William Bo Rothwell - Advanced Perl Programming: From Advanced to Expert
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- Book:Advanced Perl Programming: From Advanced to Expert
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Additionally, youll see advanced subroutine handling, then packages and namespaces. Furthermore, youll build advanced modules and install CPAN modules. Unlike Java and C++, modules have been around in Perl for a long time now. Along the way, youll learn and use POD mark up language for Perl documentation.
Moreover, youll get a survey of the many advanced features and data structures of the current Perl programming language. Youll also get a survey of the new features of the latest Perl 5.x release. After reading and using this book, youll have the tools, techniques, and source code to be an expert Perl programmer.
What You Will Learn
- Carry out command-line parsing and extract scripts
- Create references; return values from a reference; work with the ref Function and strict refs
- Work with advanced Perl data types using arrays, hashes, and hash of hashes
- Use Typeglobs for symbol table entries
- Build modules and install CPAN modules
- Write documentation for Perl using POD
- Work with the newest features in Perl, including the smartmatch operator, yada yada, automated regex modifiers, the CORE namespace and more
Those with experience with Perl or who have read Rothwells prior books, Beginning Perl Programming and Pro Perl Programming.
William Bo Rothwell: author's other books
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Any source code or other supplementary material referenced by the author in this book is available to readers on GitHub via the books product page, located at www.apress.com/9781484258620 . For more detailed information, please visit http://www.apress.com/source-code .
To all Perl Mongers, new and old.
Steve: Thanks for getting the ball rolling.
Matthew: Appreciate your "behind the scenes" guidance.
Mark: Great job keeping this project on track.
Massimo: Excellent work providing useful technical feedback.
At the impressionable age of 14,William Bo Rothwellcrossed paths with a TRS-80 Micro Computer System (affectionately known as a Trash 80). Soon after, the adults responsible for Bo made the mistake of leaving him alone with the TRS-80. He immediately dismantled it and held his first computer class, showing his friends what made this computer thing work. Since this experience, Bos passion for understanding how computers work and sharing this knowledge with others has resulted in a rewarding career in IT training. His experience includes Linux, Unix, DevOps tools, orchestration, security, and programming languages such as Perl, Python, Tcl, and Bash.
Bo can be contacted via LinkedIn: www.linkedin.com/in/bo-rothwell .
He has been programming and teaching how to program with Android, Perl, PHP, Java, VB, Python, C/C++, and MySQL for more than 20 years.
He holds a Master of Science degree in Computing Science from the University of Salerno, Italy.
He has worked as a project manager, software engineer, research engineer, chief security architect, information security manager, PCI/SCADA auditor, and senior lead IT security/cloud/SCADA architect for many years.
His technical skills include security, Android, cloud, Java, MySQL, Drupal, Cobol, Perl, web and mobile development, MongoDB, D3, Joomla, Couchbase, C/C++, WebGL, Python, Pro Rails, Django CMS, Jekyll, Scratch, and so on.
He worked as a visiting lecturer and supervisor for exercises at the Networking Laboratory of the Helsinki University of Technology (Aalto University). He holds four international patents (PKI, SIP, SAML, and Proxy areas).
He currently works as chief information security officer (CISO) for Cargotec Oyj, and he is a member of ISACA Finland Chapter Board.
Massimo has reviewed more than 45 IT books for different publishers and has coauthoredPro JPA in Java EE 8(Apress, 2018),Beginning EJB in Java EE 8(Apress, 2018), andPro Spring Security(Apress, 2019).
Perl command-line options arent necessarily an "advanced" topic. However, with the exception of a couple of common options, most Perl programmers dont explore command-line options until they have been working with Perl for a while. This is unfortunate as some of the command-line options provide some very useful features.
Option | Meaning |
|---|---|
- | Terminates options |
-0[octalnum] | Specifies the input record separator as an octal character |
-a | Turns on autosplit if used with the -n or -p options |
-c | Checks syntax only |
-d | Executes Perl using the debugger |
-Dnumber | Sets debugging flags |
-e perl cmd | Executes code listed on command line |
-F/pattern/ | Specifies what pattern to split on when -a is used |
-h | Displays a summary of command-line options |
-i[ext] | Tells Perl to edit files that are processed by <> in place |
-Idir | Specifies what directories to pre-append to the @INC array |
-l[octnum] | Enables automatic line-end processing |
-Mmodule | Executes use |
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