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\subsection{readxml}
\label{labreadxml}
\noindent Name: \textbf{readxml}\\
\phantom{aaa}reads an expression written as a MathML-Content-Tree in a file\\[0.2cm]
\noindent Library name:\\
\verb| sollya_obj_t sollya_lib_readxml(sollya_obj_t)|\\[0.2cm]
\noindent Usage:
\begin{center}
\textbf{readxml}(\emph{filename}) : \textsf{string} $\rightarrow$ \textsf{function} $|$ \textsf{error}\\
\end{center}
Parameters:
\begin{itemize}
\item \emph{filename} represents a character sequence indicating a file name
\end{itemize}
\noindent Description: \begin{itemize}
\item The command \textbf{readxml} is now considered DEPRECATED in \sollya.
\item \textbf{readxml}(\emph{filename}) reads the first occurrence of a lambda
application with one bounded variable on applications of the supported
basic functions in file \emph{filename} and returns it as a \sollya
functional expression.
If the file \emph{filename} does not contain a valid MathML-Content tree,
\textbf{readxml} tries to find an "annotation encoding" markup of type
"sollya/text". If this annotation contains a character sequence
that can be parsed by \textbf{parse}, \textbf{readxml} returns that expression. Otherwise
\textbf{readxml} displays a warning and returns an \textbf{error} variable of type
\textsf{error}.
\end{itemize}
\noindent Example 1:
\begin{center}\begin{minipage}{15cm}\begin{Verbatim}[frame=single]
> readxml("readxmlexample.xml");
2 + x + exp(sin(x))
\end{Verbatim}
\end{minipage}\end{center}
See also: \textbf{printxml} (\ref{labprintxml}), \textbf{readfile} (\ref{labreadfile}), \textbf{parse} (\ref{labparse}), \textbf{error} (\ref{laberror})
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