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From: "Herwig Lejsek" <herwig.lejsek@gmx.at>
Newsgroups: comp.lang.ada
Subject: graphs in ada (combining two generic units referencing each other)
Date: Thu, 1 Aug 2002 16:17:19 +0200
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Date: 2002-08-01T16:17:19+02:00
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Hello!

I've some problems programming graphs in ada.
I've declared two generic Units one called simple_node(describing the type
node) and one called simple arc(describing the type arc).
However I need to have type arc to instantiate type node (because of
adjacent lists) and I need to have type node to instantiate type arc (to
define which node the arc is pointing to). But when I want to use both
packages I have to instantiate one first needing the type of the second
generic unit.

Is there any possibility to describe a graph in such a way or do have to
work around keeping nodes and arcs in one generic unit?

Ciao,
Herwig