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\name{xmlApply}
\alias{xmlApply}
\alias{xmlApply.XMLNode}
\alias{xmlApply.XMLDocument}
\alias{xmlApply.XMLDocumentContent}
\alias{xmlSApply}
\alias{xmlSApply.XMLNode}
\alias{xmlSApply.XMLDocument}
\alias{xmlSApply.XMLDocumentContent}
\title{Applies a function to each of the children of an XMLNode}
\description{
These methods are simple wrappers for the
\code{\link{lapply}} and \code{\link{sapply}} functions.
They operate on the
sub-nodes of the XML node, and not on the fields of the node object itself.
}
\usage{
xmlApply(X, FUN, ...)
\method{xmlApply}{XMLNode}(X, FUN, ...)
\method{xmlApply}{XMLDocument}(X, FUN, ...)
\method{xmlApply}{XMLDocumentContent}(X, FUN, ...)
xmlSApply(X, FUN, ...)
\method{xmlSApply}{XMLNode}(X, FUN, ...)
\method{xmlSApply}{XMLDocument}(X, FUN, ...)
}
\arguments{
\item{X}{the \code{XMLNode} on whose children the regular
\code{\link{apply}} or \code{\link{sapply}} is to be performed}
\item{FUN}{the function to apply to each child node. This is passed
directly to the relevant \code{\link{apply}} function.}
\item{\dots}{additional arguments to be given to each invocation of
\code{FUN}. This is passed directly to the relevant \code{\link{apply}} function.}
}
\value{
The result is that obtained from calling
the \code{\link{apply}} or \code{\link{sapply}}
on \code{xmlChildren(x)}.
}
\references{
\url{https://www.w3.org/XML/},
\url{http://www.jclark.com/xml/},
\url{https://www.omegahat.net}
}
\author{Duncan Temple Lang}
\seealso{
\code{\link{xmlChildren}}
\code{\link{xmlRoot}}
\code{\link{[.XMLNode}}
\code{\link{sapply}}
\code{\link{lapply}}
}
\examples{
doc <- xmlTreeParse(system.file("exampleData", "mtcars.xml", package="XML"))
r <- xmlRoot(doc)
xmlSApply(r[[2]], xmlName)
xmlApply(r[[2]], xmlAttrs)
xmlSApply(r[[2]], xmlSize)
}
\keyword{file}
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