function
1. (Or "map", "mapping") If D and C are sets (the domain and codomain) then a function f from D to C, normally written "f : D -> C" is a subset of D x C such that: 1. For each d in D there exists some c in C such that (d,c) is an element of f. I.e. the function is defined for every element of D. 2. For each d in D, c1 and c2 in C, if both (d,c1) and (d,c2) are elements of f then c1 = c2. I.e. the function is uniquely defined for every element of D. See also image, inverse, partial function. 2. <programming> Computing usage derives from the mathematical term but is much less strict. In programming (except in functional programming), a function may return different values each time it is called with the same argument values and may have side effects. A procedure is a function which returns no value but has only side-effects. The C language, for example, has no procedures, only functions. ANSI C even defines a type, void, for the result of a function that has no result. (1996-09-01) In addition suitable contents:
[ 2 ] [ = ] [ ag ] [ ai ] [ al ] [ am ] [ an ] [ ANS ] [ ANSI ] [ ANSI C ] [ app ] [ ar ] [ arc ] [ arg ] [ argument ] [ as ] [ at ] [ av ] [ b ] [ bo ] [ bot ] [ bs ] [ C ] [ ca ] [ ch ] [ co ] [ codomain ] [ D ] [ de ] [ diff ] [ do ] [ domain ] [ du ] [ ec ] [ ed ] [ edu ] [ ee ] [ element ] [ er ] [ es ] [ et ] [ fi ] [ file ] [ fo ] [ for ] [ fr ] [ functional ] [ functional program ] [ functional programming ] [ ge ] [ gr ] [ gu ] [ h ] [ hat ] [ hr ] [ id ] [ iff ] [ il ] [ image ] [ in ] [ inverse ] [ io ] [ iq ] [ is ] [ it ] [ la ] [ language ] [ Lex ] [ ls ] [ lt ] [ lu ] [ ly ] [ ma ] [ mall ] [ map ] [ mapping ] [ mm ] [ mo ] [ mod ] [ module ] [ mp ] [ mu ] [ N ] [ na ] [ nc ] [ ne ] [ ng ] [ ni ] [ nl ] [ no ] [ norm ] [ ns ] [ NSI ] [ O ] [ om ] [ pa ] [ partial function ] [ pe ] [ ph ] [ ping ] [ pl ] [ pr ] [ procedure ] [ program ] [ programming ] [ pt ] [ query ] [ rc ] [ re ] [ ro ] [ S ] [ sa ] [ sam ] [ se ] [ set ] [ SI ] [ si ] [ side-effect ] [ so ] [ st ] [ strict ] [ su ] [ T ] [ th ] [ to ] [ tr ] [ tt ] [ type ] [ ua ] [ um ] [ us ] [ va ] [ value ] [ ve ]
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