[Haskell-cafe] ANNOUNCE: lens-family 0.0.0

roconnor at theorem.ca roconnor at theorem.ca
Fri Jul 6 19:58:36 CEST 2012

I'm pleased to announce the first release of lens-family-core and 

This package provide first class(†) functional references. In addition to 
the usual operations of getting, setting and composition, plus integration 
with the state monad, lens families provide some unique features:

* Polymorphic updating
* Cast projection functions to read-only lenses
* Cast semantic editor combinators to modify-only lenses

(†) For optimal first-class support use the lens-family package with rank 
2 / rank N polymorphism. Lens.Family.Clone allows for first-class support 
of lenses for those who require Haskell 98.

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.''

More information about the Haskell-Cafe mailing list