None !"-24HMT A simple stepper, as suggested by Duncan Coutts in his Thesis paper, "Stream Fusion: Practical shortcut fusion for coinductive sequence types". This version adds a result type.)Map over the values produced by a stream.5mapS (+1) (fromList [1..3]) :: Stream Int Identity ()Stream [2,3,4]$  !"#       !"#$      !"# fusion-0.1.1FusionConsumerPipeProducerListTgetListTStreamStepList getStepListStepYieldSkipDonemapSconcatSfromList fromListM runEffecttoListS lazyToListS emptyStreambracketSnextconcatLeachmapP $fMonadListT$fApplicativeListT$fFunctorListT$fMonadTransStream$fApplicativeStream$fFunctorStream $fShowStream$fFunctorStepList