add derived instances for Dual monoid
authorRoss Paterson <ross@soi.city.ac.uk>
Fri, 2 Feb 2007 19:08:47 +0000 (19:08 +0000)
committerRoss Paterson <ross@soi.city.ac.uk>
Fri, 2 Feb 2007 19:08:47 +0000 (19:08 +0000)
commitb5f74091bf655513e539c4048d789da89dd27ca7
tree65d9881d7d87e42d4cf3c150f294e32781fb110c
parent6d649fe2c10ce4191e80e4f0260e88aace883925
add derived instances for Dual monoid
Data/Monoid.hs