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Protect uw_Basis_new_client_source from invalid ctx->id We assume that FFI code may create new contextes with id left unassigned
author Sergey Mironov <grrwlf@gmail.com>
date Wed, 26 Feb 2014 09:43:47 +0000
parents 9da62680adc5
children
line wrap: on
line source
datatype list t = Nil | Cons of t * list t

table t : {A : int}

fun main () : transaction page =
    let
        fun rows () =
            query (SELECT * FROM t)
            (fn r ls => return (Cons (r.T.A, ls)))
            Nil

        fun show ls =
            case ls of
                Nil => <xml/>
              | Cons (x, ls') => <xml>{[x]}<br/>{show ls'}</xml>
    in
        s <- source Nil;
        return <xml><body>
          <button value="Get It On!"
                  onclick={ls <- rows ();
                           set s ls}/><br/>
          <br/>
          Current: <dyn signal={ls <- signal s; return (show ls)}/>
        </body></xml>
    end