view tests/treeDyn.ur @ 1893:9a1097954188

compileC: Link libraries in the right order This is needed, at least on recent Ubuntu, to fix this linker error when compiling any Ur/Web application: ld: /tmp/webapp.o: undefined reference to symbol 'uw_write' Signed-off-by: Anders Kaseorg <andersk@mit.edu> --- src/compiler.sml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
author Anders Kaseorg <andersk@mit.edu>
date Thu, 21 Nov 2013 14:32:11 -0500
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>