Note: For some extensions, Dave Beazley's SWIG system may provide a
significantly more convenient mechanism for creating the extension glue
-code. See L<http://www.cs.utah.edu/~beazley/SWIG> for more
+code. See L<http://www.swig.org> for more
information.
=head2 On The Road
=head2 Default Parameter Values
-Default values for XSUB arguments can be specified by
-placing an assignment statement in the parameter list. The
-default value may be a number or a string. Defaults should
+Default values for XSUB arguments can be specified by placing an
+assignment statement in the parameter list. The default value may
+be a number, a string or the special string C<NO_INIT>. Defaults should
always be used on the right-most parameters only.
To allow the XSUB for rpcb_gettime() to have a default host
THIS->set_blue( val );
+You could also write a single get/set method using an optional argument:
+
+ int
+ color::blue( val = NO_INIT )
+ int val
+ PROTOTYPE $;$
+ CODE:
+ if (items > 1)
+ THIS->set_blue( val );
+ RETVAL = THIS->blue();
+ OUTPUT:
+ RETVAL
+
If the function's name is B<DESTROY> then the C++ C<delete> function will be
called and C<THIS> will be given as its parameter. The generated C++ code for