| % File src/library/base/man/typeof.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2007 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{typeof} |
| \alias{typeof} |
| \alias{type} |
| \title{The Type of an Object} |
| \description{ |
| \code{typeof} determines the (\R internal) |
| type or storage mode of any object |
| } |
| \usage{ |
| typeof(x) |
| } |
| \arguments{ |
| \item{x}{any \R object.} |
| } |
| \value{ |
| A character string. The possible values are listed in the structure |
| \code{TypeTable} in \file{src/main/util.c}. Current values are |
| the vector types \code{"logical"}, \code{"integer"}, \code{"double"}, |
| \code{"complex"}, \code{"character"}, \code{"raw"} and \code{"list"}, |
| \code{"NULL"}, |
| \code{"closure"} (function), \code{"special"} and \code{"builtin"} |
| (basic functions and operators), \code{"environment"}, \code{"S4"} |
| (some S4 objects) and others that are unlikely to be seen at user |
| level (\code{"symbol"}, \code{"pairlist"}, \code{"promise"}, |
| \code{"language"}, \code{"char"}, \code{"..."}, \code{"any"}, |
| \code{"expression"}, \code{"externalptr"}, \code{"bytecode"} and |
| \code{"weakref"}). |
| } |
| \seealso{ |
| \code{\link{mode}}, \code{\link{storage.mode}}. |
| |
| \code{\link{isS4}} to determine if an object has an S4 class. |
| } |
| \examples{ |
| typeof(2) |
| mode(2) |
| } |
| \keyword{attribute} |