[cvs-nhc98] Avoid unnecessary pattern matching in ?ap? combinators.

olaf: Fri Apr 27 12:31:43 CEST 2001 Update of /usr/src/master/nhc/src/prelude/PreludeDebug In directory hinken:/tmp/cvs-serv3721/src/prelude/PreludeDebug Modified Files: PreludeDebug.hs Log Message: Avoid unnecessary pattern matching in ?ap? combinators. In those combinators where the trace component of a wrapped expression is not always needed, pattern matching on `R' is moved to a case expression in the combinator body. Time measurements are too imprecise to determine if this has any effect on runtime.