[REBOL] Associative data store Re:(4)
From: ryanc:iesco-dms at: 14-Sep-2000 16:57
FYI: Not quite there, but using the one I just posted allows you to do this:
>> assoc/set 'the "dog"
== [the ["dog"]]
>> assoc/get 'the
== "dog"
>> assoc/list/the
== ["dog"]
>>
[rebol--keithdevens--com] wrote:
> I really like the path idea. Is there any way to emulate an associative
> array without having to make a special object type?
>
> Very unfortunately, Rebol doesn't let you just do things like:
> assoc/key: "value"
>
> (if assoc/key doesn't actually exist yet)
>
> is there any way to cheat and do something like:
>
> (fake example that doesn't work)
>
> assoc: make hash! []
> change assoc/key "dude"
>
> --------------------------------------------------------------------
> It would be really really nice if RT could give us something like this (hint
> hint):
>
> assoc: make associative! []
> assoc/key: "value"
>
> 'first could give us the keys
> and 'second could give us the values
>
> Bonus is, it doesn't require any new syntax... no funky assoc{'key'} or
> anything. :)
>
> Keith
>
> ----- Original Message -----
> From: <[rebol--techscribe--com]>
> To: <[list--rebol--com]>
> Sent: Thursday, September 14, 2000 5:57 PM
> Subject: [REBOL] Associative data store Re:(2)
>
> > Oh, shucks,
> >
> > a bug:
> >
> > >assoc-add: func [assoc [block!] candidates [block!] /local found] [
> > > if is-assoc? assoc [
> > > foreach [key value] candidates [
> > > either found: contains-key? assoc key [
> > > insert at assoc/values index? found value
> >
> > The line
> >
> > > insert at assoc/values index? found value
> >
> > Should be
> >
> > change at assoc/values index? found value
> >
> > > ][
> > > insert assoc/keys key
> > > insert assoc/values value
> > > ]
> > > ]
> > > return true
> > > ]
> > > return false
> > >]
> >
> > To quote Joel, "silly me" :-).
> >
> >
> >
> > ;- Elan [ : - ) ]
> > author of REBOL: THE OFFICIAL GUIDE
> > REBOL Press: The Official Source for REBOL Books
> > http://www.REBOLpress.com
> > visit me at http://www.TechScribe.com
> >
--
Ryan Cole
Programmer Analyst
www.iesco-dms.com
707-468-5400
The problem of language here are really serious.
We wish to speak in some way about the structure
of the atoms . . . But we cannot speak about atoms
in ordinary language. -W. Heisenberg
