Debug

When the pressure is on to resolve an elusive software or hardware glitch, what’s needed is a cool head courtesy of a set of rules guaranteed to work on any system, in any circumstance. Written in a frank but engaging style, this book provides simple, foolproof principles guaranteed to help find any bug quickly. Recognized tech expert and author David Agans changes the way you think about debugging, making those pesky problems suddenly much easier to find and fix. Agans identifies nine simple, practical rules that are applicable to any software application or hardware system, which can help detect any bug, no matter how tricky or obscure. Illustrating the rules with real-life bug-detection war stories, Debugging shows you how to: Understand the system: how perceiving the ""roadmap"" can hasten your journey Quit thinking and look: when hands-on investigation can’t be avoided Isolate critical factors: why changing one element at a time can be an essential tool Keep an audit trail: how keeping a record of the debugging process can win the day Whether the system or program you’re working on has been designed wrong, built wrong, or used wrong, Debugging helps you think correctly about bugs, so the problems virtually reveal themselves.

Writing code is only half the battle in developing applications. Getting the bugs out is the other half - and it can be the frustrating part since, after all, bugs don't just mysteriously appear in your code. You have to put them there. But masterful debugging is more than a skill you can learn, it's a frame of mind, yes, almost a way of life. In "Debugging Visual FoxPro Applications", Nancy Folsom takes you into the head of a successful debugger, gives you a new perspective on the mind set, and then explores the myriad of tools that Visual FoxPro programmers have at their disposal.

A method for online assembly-language debugging which greatly simplifies several of the bookkeeping tasks characteristically associated with that process has been developed and implemented in a program for the UNIVAC M-460 computer at Air Force Cambridge Research Laboratories. With this program, an online user may insert or delete (in symbolic assembly language) any number of lines at any point in his previously assembled program in core, with the remainder of the program being relocated appropriately.

For today's programmers, it is impossible to foresee every input, every usage scenario, and every combination of applications that can cause errors when run simultaneously. Given all of these unknowns, writing absolutely bug-free code is unachievable. But it is possible, with the right knowledge, to produce nearly bug-free code and The Debugger's H

This book describes an approach and supporting infrastructure to facilitate debugging the silicon implementation of a System-on-Chip (SOC), allowing its associated product to be introduced into the market more quickly. Readers learn step-by-step the key requirements for debugging a modern, silicon SOC implementation, nine factors that complicate this debugging task, and a new debug approach that addresses these requirements and complicating factors. The authors’ novel communication-centric, scan-based, abstraction-based, run/stop-based (CSAR) debug approach is discussed in detail, showing how it helps to meet debug requirements and address the nine, previously identified factors that complicate debugging silicon implementations of SOCs. The authors also derive the debug infrastructure requirements to support debugging of a silicon implementation of an SOC with their CSAR debug approach. This debug infrastructure consists of a generic on-chip debug architecture, a configurable automated design-for-debug flow to be used during the design of an SOC, and customizable off-chip debugger software. Coverage includes an evaluation of the efficiency and effectiveness of the CSAR approach and its supporting infrastructure, using six industrial SOCs and an illustrative, example SOC model. The authors also quantify the hardware cost and design effort to support their approach.

The 2001 classic - available in eBook formats for the first time Perl Debugged provides the expertise and solutions developers require for coding better, faster, and more reliably in Perl. Focusing on debugging, the most vexing aspect of programming in Perl, this example-rich reference and how-to guide minimizes development, troubleshooting, and maintenance time resulting in the creation of elegant and error-free Perl code. Designed for the novice to intermediate software developer, Perl Debugged will save the programmer time and frustration in debugging Perl programs. Based on the authors’ extensive experience with the language, this book guides developers through the entire programming process, tackling the benefits, plights, and pitfalls of Perl programming. Beginning with a guided tour of the Perl documentation, the book progresses to debugging, testing, and performance issues, and also devotes a chapter to CGI programming in Perl. Throughout the book, the authors espouse defensible paradigms for improving the accuracy and performance of Perl code. In addition, Perl Debugged includes Scott and Wright’s "Perls of Wisdom" which summarize key ideas from each of the chapters, and an appendix containing a comprehensive listing of Perl debugger commands. In this exceptional reference and debugging guide, the authors cover every aspect of efficient Perl programming, including: CGI programming—special tips for debugging this type of Perl program How to develop the proper mindset for developing and programming effectively in Perl Perl "gotchas"—how to understand them, work around them, and avoid them "Antibugging"—the authors’ rules of thumb on how to code defensively The Perl debugger —the authors’ guide to using this Perl built-in Common syntax errors and how to track down their causes Semantical errors—why code may appear correct but the programs do not work How to improve the performance of resource-hungry programs Tips and advice for programmers moving to Perl from other language environments Focusing on the process of Perl programming and guidelines for identifying and correcting mistakes, Perl Debugged helps the developer to write better Perl programs immediately and become better programmers in general.

Provides information on using three debugging tools on the Linux/Unix platforms, covering such topics as inspecting variables and data structures, understanding segmentation faults and core dumps, using catchpoints and artificial arrays, and avoiding debu

This book teaches by example. It walks in detail through development of a sample application, illustrating each step via complete working code and either screenshots or console snippets. The cumbersome and time consuming task of debugging will be a cake walk with this book. If you are a Django application developer who wants to create robust applications quickly that work well and are easy to maintain in the long term, this book is for you. This book is the right pick if you want to be smartly tutored to make best use of Django's rich testing and debugging support and make testing an effortless task. Basic knowledge of Python, Django, and the overall structure of a database-driven web application is assumed. However, the code samples are fully explained so that even beginners who are new to the area can learn a great deal from this book.