úÎ‰å    Safe69:;QR By defaulta `extend` b = a Nothing `extend` Just a = Just a To use the Extend- class, simply make your data derive Generic.-If "a" is a user defined data type, then all Nothing; fields of "a" are replaced by corresponding fields in "b",ie, all Just9 fields in "a" will override corresponding fields in "b".      (c) Yu Li, 2015BSDylilarry@gmail.com experimentalGHC extensionsSafe      2data-extend-generic-0.1.0.0-1VDQ2wrqPrPJ4lXx4ijTLGData.Extend.Internal Data.ExtendExtendextendGExtendgExtend $fExtenda $fExtendMaybe $fGExtendM1 $fGExtend:+: $fGExtend:*: $fGExtendK1 $fGExtendU1 $fGExtend:*:0