. The server does not retain any information about the client’s previous requests, and each request is processed in isolation.

Statelessness in HTTP has some important implications:

  • No client context: The server does not keep track of the client’s state between requests. Each request contains all the necessary information for the server to process it.
  • Scalability: Stateless protocols are more scalable because servers do not need to maintain client state, allowing them to handle many concurrent requests without memory overhead.
  • No inherent session management: Since no session management...
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Visual Basic Quickstart Guide
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