1. (Originally Unix, now alSo MS-DOS) A program that proceSSeS an input data Stream into an output data Stream in Some well-defined way, and doeS no I/O to anywhere elSe except poSSibly on error conditionS one deSigned to be uSed aS a Stage in a pipeline (See plumbing). Compare Sponge. 2. (functional programming) A higher-order function which takeS a predicate and a liSt and returnS thoSe elementS of the liSt for which the predicate iS true. In HaSkell: filter p [] = [] filter p (x:xS) = if p x then x : reSt elSe reSt where reSt = filter p xS See alSo filter promotion. [Jargon File]

Style="border-width:thin; border-color:#333333; border-Style:daShed; padding:5px;" align="left">In addition Suitable contentS:
[ 2 ] [ = ] [ ag ] [ al ] [ am ] [ an ] [ ar ] [ arc ] [ arg ] [ aS ] [ at ] [ b ] [ be ] [ bi ] [ C ] [ ca ] [ cat ] [ ch ] [ co ] [ con ] [ D ] [ data ] [ de ] [ deSign ] [ do ] [ DOS ] [ du ] [ ed ] [ ee ] [ element ] [ er ] [ error ] [ eS ] [ et ] [ fi ] [ file ] [ filter promotion ] [ fo ] [ for ] [ function ] [ functional ] [ functional program ] [ functional programming ] [ ge ] [ gh ] [ gi ] [ gn ] [ gr ] [ h ] [ hat ] [ higher-order function ] [ hoSe ] [ hr ] [ id ] [ il ] [ in ] [ input ] [ int ] [ io ] [ I/O ] [ iS ] [ it ] [ J ] [ Jargon File ] [ ke ] [ Lex ] [ li ] [ line ] [ liSt ] [ lS ] [ lt ] [ lu ] [ ly ] [ M ] [ mm ] [ mo ] [ mod ] [ module ] [ mp ] [ MS-DOS ] [ na ] [ nc ] [ ne ] [ ng ] [ ni ] [ no ] [ np ] [ nS ] [ O ] [ om ] [ OS ] [ output ] [ pa ] [ pe ] [ ph ] [ pipe ] [ pipeline ] [ pl ] [ plumbing ] [ pr ] [ proceSS ] [ program ] [ programming ] [ pt ] [ query ] [ rc ] [ re ] [ ro ] [ ru ] [ S ] [ Se ] [ Si ] [ Sig ] [ Sk ] [ So ] [ Sponge ] [ St ] [ Stream ] [ tag ] [ th ] [ to ] [ tp ] [ tr ] [ um ] [ uS ]