By Simon Cozens

With a global neighborhood of clients and greater than 1000000 devoted programmers, Perl has confirmed to be the best language for the most recent developments in computing and business.

Every programmer needs to stay alongside of the newest instruments and methods. This up-to-date model of Advanced Perl Programming from O'Reilly offers the basic wisdom of the fashionable Perl programmer. no matter what your present point of Perl services, this publication can help you push your talents to the subsequent point and develop into a extra comprehensive programmer.

O'Reilly's such a lot high-level Perl educational so far, Advanced Perl Programming, moment variation teaches you the entire advanced recommendations for production-ready Perl courses. This thoroughly up to date consultant truly explains thoughts similar to introspection, overriding built-ins, extending Perl's object-oriented version, and checking out your code for better stability.

Other issues include:

  • Complex facts structures
  • Parsing
  • Templating toolkits
  • Working with normal language data
  • Unicode
  • Interaction with C and different languages

In addition, this advisor demystifies as soon as complicated issues like object-relational mapping and event-based development-arming you with every thing you must thoroughly improve your skills.

Praise for the second one Edition:

"Sometimes the most important hurdle to challenge fixing is not the topic itself yet fairly the sheer variety of modules Perl offers. Advanced Perl Programming walks you thru Perl's TMTOWTDI ("There's multiple solution to Do It") wooded area, explaining and evaluating the easiest modules for every activity so that you can intelligently practice them in a number of situations." --Rocco Caputo, lead developer of POE

"It has been acknowledged that sufficiently complex Perl code is indistinguishable from magic. This publication of spells is going far to unlocking these secrets and techniques. It has the ability to rework the main humble programmer right into a Perl wizard." --Andy Wardley

"The info right here is not theoretical. It offers instruments and methods for fixing actual difficulties cleanly and elegantly." --Curtis 'Ovid' Poe

" Advanced Perl Programming collects richly deserved wisdom from the superior programmers within the Perl neighborhood, and explains it in a manner that even beginners can observe immediately." --chromatic, Editor of Perl.com

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We'd like an item database. item Database Pitfalls There should not many item databases on CPAN, and with sturdy cause: writing item databases is amazingly tough. First, you want to fear approximately tips on how to choose aside person gadgets and shop them individually, so you do not prove with the pruning challenge. moment, you might want to figure out a good strategy to index and question gadgets. Indexing and querying database rows ordinarily is beautiful effortless, yet gadgets? this is often at present one of many parts that holds Pixie again from being an item database. Allied with that, you want to figure out how you are going to map the homes of your item to garage in a smart approach to let such indexing; serialization-based strategies do not care approximately what is within an item, they simply write the whole lot right into a string. thankfully, you do not quite need to fear approximately this stuff; you could simply use a few of the present suggestions. Tangram Jean-Louis Leroy's Tangram is a mature and versatile yet advanced strategy to mapping Perl items onto database rows. Tangram is especially particular by way of what the person needs to do to make it paintings. other than in terms of filters, which we will examine in a second, Tangram is particularly brief on DWIM. for example, Tangram depends upon the consumer to supply loads of type info, which it makes use of to come to a decision find out how to map the items onto the database. this provides you even more flexibility approximately how the database is laid out, but when you do not quite care approximately that, it calls for you to do loads of tedious scaffolding paintings. To get Tangram up and working on our CD database, we needs to first outline the schema as a Perl information constitution. This tells Tangram the periods we are attracted to persisting, in addition to which attributes to avoid wasting and what facts varieties they'll be. this is the schema for our sessions: use Tangram; use Tangram::TimePiece; use DBI; use CD; our $schema = Tangram::Relational->schema({ periods => [ CD => { fields => { string => [ qw(title) ], timepiece => [ qw(publishdate) ], iarray => { songs => { classification => 'CD::Song', aggreg => 1, again => 'cd', }, }, }, }, 'CD::Song' => { fields => { string => [ qw(name) ], } }, 'CD::Artist' => { summary => 1, fields => { string => [ qw(name attractiveness) ], iset => { cds => { type => 'CD', aggreg => 1, again => 'artist' }, }, }, }, 'CD::Person' => { bases => [ "CD::Artist" ], fields => { string => [ qw(gender haircolor) ], timepiece => [ qw(birthdate) ], }, }, 'CD::Band' => { bases => [ "CD::Artist" ], fields => { timepiece => [ qw(creationdate enddate) ], set => { contributors => { classification => 'CD::Person', desk => "artistgroup", }, }, }, }, ]}); $dbh = DBI->connect($data_source,$user,$password); Tangram::Relational->deploy($schema, $dbh); $dbh->disconnect(); With the schema outfitted and deployed, we will shop, retrieve, and look for gadgets through Tangram::Storage gadgets, and for so-called distant items, which characterize a category of items of a specific style in garage. Tangram CRUD: create, learn, replace, delete we will be able to create and insert gadgets, like so: my ($cd, @songs, $band, @people); my $tom = CD::Band->new ({ identify => "Tom Waits", attractiveness => "1", cds => Set::Object->new ( $cd = CD->new({title => "Rain Dogs", songs => [ @songs = map {CD::Song->new({ identify => $_ })} "Singapore", "Clap Hands", "Cemetary Polka", ...

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