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% File src/library/methods/man/methods-defunct.Rd
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2024 R Core Team
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% Distributed under GPL 2 or later
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\name{methods-defunct}
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\title{Defunct Functions in Package \pkg{methods}}
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\alias{methods-defunct}
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\alias{getAllMethods}
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\alias{mlistMetaName}
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\alias{removeMethodsObject}
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\alias{getAccess}
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\alias{getClassName}
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\alias{getClassPackage}
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\alias{getExtends}
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\alias{getProperties}
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\alias{getPrototype}
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\alias{getSubclasses}
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\alias{getVirtual}
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\alias{seemsS4Object}
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\alias{allGenerics}
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\alias{trySilent}
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\alias{traceOn}
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\alias{traceOff}
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%--------------- former \code{MethodsList} Objects ------------------------------
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% \code{MethodsList-class}:   ~~~~~~~~~~~
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\alias{MethodsList-class}
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\alias{body<-,MethodDefinition-method}
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%-----
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\alias{listFromMlist}%  only used in listFromMlist()
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\alias{linearizeMlist}% only used in showMlist()
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% finalDefaultMethod() [somewhat important]:
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\alias{finalDefaultMethod}
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%% were deprecated since R 3.2.0:
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\alias{MethodsList}
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\alias{makeMethodsList}
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\alias{SignatureMethod}
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\alias{insertMethod}
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\alias{inheritedSubMethodLists}
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\alias{showMlist}
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\alias{print.MethodsList}
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\alias{emptyMethodsList}
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\alias{insertMethodInEmptyList}
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\alias{mergeMethods}
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\alias{MethodsListSelect}
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% already removed:
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% \alias{linearizeMlist}
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% \alias{listFromMlist}
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% \alias{showMlist}
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%--------------------------- former {MethodsList} Objects -----------------------
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\description{
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  Defunct functions in package \pkg{methods}.
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}
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\usage{
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% Defunct in 2.8.0 ;  removed for 4.0.0
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getAccess(ClassDef)
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getClassName(ClassDef)
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getClassPackage(ClassDef)
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getExtends(ClassDef)
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getProperties(ClassDef)
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getPrototype(ClassDef)
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getSubclasses(ClassDef)
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getVirtual(ClassDef)
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getAllMethods(f, fdef, where)
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mlistMetaName (name, package)
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removeMethodsObject(f, where)
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seemsS4Object(object)
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% Defunct in 2.9.0;  removed for 4.0.0
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allGenerics()
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% Removed in 2.11.0
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trySilent(expr)
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% Defunct in 3.0.0;  removed for 4.0.0
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traceOn(what, tracer=browseAll, exit=NULL)
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traceOff(what)
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}
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\details{
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  The first block of functions should be replaced by direct access to
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  the slots, or by use of higher-level alternatives.
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  The functions and corresponding slots are:
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  \tabular{ll}{
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    \code{getAccess} \tab \code{"access"} \cr
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    \code{getClassName} \tab \code{"className"} \cr
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    \code{getClassPackage} \tab \code{"package"} \cr
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    \code{getExtends} \tab \code{"contains"} \cr
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    \code{getProperties} \tab \code{"slots"} \cr
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    \code{getPrototype} \tab \code{"prototype"} \cr
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    \code{getSubclasses} \tab \code{"subclasses"} \cr
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    \code{getVirtual} \tab \code{"virtual"}
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  }
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  \code{getAllMethods} replicated the behavior of
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  \code{\link{getMethods}}, which should be called instead to obtain
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  approximately the old behavior of \code{getAllMethods}.  However, a
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  better substitution is to use \code{\link{findMethods}}, which
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  returns a simpler structure.
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  \code{mlistMetaName} was a utility to  return the mangled
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  name for the object that stored the \code{MethodsList}
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  representation of the methods for a particular generic function,
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  typically in the environment of a package.  These objects are no
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  longer used.
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  \code{removeMethodsObject} removed the metadata object containing
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  methods for \code{f}.
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  \code{seemsS4Object} was similar to \code{\link{isS4}} and superseded
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  by the introduction of the S4 bit in \R 2.4.0.
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  \code{allGenerics} is superseded by \code{\link{getGenerics}}.
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  \code{trySilent(ex)} was a deprecated equivalent of \code{\link{try}(e,
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    silent=TRUE)}; in \R programming it is typically more efficient and
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  flexible to work with something like \code{\link{tryCatch}(ex,
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    error = function(e) e)} instead.
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  The functions \code{traceOn} and \code{traceOff} have been replaced by
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  extended versions of the functions \code{\link{trace}} and
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  \code{\link{untrace}}.
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}
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\seealso{
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  \code{\link{Defunct}}
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}
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\keyword{internal}