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Cpphs is a re-implementation of the C pre-processor that is both more compatible with Haskell, and itself written in Haskell so that it can be distributed with compilers. This version of the C pre-processor is pretty-much feature-complete and compatible with traditional (K&R) pre-processors. Additional features include: a plain-text mode; an option to unlit literate code files; and an option to turn off macro-expansion.

An either monad transformer.

Extensible optionally-pure exceptions.

Free monads are useful for many tree-like structures and Domain-Specific Languages.

Haddock is a documentation-generation tool for Haskell libraries.

Haddock is a documentation-generation tool for Haskell libraries. These modules expose some functionality of it without pulling in the GHC dependency.

Haddock is a documentation-generation tool for Haskell libraries.

Happy is a parser generator system for Haskell.

This package defines a class, 'Hashable', for types that can be converted to a hash value. This class exists for the benefit of hashing-based data structures. The package provides instances for basic types and a way to combine hash values.

This package provides a couple of different implementations of mutable hash tables in the ST monad, as well as a type class abstracting their common operations, and a set of wrappers to use the hash tables in the IO monad.