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Allow definition of user defined constants in simple ini files, which are then processed like internal constants, without any of the usual performance penalties.

This module implements a series of allowed and denied access control lists for permissive controls. The Set::NestedGroups module is used to define users and nested permissive groups.

Data::Alias is a module that allows you to apply "aliasing semantics" to a section of code, causing aliases to be made wherever Perl would normally make copies instead. You can use this to improve efficiency and readability, when compared to using references.

Hold Data Set To Calculate Average

This module implements the semantics for perl6-style variable binding, as well as subroutine call argument passing and binding, in Perl 5.

Compare two perl data structures recursively. Returns 0 if the structures differ, else returns 1.

A data domain is a description of a set of values, either scalar or structured (arrays or hashes). The description can include many constraints, like minimal or maximal values, regular expressions, required fields, forbidden fields, and also contextual dependencies. From that description, one can then invoke the domain's inspect method to check if a given value belongs to it or not. In case of mismatch, a structured set of error messages is returned. The motivation for writing this package was to be able to express in a compact way some possibly complex constraints about structured data. Typically the data is a Perl tree (nested hashrefs or arrayrefs) that may come from XML, JSON, from a database through DBIx::DataModel, or from postprocessing an HTML form through CGI::Expand. Data::Domain is a kind of tree parser on that structure, with some facilities for dealing with dependencies within the structure, and with several options to finely tune the error messages returned to the user.

This module provide a single function called dump_xml() that takes a list of perl values as argument and produce a string as result. The string returned is an XML document that represents any perl data structures passed in. Reference loops are handled correctly. Seamus Venasse <svenasse@polaris.ca>

This class is a Perl version of Java's java.util.Properties and aims to be format-compatible with that class.

Given a list of scalars or reference variables, writes out their contents in perl syntax. The references can also be objects. The contents of each variable is output in a single Perl statement. Handles self-referential structures correctly. The return value can be evaled to get back an identical copy of the original reference structure.