[REBOL] Re: Searching objects
From: robert:muench:robertmuench at: 13-Dec-2001 18:09
> -----Original Message-----
> From: [rebol-bounce--rebol--com] [mailto:[rebol-bounce--rebol--com]]On Behalf Of
> Joel Neely
> Sent: Thursday, December 13, 2001 2:16 PM
> To: [rebol-list--rebol--com]
> Subject: [REBOL] Re: Searching objects
> I'm sure someone can polish this, but how about setting up the
> objects explicitly to be searchable on whatever criteria you
> have in mind? Quick-and-dirty sample follows:
Hi, nice idea to make it generic on each data-field :-)).
> phones-by-name: func [name [string!]] [
> foreach chum blackbook [
> if find chum/get-searchable-fields name [
> return chum/phones
> ]
> ]
> return copy []
> ]
This solution uses a loop too. If possible I would like to avoid looing through
the objects.
I had something like using indices in mind. With this I would have something
like this:
myobjects: make hash! [] ; using index,object pairs
= [1 obj1 2 obj2]
myobjects_names: make hash! [] ; using data-field, index pairs
= ["robert" 1 "carl" 2 "joachim" 3]
Searching the object with a name joachim would result in object ID 3, than
makeing a lookup in the objects and get the object with ID 3. I hope you know
what I mean.
With this you will have an index for each data-field you want to search for.
Remembers me on the good old databases ;-)) Robert
