DEPRECATION NOTICE
==================

This repository is deprecated. 
The package is now maintained in a [fork](https://github.com/nbun/tree-monad).
Thanks to @nbun for taking over maintainership!


Non-Determinism Monad for Tree Search
=====================================

This Haskell library provides an implementation of the MonadPlus type
class that represents the search space as a tree whose constructors
represent mzero, return, and mplus.

Such a tree can be used to implement different search strategies,
e.g., by using a queue. It can also be used as a basis for parallel
search strategies that evaluate different parts of the search space
concurrently.