Mercurial > urweb
view tests/treeDyn.ur @ 1964:072656016dfa
Add another simple case for record unification between alpha-equivalent constructors
author | Adam Chlipala <adam@chlipala.net> |
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date | Wed, 29 Jan 2014 18:19:25 -0500 |
parents | aa2398e58306 |
children |
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table t : {Id : int, Parent : option int} fun recurse (root : option int) = queryX' (SELECT * FROM t WHERE {eqNullable' (SQL t.Parent) root}) (fn r => children <- recurse (Some r.T.Id); (*s <- source False;*) return <xml> <dyn signal={(*v <- signal s; if v then*) return <xml><b>HI</b>{children}<b>BYE</b></xml> (*else return <xml/>*)}/> </xml>) fun main () = x <- recurse None; return <xml><body>{x}</body></xml>