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Subject: why Hashtbl.t are not covarint?
From: Radzevich Belevich <radzevich.belevich@gmail.com>
To: Caml List <caml-list@inria.fr>
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Date: Wed, 14 Jan 2009 11:02:25 +0300
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X-Spam: no; 0.00; hashtbl:01 hashtbl:01 mli:01 type:14 type:14 why:24 why:24 com:74 are:33 not:47 not:47 gmail:48 

hashtbl.mli: type ('a,'b) t
Why not "type ('a,+'b) t"?