[Haskell-cafe] ANNOUNCE: Multiplate 0.0.1

roconnor at theorem.ca roconnor at theorem.ca
Fri Nov 19 22:45:04 EST 2010

Multiplate is a lightweight generic library for mutually recursive data 
types that won't make Conor lose his lunch.

Multiplate is an alternative extension of the Uniplate/Compos core design 
to support mutually recursive datatypes in a way that is as powerful as 
Compos, almost as easy to use as Uniplate, and more portable than both of 

Multiplate does not require you to rewrite your data type, does not 
require run-time reflection, does not require GADTs, and does not even 
require multi-parameter type classes. It only requires rank 3 


A more detailed paper is forthcoming, but the library is available to try 
right now.

Russell O'Connor                                      <http://r6.ca/>
``All talk about `theft,''' the general counsel of the American Graphophone
Company wrote, ``is the merest claptrap, for there exists no property in
ideas musical, literary or artistic, except as defined by statute.''

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