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From: tmoran@acm.org
Newsgroups: comp.lang.ada,comp.lang.c,comp.lang.c++,comp.lang.java
Subject: Re: No call for Ada (was Re: Announcing new scripting/prototyping
 language)
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Xref: archiver1.google.com comp.lang.ada:5325 comp.lang.c:21025
 comp.lang.c++:18059 comp.lang.java:2758
Date: 2004-02-07T23:19:15+00:00
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>4. If B is a subtype of A, is list/array/vector/set/etc. of Bs a
>   subtype of list/array/vector/set/etc of As? (covariance)
  What do you mean by a "set" being a "subtype" of another "set"?