Perl Debugger Pocket Reference (Paperback)

Most Perl programmers know about the Perl debugger--the nifty little built-in utility that you can use to fully debug any programs that you write. Inside the interactive debugger environment, you're prompted for commands that let you examine your source code, set breakpoints, dump out function call stacks, change values of variables, and much more. It's so convenient that some programmers run it just to test out Perl constructs as they create a program. But although it's on their radar, not many Perl programmers take the time to master the debugger. That's where the Perl Debugger Pocket Reference comes in.

This little book provides a quick and convenient path to mastery of the Perl debugger and its commands. Written by a core member of the Perl debugger development team, it's an ideal quick reference to debugger commands, as well as a detailed tutorial on how to get started. The Perl Debugger Pocket Reference provides complete coverage in a conveniently small package.

Maybe you write code so clean you never have to look at it twice. Or perhaps you'd rather focus your energies on writing clean code, rather than learning about the debugger. But if you need to learn about the Perl debugger in a hurry, the Perl Debugger Pocket Reference is the book you'll want to have close by. And you can always keep a copy on hand to share with programmers who need it more than you do.

O'Reilly's Pocket References have become a favorite among programmers everywhere. By providing a wealth of important details in a concise, well-organized format, these handy books deliver just what you need to complete the task at hand. When you've reached a sticking point in your work and need to get to a solution quickly, the new Perl Debugger Pocket Reference will get you back on the right track.

Table of Contents

      What Is the Perl Debugger?  


      Why Use the Debugger?  


      Unfamiliar Territory  


      About This Book  

                The linecounter.pl Script  

                Shell  

                Truncated Output  

                Versions of Perl  

                Delving Deeper  

                Conventions  

                Acknowledgments and Disclaimers  


      Before You Debug  

                Check Your Syntax  

                Use strict  

                Warnings  

                Diagnostics  

                Taint Mode  


      A Debugger Tutorial  

                Starting a Session  

                A Simple CGI Debugger Session


      Debugger Commands  

                Help and Quitting  

                Examining Data  

                Listing Code and Searching  

                Motion  

                Actions, Breakpoints, and Watchpoints  

                Perl, Pre-Prompt, and Post-Prompt Commands  

                Shell and Debugger Commands  

                Setting Options  


      Debugger Variables  

                $DB::* Variables  

                Environment Variables  


      Debugging Options  


      DB and Devel Namespaces  

                Runtime Sequence  

                DB::DB()  

                DB::sub ()  

                Devel Namespace (-d)  

                Useful Modules  

                -DDEBUGGING  


      References  

                perldoc  

                Books  

                URLs  

                Online Articles  

                History  

                GUIs-Graphical User Interfaces  

                Debuggers  

                Text Editors  


      Quick Reference  


      Index

大多數Perl程式設計師都知道Perl調試器，這是一個方便的內建工具，可以用來完全調試你編寫的任何程式。在交互式調試器環境中，你會被提示輸入命令，這些命令可以讓你檢查源代碼、設置斷點、輸出函數調用堆棧、更改變量值等等。它非常方便，一些程式設計師甚至在創建程式時就運行它來測試Perl結構。但儘管Perl調試器在他們的視線範圍內，但並不是很多Perl程式設計師花時間去掌握調試器。這就是《Perl調試器口袋參考》的用處所在。

這本小書提供了一條快速便捷的路徑，讓你掌握Perl調試器及其命令。由Perl調試器開發團隊的核心成員撰寫，它是一本理想的快速參考調試器命令的書籍，同時也是一本詳細的入門教程。《Perl調試器口袋參考》在一個方便的小包裝中提供了完整的覆蓋範圍。

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目錄：

什麼是Perl調試器？
為什麼使用調試器？
陌生的領域
關於本書
- linecounter.pl腳本
- Shell
- 截斷輸出
- Perl版本
- 深入探索
- 慣例
- 致謝和免責聲明

在調試之前
- 檢查語法
- 使用strict
- 警告
- 診斷
- Taint模式

調試器教程
- 開始一個會話
- 簡單的CGI調試器會話

調試器命令
- 幫助和退出
- 檢查數據
- 列出代碼和搜索
- 移動
- 操作、斷點和監視點
- Perl、提示前和提示後命令
- Shell和調試器命令
- 設置選項

調試器變量
- $DB::*變量