[REBOL] Re: Searching objects
From: carl::cybercraft::co::nz at: 14-Dec-2001 0:46
On 13-Dec-01, Robert M. Muench wrote:
> Hi, I have the following problem:
> I'm handling objects, with several data-fields, in a series and now
> want to find an object with a specific value in a data-field. The
> problem is that 'find doesn't browse through the values.
> Any tip how I can search for values in data-fields of objects?
The following function might do the job for you, though I's sure there
must be a better way...
obj-find: func [series field value][
forall series [if series/1/:field = value [return index? series]]
s: reduce [
make object! [a: 10 b: "a"]
make object! [a: 20 b: "b"]
make object! [a: 30 b: "c"]
make object! [a: 40 b: "d"]
>> obj-find s 'a 20
>> obj-find s 'a 50
>> obj-find s 'b "d"