From: Ross Paterson <ross@soi.city.ac.uk>
Date: Thu, 17 Aug 2006 23:50:41 +0000 (+0000)
Subject: add mapMaybe and mapEither, plus WithKey variants
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=5d30f3426e4153aebb7022f7dbda05647a3cb891;hp=5d30f3426e4153aebb7022f7dbda05647a3cb891;p=haskell-directory.git

add mapMaybe and mapEither, plus WithKey variants
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