Hi, If you have a single optiona you can

sasomao — Wed, 23 Mar 2011 19:36:51 Z

Hi,

If you have a single optiona you can use Optional Ordererd Parameter (see ?parameter_classes)

something like that will do the job:

test:=proc(a,b,c:=NULL)
local d;
d:=a*b;
if c<>NULL then
print(c);
d:=d*c;
end if;
print(d);
end proc:


test(3,4,6);
                                      6
                                     72
test(3,5);
                                     15

Otherwise, if you need something more complicated, see ?overload

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