"List::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 so small such that being individual extens...

"List::Util::PP" contains pure-perl implementations of all of the functions documented in List::Util. This is meant for when a compiler is not available, or when packaging for reuse without without installing modules. Generally, List::Util::MaybeXS s...

"List::Util::XS" can be used as a dependency to ensure List::Util was installed using a C compiler and that the XS version is installed. During installation $List::Util::XS::VERSION will be set to "undef" if the XS was not compiled. Starting with rel...

This module provides the same functions as List::Util, but falls back to pure perl implementations if the installed List::Util is too old to provide them. Picking between List::Util's XS accellerated functions and the PP versions is done on a per-sub...

Most of the time you will not need this module. Use List::Util instead. This module is useful for testing/benchmarking, or perhaps in the rare case where you cannot use any XS module (even core ones) or in the rare case where you cannot use *any* mod...

Just one function, a simple means of making a weighted random choice The implementation uses rand to calculate random numbers. EXPORT None by default. choose_weighted choose_weighted ($object_Aref, $weights_Aref ) or choose_weighted ($object_Aref, $w...

"List::Util::WeightedRoundRobin" is a utility for creating a weighted list based on the input and associated weights....

List::MoreUtils 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 howev...

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 howev...

Are you sick of trying to remember whether a particular helper is defined in List::Util, List::SomeUtils or List::UtilsBy? I sure am. Now you don't have to remember. This module will export all of the functions that either of those three modules defi...

List::Flat is a module with functions to flatten a deep structure of array references into a single flat list....

This module provides functions for slicing lists. This is helpful when you want to do a chain of manipulations on a list (map, grep, sort) and then slice, without the cumbersome "(...)[x]" syntax....

List::ToHash provides fast conversion list to hash by using lightweight callback API. "map" is so simple and good for readability. I usually use this in this situation. my $x = +{map { ($_->{id} => $_) } @users}; "List::Util::reduce" is a little tric...