Thanks for the quick help, Tim! On Sat, 1 Sep 2007 11:39:58 -0800, Tim Johnson wrote: > > On Saturday 01 September 2007, Kai Peters wrote: >> config-obj: attempt [ make object! load %my-app.cfg ] >> >> probe config-obj/setting1 >> >> The probe fails if there is no 'setting1 defined in %my-app.cfg >> >> Is there a way to test for this before attempting to probe (or doing= anything else with it) >> other than wrapping it in an 'attempt? >> > ;; How about 'in ? >>> o: context[t: 1] >>> in o 't > =3D=3D t >>> in o 'x > =3D=3D none >>> either in o 'x[print 'yes][print 'no] > no >>> get in o 't > =3D=3D 1 > > HTH > Tim
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