Perl One-Liners: 130 Programs That Get Things Done
Однострочники на Perl: 130 программ, которые помогают добиться результата
Год издания: 2014
Автор: Krumins Peteris / Круминс Петерис
Издательство: No Starch Press
ISBN: 978-1-59327-520-4
Язык: Английский
Формат: PDF
Качество: Издательский макет или текст (eBook)
Интерактивное оглавление: Нет
Количество страниц: 178
Описание:
Part of the fun of programming in Perl lies in tackling tedious tasks with short, efficient, and reusable code. Often, the perfect tool is the one-liner, a small but powerful program that fits in one line of code and does one thing really well.
In
Perl One-Liners, author and impatient hacker Peteris Krumins takes you through more than 100 compelling one-liners that do all sorts of handy things, such as manipulate line spacing, tally column values in a table, and get a list of users on a system. This cookbook of useful, customizable, and fun scripts will even help hone your Perl coding skills, as Krumins dissects the code to give you a deeper understanding of the language.
You'll find one-liners that:
- Encode, decode, and convert strings
- Generate random passwords
- Calculate sums, factorials, and the mathematical constants π and e
- Add or remove spaces
- Number lines in a file
- Print lines that match a specific pattern
- Check to see if a number is prime with a regular expression
- Convert IP address to decimal form
- Replace one string with another
And many more! Save time and sharpen your coding skills as you learn to conquer those pesky tasks in a few precisely placed keystrokes with
Perl One-Liners.
Оглавление
Brief Contents
Contents in Detail
Acknowledgments
Chapter 1: Introduction to Perl One-Liners
Chapter 2: Spacing
Chapter 3: Numbering
Chapter 4: Calculations
Chapter 5: Working with Arrays and Strings
Chapter 6: Text Conversion and Substitution
Chapter 7: Selectively Printing and Deleting Lines
Chapter 8: Useful Regular Expressions
Appendix A: Perl’s Special Variables
Appendix B: Using Perl One-Liners on Windows
Appendix C: perl1line.txt
Index
