Lookahead and lookbehind, collectively called "lookaround", are zero-length assertions just like the start and end of line, and start and end of word anchors explained earlier in this tutorial. The difference is that lookaround actually matches characters, but then gives up the match, returning only the result: match or no match. That is why they are called "assertions". They do not consume characters in the string, but only assert whether a match is possible or not. Lookaround allows you to create regular expressions that are impossible to create without them, or that would get very longwinded without them.

Mojolicious provides a utility class, ojo, that allows us to leverage the power of Mojolicious from the command line:

perl -Mojo -E 'say g("http://goo.gl/EsGk3b")->text'

The -M flag tells perl to load the following module, so -Mojo, despite looking like a super secret Mojo flag to perl actually is a cheeky way of saying use ojo.

ojo provides a whole host of single letter functions that are shortcuts to Mojolicious utilities, allowing you to quickly do things like fetching urls, reading and writing files, encoding and decoding json, manipulating data structures and a whole host more.

Hello all, this is a fourth blog post in the Machine learning in Perl series, focusing on the AI::MXNet, a Perl interface to Apache MXNet, a modern and powerful machine learning library.

The Perl Conference 2018

Transformation helper function

Data::Fake

Interested in writing an article for Perl.com? Perhaps you want to get the word out about your new startup, provide a tutorial on your favorite module, or have community news to share. This document is for you.

Recently at $work we were discussing some of the behaviours of WWW::Mechanize when submitting forms. For instance, when you pass the fields parameter to the submit_form() method, Mechanize might take a very lax approach to submitting your data. Imagine the following form:

Changing en passant

/usr/man/man3/foo.1 changes to /usr/man/cat3/foo.1

($catpage  = $manpage)  =~ s/man(?=\d)/cat/;

Use foreach() Loops
@bindirs = qw( /usr/bin /bin /usr/local/bin );
for (@libdirs = @bindirs) { s/bin/lib/ }

Use Hashes of Records, not Parallel Arrays
for $his ($people{"Jason"}) {
$his->{AGE} = 23;
$his->{DAD} = "Herbert";
}

The Web Framework Is Dead

The main problem with Web Frameworks is the "Web"-part.

You either have a good web framework (Catalyst, Dancer) which makes it hard to reuse your code in non-web-contexts (and there are a lot of those: cronjobs, tests, fixup scripts, daemons, importer & exporter, ...); or you have a "closed system" like Mojolicous or Ruby on Rails, which tend to include everything (i.e. they come with their own email-system, cron-replacement, event loop, ...) but sort of drift away from the main language and generate their own ecosystem / walled garden.

He are the slides from my talk at #lpw2014 on how to conduct yourself as a Developer in an interview for further information please get in touch rick@eligo.co.uk

Speedometer : An easy interface to the Benchmark module to compare the performance of two Perl Files. I have written one small module(Speedometer.pm). need reviews. Thanks.

A couple of examples of modules which do the escaping correctly are
Mojo::Util
and
HTML::Entities