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Proper subsignaturing for sub-structures
author Adam Chlipala <adamc@hcoop.net>
date Thu, 26 Jun 2008 09:09:30 -0400
parents fd8a81ecd598
children
rev   line source
adamc@58 1 signature S = sig
adamc@58 2 type t
adamc@58 3 val x : t
adamc@58 4 end
adamc@58 5
adamc@58 6 signature S' = sig
adamc@58 7 include S
adamc@58 8 val y : t
adamc@58 9 end
adamc@58 10
adamc@58 11 signature S'' = sig
adamc@58 12 type u
adamc@58 13 include S' where type t = int
adamc@58 14 type v
adamc@58 15 end