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[Caml-list] Variance constraint
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Date: 2001-03-20 (12:52)
From: Nicolas barnier <barnier@r...>
Subject: [Caml-list] Variance constraint
I found the doc quite elusive on the subtle + and - notations
for variance and contravariance constraints of abstract types.
Can someone points out a good reference with examples that
adresses this issue ? Maybe Jacques Garrigue ?

-- Nicolas
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