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Gearman is a system to farm out work to other machines, dispatching function calls to machines that are better suited to do work, to do work in parallel, to load balance lots of function calls, or to call functions between languages. This is the Perl client component.

Hash::NoRef is a Perl module to create HASH that store values without increase the reference count (weak references). This can be used to store objects but without interfere in the DESTROY mechanism, since the reference in this HASH won't count.

IO::Multiplex is designed to take the effort out of managing multiple file handles. It is essentially a really fancy front end to the select system call. In addition to maintaining the select loop, it buffers all input and output to/from the file handles. It can also accept incoming connections on one or more listen sockets.

Hash::Case is the base class for various classes which tie special treatment for the casing of keys. Be aware of the differences in implementation: Lower and Upper are tied native hashes: these hashes have no need for hidden fields or other assisting data structured. A case Preserve hash will actually create three hashes.

Under older perls this module provides a drop in compatible api to Hash::Util::FieldHash using perltie. When Hash::Util::FieldHash is available it will use that instead. This way code requiring field hashes can benefit from fast, robust field hashes on Perl 5.10 and newer, but still run on older perls that don't ship with that module.

IO::Pipely - Portably create pipe() or pipe-like handles, one way or another. Pipes are troublesome beasts because there are a few different, incompatible ways to create them. Not all platforms support all ways, and some platforms may have hidden difficulties like incomplete or buggy support.

The IPC::Mmap::Share was born out of the need to share structures among processes that come from the same ancestor. It tries to do so in a very simple and straightforward manner. Just create an IPC::Mmap::Share object, and use set to store your data and get to get it back.

List::Gen provides higher order functions, list comprehensions, generators, iterators, and other utility functions for working with lists. walk lists with any step size you want, create lazy ranges and arrays with a map like syntax that generate values on demand. there are several other hopefully useful functions, and all functions from List::Util are available.

Inline::ASM allows you to write Perl subroutines in assembly language. Of course, many C compilers allow you to put assembly right in your C code, so this module does not provide any new functionality. It does, however, provide a feature most C compilers don't: you can mix different assembler syntaxes in the same file!

This module is a subclass of Locale::Maketext, with additional support for localizing messages that already contains interpolated variables. This is most useful when the messages are returned by external modules -- for example, to match dir: command not found against [_1]: command not found.