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% File src/library/methods/man/showMethods.Rd
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% File src/library/methods/man/showMethods.Rd
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% Part of the R package, http://www.R-project.org
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% Part of the R package, http://www.R-project.org
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% Copyright 1995-2014 R Core Team
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% Copyright 1995-2015 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{showMethods}
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\name{showMethods}
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\alias{showMethods}
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\alias{showMethods}
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\alias{.S4methods}
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\title{Show all the methods for the specified function(s)}
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\title{Show all the methods for the specified function(s) or class}
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\description{
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\description{
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Show a summary of the methods for one or more generic functions,
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Show a summary of the methods for one or more generic functions,
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possibly restricted to those involving specified classes.
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possibly restricted to those involving specified classes.
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}
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}
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\usage{
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\usage{
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showMethods(f = character(), where = topenv(parent.frame()),
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showMethods(f = character(), where = topenv(parent.frame()),
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classes = NULL, includeDefs = FALSE,
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classes = NULL, includeDefs = FALSE,
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inherited = !includeDefs,
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inherited = !includeDefs,
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showEmpty, printTo = stdout(), fdef)
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showEmpty, printTo = stdout(), fdef)
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.S4methods(generic.function, class)
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}
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}
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\arguments{
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\arguments{
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\item{f}{one or more function names. If omitted, all functions
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\item{f}{one or more function names. If omitted, all functions
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will be shown that match the other arguments.
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will be shown that match the other arguments.
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\item{printTo}{The connection on which the information will be
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\item{printTo}{The connection on which the information will be
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shown; by default, on standard output.}
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shown; by default, on standard output.}
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\item{fdef}{Optionally, the generic function definition to use; if
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\item{fdef}{Optionally, the generic function definition to use; if
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missing, one is found, looking in \code{where} if that is specified.
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missing, one is found, looking in \code{where} if that is specified.
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See also comment in \sQuote{Details}.}
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See also comment in \sQuote{Details}.}
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\item{generic.function, class}{See \code{methods}.}
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}
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}
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\details{
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\details{
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See \code{methods} for a description of \code{.S4methods}.
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The name and package of the generic are followed by the list of
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The name and package of the generic are followed by the list of
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signatures for which methods are currently defined, according to the
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signatures for which methods are currently defined, according to the
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criteria determined by the various arguments. Note that the package
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criteria determined by the various arguments. Note that the package
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refers to the source of the generic function. Individual methods
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refers to the source of the generic function. Individual methods
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for that generic can come from other packages as well.
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for that generic can come from other packages as well.
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\seealso{
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\seealso{
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\code{\link{setMethod}}, and \code{\link{GenericFunctions}}
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\code{\link{setMethod}}, and \code{\link{GenericFunctions}}
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for other tools involving methods;
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for other tools involving methods;
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\code{\link{selectMethod}} will show you the method dispatched for a
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\code{\link{selectMethod}} will show you the method dispatched for a
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particular function and signature of classes for the arguments.
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particular function and signature of classes for the arguments.
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\code{\link{methods}} provides method discovery tools for light-weight
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interactive use.
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}
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}
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\examples{
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\examples{
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require(graphics)
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require(graphics)
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\dontshow{
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\dontshow{
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setClass("track",
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setClass("track",
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