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\name{genericFunction-class}
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\name{genericFunction-class}
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\docType{class}
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\docType{class}
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\alias{genericFunction-class}
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\alias{genericFunction-class}
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\alias{groupGenericFunction-class}
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\alias{groupGenericFunction-class}
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\title{Generic Function Objects }
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\title{Generic Function Objects }
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\description{
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\description{  Generic functions (objects from or extending class
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  Generic functions (objects from or extending class
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  \code{genericFunction}) are extended function objects,
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  \code{genericFunction}) are extended function objects,
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  containing information used in creating and dispatching methods for
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  containing information used in creating and dispatching methods for
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  this function.  They also identify the package associated with the
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  this function.  They also identify the package associated with the
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  function and its methods.}
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  function and its methods.
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}
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\section{Objects from the Class}{
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\section{Objects from the Class}{
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 Generic functions are created and assigned by
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  Generic functions are created and assigned by
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  \code{\link{setGeneric}} or \code{\link{setGroupGeneric}} and, indirectly, by
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  \code{\link{setGeneric}} or \code{\link{setGroupGeneric}} and, indirectly, by
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  \code{\link{setMethod}}.
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  \code{\link{setMethod}}.
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As you might expect \code{\link{setGeneric}} and
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  As you might expect \code{\link{setGeneric}} and
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\code{\link{setGroupGeneric}} create objects of class
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  \code{\link{setGroupGeneric}} create objects of class
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\code{"genericFunction"} and \code{"groupGenericFunction"} respectively.
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  \code{"genericFunction"} and \code{"groupGenericFunction"} respectively.
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}
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}
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\section{Slots}{
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\section{Slots}{
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  \describe{
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  \describe{
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    \item{\code{.Data}:}{Object of class \code{"function"}, the
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    \item{\code{.Data}:}{Object of class \code{"function"}, the
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        function definition of the generic, usually created
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        function definition of the generic, usually created
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        internally in method dispatch.  Don't expect to use it
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        internally in method dispatch.  Don't expect to use it
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        directly.}
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        directly.}
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  }
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  }
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}
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}
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\section{Extends}{
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\section{Extends}{
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Class \code{"function"}, from data part.
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  Class \code{"function"}, from data part.\cr
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Class \code{"OptionalMethods"}, by class "function".
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  Class \code{"OptionalMethods"}, by class "function".\cr
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Class \code{"PossibleMethod"}, by class "function".
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  Class \code{"PossibleMethod"}, by class "function".
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}
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}
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\section{Methods}{
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\section{Methods}{
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Generic function objects are used in the creation and dispatch of formal methods;
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  Generic function objects are used in the creation and dispatch of
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information from the object is used to create methods list objects and
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  formal methods; information from the object is used to create methods
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to merge or update the existing methods for this generic.
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  list objects and to merge or update the existing methods for this
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  generic.
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}
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}
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\keyword{classes}
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\keyword{classes}