From: Juergen Pfitzenmaier <pfitzen@informatik.uni-tuebingen.de>
To: undisclosed-recipients:;
Subject: [Caml-list] co/contra-variance and class ?
Date: Fri, 27 Apr 2001 20:51:53 +0200 (MET DST) [thread overview]
Message-ID: <200104271851.UAA03530@sunglasses.informatik.uni-tuebingen.de> (raw)
It is nice to see the introduction of explicit co/contra-variance
into ocaml. I just read the manual and didn't try some code, but
my understanding is that the variance stuff is only for type definitions
and not for classes. Why is this so ? Variance can be a mighty
tool in dealing with class hierarchies.
pfitzen
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next reply other threads:[~2001-04-27 18:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-27 18:51 Juergen Pfitzenmaier [this message]
2001-04-29 10:24 ` Jacques Garrigue
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