\HeaderA{compatibleVersions}{function to check to see if the packages represented by the names
passed have the same version number}{compatibleVersions}
\keyword{misc}{compatibleVersions}
\begin{Description}\relax
This function takes the names of installed R packages and then checks
to see if they all have the same version number.
\end{Description}
\begin{Usage}
\begin{verbatim}
compatibleVersions(...)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{...}] \code{...} character strings for the names of R
packages that have been installed
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
If all the package have the same version number, the function returns
TRUE. Otherwise, the function returns FALSE
\end{Details}
\begin{Value}
This function returns TRUE or FALSE depending on whether the packages
have the same version number
\end{Value}
\begin{Author}\relax
Jianhua Zhang
\end{Author}
\begin{SeeAlso}\relax
\code{\LinkA{packageDescription}{packageDescription}}
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}
if(require("hgu95av2") && require("GO")){
    compatibleVersions("hgu95av2", "GO")
}
\end{ExampleCode}
\end{Examples}