úÎ#÷•     (c) Daan Leijen 2002 BSD-style Trustworthy@_5 filtrableA set of values a. filtrableO(1)$. The number of elements in the set. filtrableO(1). The empty set. filtrableO(1). Create a singleton set. filtrableO(log n)ƒ. Insert an element in a set. If the set already contains an element equal to the given value, it is replaced with the new value.4Safe@_ó  filtrablecClass of filtrable containers, i.e. containers we can map over while selectively dropping elements.Laws:   = id  f =  "   f  =  id   f =  (\ x -> ! " ( x) (f x))  g .  f =  (g # f)Laws if $ f: % g .   f = % (\ x -> ! & (g x) (f x)) filtrableVMap the container with the given function, dropping the elements for which it returns ". filtrable  =  '  filtrable3Drop the elements for which the given predicate is (.  filtrable[Traverse the container with the given function, dropping the elements for which it returns ".  filtrable3Drop the elements for which the given predicate is (.  filtrable:Map the container with the given function, collecting the ) s and the * s separately.  filtrable?Traverse the container with the given function, collecting the ) s and the * s separately. filtrable  =   ' filtrable\mathcal{O}(n^2)A Delete all but the first copy of each element, special case of . filtrable\mathcal{O}(n^2)I Delete all but the first copy of each element, with the given relation. filtrable\mathcal{O}(n\;\mathrm{log}\;n)A Delete all but the first copy of each element, special case of . filtrable\mathcal{O}(n\;\mathrm{log}\;n)I Delete all but the first copy of each element, with the given relation.    44+      !"#$"%&"'("#)"*+",-",."%/"%0123"45"467filtrable-0.1.4.0-inplaceData.Set.PrivateData.FiltrableSizeSetBinTipempty insertBy' FiltrablemapMaybe catMaybesfilter mapMaybeAfilterA mapEither mapEitherApartitionEithers<$?><*?>nubnubBynubOrdnubOrdBy$fFiltrableCompose$fFiltrableSum$fFiltrableProduct$fFiltrableConst$fFiltrableProxy$fFiltrableMaybe $fFiltrable[]size singleton<$!>base GHC.MaybeJustGHC.Basefmap Data.BoolboolNothing Control.Monad<=< Data.FoldableFoldablefoldMapmemptyidghc-prim GHC.TypesFalse Data.EitherLeftRight