Defining operations

Special form


\begin{inset}{} \par Defines {\it variable\/} to be an operation. The syntax is ... ...iv$\ (DEFINE {\it var\/} (OPERATION UNDEFINED-EFFECT)) \end{codexenv}\end{inset}

Special form


\begin{inset}{} \par Defines {\it variable\/} to be an operation, as with {\tt D... .... {\it body\/}) \+ \\ ((SETTER SELF) THE-SETTER)))) \end{tabbing}} \end{inset}

Special form


\begin{inset}{} \par Defines {\it variable\/} to be an operation which, by defau... ...ue only for those objects returned by such {\tt OBJECT}-expressions. \end{inset}