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Interpret 'table' signature items more flexibly, automatically adding (Ur) constraints to support a kind of subtyping over (SQL) constraint sets
author Adam Chlipala <adam@chlipala.net>
date Mon, 04 Nov 2013 15:14:23 -0500
parents 395a5d450cc0
children
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fun main () =
  case #"A" of
      #"B" => return <xml/>
    | _ => return <xml>A!</xml>