"Scalar::Util" contains a selection of subroutines that people have expressed would be nice to have in the perl core, but the usage would not really be high enough to warrant the use of a keyword, and the size would be so small that being individual ...

This module provides a set of utility routines that efficiently manipulate bits in vec strings. Highly optimized XS functions are used whenever possible, but straightforward pure Perl replacements are also available for platforms without a C compiler...

This module exports a number of wrappers around perl's builtin "grok_number" function, which returns the numeric type of its argument, or 0 if it isn't numeric....

This module is DEPRECATED. Please use Ref::Util instead. This is an alternate interface to "Scalar::Util"'s "reftype" function. Instead of manual type checking you can just call methods on the result to see if matches the desired type....

Scalar::Util::Instance provides is-a predicates to look up an is-a hierarchy for specific classes. This is an alternative to "blessed($obj) && $obj->isa(...)", but is significantly faster than it....

This module is written mainly for the convenience of Data::Sah, as a drop-in pure-perl replacement for the XS module Scalar::Util::Numeric, in the case when Data::Sah needs to generate code that uses PP modules instead of XS ones. Not all functions f...

"Scalar::Util::LooksLikeNumber" contains looks_like_number() like "Scalar::Util"'s looks_like_number(), except it returns the raw value from the C function. Scalar::Util used to do this also, but it returns a booleanized value since 1.39....

Similar to "Hsah::MoreUtils" and "List::MoreUtils", "Scalar::MoreUtils" contains trivial but commonly-used scalar functionality. Essentially, provide some pretty trivial functionality that I find useful over and over. The value of this module will pr...

It has long been noted that Perl would benefit from a "does()" built-in. A check that "ref($thing) eq 'ARRAY'" doesn't allow you to accept an object that uses overloading to provide an array-like interface. Functions "does($scalar, $role)" Checks if ...

Scalar::Alias allows you to declare lexical scalar aliases. There are many modules that provides variable aliases, but this module is faster than any other alias modules, because it walks into compiled syntax trees and inserts custom opcodes into the...

Module::Generic as its name says it all, is a generic module to inherit from. It is designed to provide a useful framework and speed up coding and debugging. It contains standard and support methods that may be superseded by your the module using Mod...

This simple module can make scalars read-only. Useful to protect configuration variables, for example. This module can also be used to subvert Perl's many read-only variables to potential evil trickery. readonly Ths function takes a scalar variable a...

Scalar::Classify provides a routine named "classify" that can be used to examine a given argument to determine it's type and class (if any). Here "type" means either the return from reftype (, or if it's a scalar, a code indicating whether it's a str...

The autobox module promotes Perl's primitive types (literals (strings and numbers), scalars, arrays and hashes) into first-class objects. However, autobox does not provide any methods for these new classes. autobox::CORE provides a set of methods for...

The Class::Delegation module simplifies the creation of delegation-based class hierarchies, allowing a method to be redispatched: * to a single nominated attribute, * to a collection of nominated attributes in parallel, or * to any attribute that can...

This module create a SCALAR with multiple values, where this values can be randomic or can change by a defined period....

This modules provides a collection of test utilities for scalar variables. Load the module through Test::Data. Functions blessed_ok( SCALAR ) Ok if the SCALAR is a blessed reference. POD ERRORS Hey! The above document had some coding errors, which ar...

Constants "Any" "Item" "Bool" "Undef" "Defined" "Value" "Str" "Num" "Int" "ClassName" "RoleName" "Ref" "ScalarRef" "ArrayRef" "HashRef" "CodeRef" "RegexpRef" "GlobRef" "FileHandle" "Object"...