[Axiom-developer] Re: [Axiom-math] (no subject)

[Martin Rubey]

Ralf Hemmecke writes:

 > >  > (7) I tried using a list to return multiple variables from a
 > >  > function. However, this turns out to be of type any. These variables
 > >  > can be displayed but not used in operations any further. This means
 > >  > that you have to remember the types of each variable in the list.
 > >  > Then, manually in the calling function extract and explicitly typecast
 > >  > each variable in the returned list. Is there an easier way of doing
 > >  > this ??
 > 
 > I am somehow surprised that Axiom cannot work with multivalues.
 > 
 > (1) -> foo(a: Integer, b: Integer): (String, Integer) == ("sum", a+b);
 > 
 >     The constructor Tuple takes 1 argument and you have given  2  .
 > (1) -> foo: (Integer, Integer) -> (String, Integer)
 > 
 >     The constructor Tuple takes 1 argument and you have given  2  .
 > 

In axiom you need to use records:

foo(a: Integer, b: Integer): Record(s: String, r:Integer) == ("sum", a+b);

Martin

(Although I'm completely convinced that Aldor is superiour)