Debug It Find Repair and Prevent Bugs in Your Code 1st Edition by Paul Butcher 193435628X 9781934356289

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Product details:

ISBN 10: 193435628X

ISBN 13: 9781934356289

Author: Paul Butcher

Some developers thrash around aimlessly looking for a bug without concrete results. Others have the knack of unerringly zeroing in on the root cause of a bug. Are they geniuses? Just lucky? No, they’ve learned the secrets of professional debugging. This book will equip you with the tools, techniques and approaches-proven in the crucible of professional software development-to ensure that you can tackle any bug with confidence. You’ll learn how to handle every stage of the bug life-cycle, from constructing software that makes debugging easy, through detection, reproduction, diagnosis and rolling out your eventual fix. If you develop software, sooner or later you’re going to discover that it doesn’t always behave as you intended. Working out why it’s misbehaving can be hard. Sometimes very hard. Debug It! is here to help! All bugs are different: there is no silver bullet. You’ve got to rely upon your intellect, intuition, detective skills and yes, even a little luck. But that doesn’t mean that you’re completely on your own-there is much you can learn from those who have gone before. This book distills decades of hard-won experience gained in the trenches of professional software development, giving you a head-start and arming you with the tools you need to get to the bottom of the problem, whatever you’re faced with. Whether you’re writing Java or assembly language, targeting servers or embedded micro-controllers, using agile or traditional approaches, the same basic bug-fixing principles apply. From constructing software that is easy to debug (and incidentally less likely to contain bugs in the first place), through handling bug reports to rolling out your ultimate fix, we’ll cover the entire life-cycle of a bug. You’ll learn about the empirical approach, which leverages your software’s unique ability to show you what’s really happening, the importance of finding a reliable and convenient means of reproducing a bug, and common pitfalls so you can avoid them. You’ll see how to use commonly available tools to automatically detect problems before they’re reported by customers and how to construct “transparent software” that provides access to critical information and internal state.

Table of contents:

I The Heart of the Problem

A Method in the Madness
Debugging is More Than “Making the Bug Go Away”
The Empirical Approach
The Core Debugging Process
First Things First
Put It in Action

Reproduce
Reproduce First, Ask Questions Later
Controlling the Software
Controlling the Environment
Controlling Inputs
Refining Your Reproduction
What If You Really Can’t Reproduce It?
Put it in Action

Diagnose
Stand Back—I’m Going to Try Science
Stratagems
Debuggers
Pitfalls
Mind Games
Validate Your Diagnosis
Put it in Action

Fix
Clearing the Decks
Testing
Fix the Cause, Not the Symptoms
Refactoring
Checking in
Get Your Code Reviewed
Put it in Action

Reflect
How Did it Ever Work?
What Went Wrong?
It’ll Never Happen Again
Close the Loop
Put it in Action

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II The Bigger Picture

Discovering That You Have a Problem
Tracking Bugs
Working with Users
Working with Support Staff
Put It in Action

Pragmatic Zero Tolerance
Bugs Take Priority
The Debugging Mind-Set
Digging Yourself Out of a Quality Hole
Put it in Action

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III Debug-Fu

Special Cases
Patching Existing Releases
Backward Compatibility
Concurrency
Heisenbugs
Performance Bugs
Embedded Software
Bugs in Third-Party Software
Put it in Action

The Ideal Debugging Environment
Automated Testing
Source Control
Automatic Builds
Put it in Action

Teach Your Software to Debug Itself
Assumptions and Assertions
Debugging Builds
Resource Leaks and Exception Handling
Put it in Action

Anti-patterns
Priority Inflation
Prima Donna
Maintenance Team
Firefighting
Rewrite
No Code Ownership
Black Magic
Put it in Action

A Resources
Source Control and Issue-Tracking Systems
Build and Continuous Integration Tools
Useful Libraries
Other Tools

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Tags: Paul Butcher, Debug, Repair, Prevent, Bugs