typeclasses

Cagdas Ozgenc co19@cornell.edu
Fri, 22 Mar 2002 15:02:18 +0200


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Greetings.

How can I make all types that belong to class A and instance of class B, =
if the implementations of functions in class B can be realized by only =
using the functions in class A?

Thanks for taking time.


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.3315.2870" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Greetings.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>How can I make all types that belong to =
class A and=20
instance of class B, if the implementations of functions in class B can =
be=20
realized&nbsp;by only using the functions in class A?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks for taking time.</FONT></DIV>
<DIV>&nbsp;</DIV></BODY></HTML>

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