[REBOL] Re: Object/Path? question
From: tim-johnsons::web::com at: 1-Sep-2007 11:39
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
== t
>> in o 'x
== none
>> either in o 'x[print 'yes][print 'no]
no
>> get in o 't
== 1
HTH
Tim
