Mercurial > urweb

view tests/treeDyn.ur @ 1466:e2d7bd41f527

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Remember to remove explicit table projections in SQLite UPDATE SET values
author Adam Chlipala <adam@chlipala.net>
date Mon, 30 May 2011 07:48:08 -0400
parents aa2398e58306
children
line wrap: on
line source
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>