A CPAN::Meta::Requirements object models a set of version constraints like those specified in the META.yml or META.json files in CPAN distributions, and as defined by CPAN::Meta::Spec. It can be built up by adding more and more constraints, and will reduce them to the simplest representation.

This module allows you to speed up your sleep(), alarm(), and time() calls.

Soundex is a phonetic algorithm for indexing names by sound, as pronounced in English. The goal is for names with the same pronunciation to be encoded to the same representation so that they can be matched despite minor differences in spelling.

This module implements the original soundex algorithm developed by Robert Russell and Margaret Odell, patented in 1918 and 1922, as well as a variation called "American Soundex" used for US census data, and current maintained by the National Archives and Records Administration (NARA).

This module converts Perl data structures to JSON and vice versa.

Scalar::String is about the string part of plain Perl scalars. A scalar has a string value, which is notionally a sequence of Unicode codepoints but may be internally encoded in either ISO-8859-1 or UTF-8. In places, more so in older versions of Perl, the internal encoding shows through. To fully understand Perl strings it is necessary to understand these implementation details. This module provides functions to classify a string by encoding and to encode a string in a desired way. The module is implemented in XS, with a pure Perl backup version for systems that cannot handle XS.

Adds support on top of MooseX::Traits for class precedence search for traits and some extra attributes.

This package allows you to make the file verdict (i.e., ok, NOT OK) colorful in test outputs.

Circos is a program for the generation of publication-quality, circularly composited renditions of genomic data and related annotations.

Date::Range is a library to work with date ranges. It can be used to determine whether a given date is in a particular range, or what the overlap between two ranges are.

This module provides various portable helper functions for module building modules.

Log::Any::Adapter::Log4perl provides a Log::Any adapter using Log::Log4perl for logging.

Authen-Passphrase is the base class for a system of objects that encapsulate passphrases. An object of this type is a passphrase recogniser; its job is to recognise whether an offered passphrase is the right one. For security such passphrase recognisers usually do not themselves know the passphrase they are looking for; they can merely recognise it when they see it. There are many schemes in use to achieve this effect and the intent of this class is to provide a consistent interface to them all. In addition to the base class, this module also contains implementations of several specific passphrase schemes.

This module intends to be a better Text::Wrap module. This module is needed to support multibyte character encodings such as UTF-8, EUC-JP, EUC-KR, GB2312, and Big5. This module also supports characters with irregular widths, such as combining characters (which occupy zero columns on terminal, like diacritical marks in UTF-8) and fullwidth characters (which occupy two columns on terminal, like most of east Asian characters). Also, minimal handling of languages which doesn't use whitespaces between words (like Chinese and Japanese) is supported.

CHI provides a unified caching API, designed to assist a developer in persisting data for a specified period of time.

The CHI interface is implemented by driver classes that support fetching, storing and clearing of data. Driver classes exist or will exist for the gamut of storage backends available to Perl, such as memory, plain files, memory mapped files, memcached, and DBI.

Filesys::Notify::Simple is a simple but unified interface to get notifications of changes to a given file system path. It uses inotify2 on Linux, fsevents on OS X, kqueue on FreeBSD, and FindFirstChangeNotification on Windows if they're installed, and falls back to a full directory scan if none of these are available.

This module allows one to run a subset of the subtest tests given in a test file.

The module declaration takes a whitelist of the subtests we want to run. Any subtest that doesn't match any of the whitelist items will be skipped (or potentially bypassed).

Encode module provides the interface between Perl strings and the rest of the system. Perl strings are sequences of characters.

Text::BibTeX is a Perl library for reading, parsing, and processing BibTeX files. Text::BibTeX gives you access to the data at many different levels: you may work with BibTeX entries as simple field to string mappings, or get at the original form of the data as a list of simple values (strings, macros, or numbers) pasted together.

This module implements an interface to the GNU Readline library. It gives you input line editing facilities, input history management facilities, completion facilities, etc. Term::ReadLine::Gnu is upwards compatible with Term::ReadLine.

Multidimensional disables multidimensional array emulation.

List::SomeUtils provides some trivial but commonly needed functionality on lists which is not going to go into List::Util.

All of the below functions are implementable in only a couple of lines of Perl code. Using the functions from this module however should give slightly better performance as everything is implemented in C. The pure-Perl implementation of these functions only serves as a fallback in case the C portions of this module couldn't be compiled on this machine.

This module is intended as a drop-in replacement for NEXT, supporting the same interface, but using Class::C3 to do the hard work.

String::Format lets you define arbitrary printf-like format sequences to be expanded. This module would be most useful in configuration files and reporting tools, where the results of a query need to be formatted in a particular way. It was inspired by mutt's .

Async::Interrupt implements a single feature only of interest to advanced perl modules, namely asynchronous interruptions (think "UNIX signals", which are very similar).

Sometimes, modules wish to run code asynchronously (in another thread, or from a signal handler), and then signal the perl interpreter on certain events. One common way is to write some data to a pipe and use an event handling toolkit to watch for I/O events. Another way is to send a signal. Those methods are slow, and in the case of a pipe, also not asynchronous - it won't interrupt a running perl interpreter.

This module implements asynchronous notifications that enable you to signal running perl code from another thread, asynchronously, and sometimes even without using a single syscall.