Before there was lens there was lens-family....
I'm pleased to announce the second major release of
the lens-family pacakges: lens-family-core-1.0.0 and lens-family-1.0.0.
They can be found at
* <http://hackage.haskell.org/package/lens-family-core>
* <http://hackage.haskell.org/package/lens-family>
I consider these packages to be kiddie-pool sized lens libraries for those
people who are, for whatever reason, too intimidated by the lens library.
I think this is a good way to get one's feet wet with lenses. The type
for lenses and traversals are completely compatible with the lens library.
This release brings two major developments to lens-family:
* Support for traversals and folds.
* The names have been all renamed to be mostly compatible with the lexicon
developed by lens.
With a common lexicon, I hope that users will find it easy to transition
from lens-family to lens when they outgrow the kiddie pool.
The lens-family-core package is a completely Haskell 98 package for those
who need the compatibility. The lens-family package is a wrapper around
lens-family-core that provides a few useful Rank 2 type synonyms to make
using functional references a little easier.
P.S. If edwardk is reading, I've used Ryan Ingram's definition from
<http://twanvl.nl/blog/haskell/cps-functional-references#comment-comment0>
to implement alongside so that it works for both lenses and getters. You
probably want to do the same.
--
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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