add Monoid (Constant a b) instance
authorRoss Paterson <ross@soi.city.ac.uk>
Thu, 11 Jun 2015 21:55:20 +0000 (21:55 +0000)
committerRoss Paterson <ross@soi.city.ac.uk>
Thu, 11 Jun 2015 21:55:20 +0000 (21:55 +0000)
commit0c1c7a02f81de8cc6e5c71c89bfec55269f19189
treed57c2b89ccf8848370bb23ec1edbcfcafb5c4f95
parente2b295a73c0a815426fe5e79556c89741e7b7269
add Monoid (Constant a b) instance
Data/Functor/Constant.hs