The R Project SVN R

Rev

Rev 68948 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 68948 Rev 74897
Line 1... Line 1...
1 
% File src/library/base/man/is.function.Rd
 1 
% File src/library/base/man/is.function.Rd
2 
% Part of the R package, https://www.R-project.org
 2 
% Part of the R package, https://www.R-project.org
3 
% Copyright 1995-2007 R Core Team
 3 
% Copyright 1995-2018 R Core Team
4 
% Distributed under GPL 2 or later
 4 
% Distributed under GPL 2 or later
5 
 
 5 
 
6 
\name{is.function}
 6 
\name{is.function}
7 
\alias{is.function}
 7 
\alias{is.function}
8 
\alias{is.primitive}
 8 
\alias{is.primitive}
Line 14... Line 14...
14 
\description{Checks whether its argument is a (primitive) function.}
 14 
\description{Checks whether its argument is a (primitive) function.}
15 
\arguments{
 15 
\arguments{
16 
  \item{x}{an \R object.}
 16 
  \item{x}{an \R object.}
17 
}
 17 
}
18 
\details{
 18 
\details{
19 
  \code{is.primitive(x)} tests if \code{x} is a primitive function
 19 
  \code{is.primitive(x)} tests if \code{x} is a \link{primitive} function,
20 
  (either a \code{"builtin"} or \code{"special"} as described for
 20 
  i.e, if \code{\link{typeof}(x)} is either \code{"builtin"} or
21 
  \code{\link{typeof}})?  It is a \link{primitive} function.
 21 
  \code{"special"}.
22 
}
 22 
}
23 
\value{
 23 
\value{
24 
  \code{TRUE} if \code{x} is a (primitive) function, and \code{FALSE}
 24 
  \code{TRUE} if \code{x} is a (primitive) function, and \code{FALSE}
25 
  otherwise.
 25 
  otherwise.
26 
}
 26 
}