Non-Determinism Monad for Level-Wise Search http://github.com/sebfisch/level-monad

Latest on Hackage:0.4.1

This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.

PublicDomain licensed by Sebastian Fischer
Non-Determinism Monad for Level-Wise Search

This Haskell library provides an implementation of the MonadPlus type
class that enumerates the levels of the search space using
breadth-first search or iterativ deepening.

A search space is formed by calls to `return` and `mplus` yielding a
search tree with solutions in its leaves. For example, in the monadic

return 1 `mplus` ((return 2 `mplus` return 3) `mplus` return 4)

the result 1 is in the second level, 4 in the third, and the results 2
and 3 are in the forth level. This is apparent from the following
representation of this monadic action:

/ \
return 1 `mplus`
/ \
`mplus` return 4
/ \
return 2 return 3

However, the implementation does not build this tree structure as a
data term but constructs its levels directly.

The library provides an operation to get the list of levels from a
non-deterministic computation. The nth element in this list contains
the results of the computation that are found on the nth level of the
Depends on 2 packages:
Used by 1 package:
comments powered byDisqus