March 7, 2017

Programming Perl: Unmatched power for text processing and by Tom Christiansen

By Tom Christiansen

Followed because the undisputed Perl bible quickly after the 1st version seemed in 1991, Programming Perl remains to be the go-to advisor for this hugely functional language. Perl started existence as a super-fueled textual content processing application, yet speedy advanced right into a normal goal programming language that’s helped thousands of programmers, process directors, and lovers, such as you, get your activity done.
In this much-anticipated replace to «the Camel,» 3 well known Perl authors conceal the language as much as its present model, Perl 5.14, with a preview of good points within the upcoming 5.16. In an international the place Unicode is more and more crucial for textual content processing, Perl deals the simplest and least painful aid of any significant language, easily integrating Unicode everywhere—including in Perl’s preferred characteristic: normal expressions.
Important good points coated by means of this replace include:
New keyword phrases and syntax
I/O layers and encodings
New backslash escapes
Unicode 6.0
Unicode grapheme clusters and properties
Named captures in regexes
Recursive and grammatical patterns
Expanded insurance of CPAN
Current top practices

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Extra resources for Programming Perl: Unmatched power for text processing and scripting

Example text

Conventions Used in This Book Some of our conventions get larger sections of their very own. Coding conventions are discussed in the section on “Programming with Style” in Chapter 21. In a sense, our lexical conventions are given in the Glossary. The following typographic conventions are used in this book: SMALL CAPITALS Is used mostly for the formal names of Unicode characters, and for talking about Boolean operators. Italic Is used for URLs, manpages, pathnames, and programs. New terms are also italicized when they first appear in the text.

Perl’s better-and-better support is even acting as a testbed for future Unicode developments. In the previous edition of this book, we had all of that Unicode stuff in one chapter, but you’ll find it throughout this book when we need it. Regular expressions, the feature that many people associate with Perl, are even better. Other languages stole Perl’s pattern language, calling it Perl Compatible Regular Expressions, but also adding some features of their own. We’ve stolen back some of those features, continuing Perl’s tradition of taking the best ideas from everywhere and everything.

In the previous edition of this book, we had all of that Unicode stuff in one chapter, but you’ll find it throughout this book when we need it. Regular expressions, the feature that many people associate with Perl, are even better. Other languages stole Perl’s pattern language, calling it Perl Compatible Regular Expressions, but also adding some features of their own. We’ve stolen back some of those features, continuing Perl’s tradition of taking the best ideas from everywhere and everything. You’ll also find powerful new features for dealing with Unicode in patterns.

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