Jérôme Marant [Sunday 3 November 2002] :
 >
 > 
 > Hi,
 > 
 >   I know that I cannot use open types as method parameter types,
 >   like:
 > 
 >   method foo (w : #mother) = ....
 > 
 >   So, how can I pass to a method an object of a given class or
 >   of its inherited classes, i.e. how to work this limitation
 >   around?

Polymorphic methods ?

method foo : 'a. (#mother as 'a) -> ... = fun w -> ...

-- 
   Olivier
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