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This module was mainly written for Net::XMPP2, Net::IRC3 and BS to provide a consistent API for registering and emitting events. Even though I originally wrote it for those modules I released it separately in case anyone may find this module useful.

The functions in this module implement or assist the writing of programs, or parts of them, in Continuation Passing Style (CPS). Briefly, CPS is a style of writing code where the normal call/return mechanism is replaced by explicit "continuations", values passed in to functions which they should invoke, to implement return behaviour.

The Perl Cache package provides Cache::Cache, a generic interface for creating persistent data stores. This interface is implemented by the Cache::MemoryCache, Cache::SharedMemoryCache, Cache::FileCache, Cache::SizeAwareFileCache, Cache::SizeAwareMemoryCache, and Cache::SizeAwareSharedMemoryCache classes. This work replaces File::Cache and IPC::Cache. -Anton <tobez@FreeBSD.org>

This module is used by Schmorp's modules during configuration stage to test the installed perl for compatibility with his modules. It's not, at this stage, meant as a tool for other module authors, although in principle nothing prevents them from subscribing to the same ideas.

Capture::Tiny provides a simple, portable way to capture anything sent to STDOUT or STDERR, regardless of whether it comes from Perl, from XS code or from an external program. Optionally, output can be teed so that it is captured while being passed through to the original handles.

This module collection manages coroutines. Coroutines are similar to threads but don't run in parallel. In this module, coroutines are defined as "callchain + lexical variables + @_ + $_ + $@ + $^W + C stack), that is, a coroutine has its own callchain, its own set of lexicals and its own set of perl's most important global variables.

Normally, if you try to call a method that there's no handler for, you get an error: Can't locate object method "flork" via package "X". But for classes that inherit from Class::BlackHole, unhandled methods become just no-operations.

Class::CodeStyler is an object oriented API to be used by code-generators in producing formatted code (Perl, C, other). The produced code file can also be syntax checked, displayed with line numbers, executed, and eval'd. Code can be inserted anywhere in the generated program using a system of bookmarks and jumps.

Class::Constant allows you declaratively created so-called "constant classes". These are very much like enumerated types (as close as a typeless language like Perl can get, at least). The classes generated by this module are modeled closely after Java's "typesafe enumeration" pattern, but with some added spice to make them more useful to Perl programs.

Cdecl composes compilable C declarations and typecasts from descriptive English phrases, and can also explain a complicated typecast or declaration. It handles ANSI C, C++, pre-ANSI C, and K&R C, and has TAB completion of keywords and line editing and history (provided by the GNU readline library).