[ALLY] Datatype numbering and the Missing Datatypes Re:(2)
From: allenk:powerup:au at: 22-Sep-2000 1:10
----- Original Message -----
From: <[jeff--rebol--com]>
To: <[ally--rebol--com]>
Sent: Thursday, September 21, 2000 11:44 PM
Subject: [ALLY] Datatype numbering and the Missing Datatypes Re:
>
> G'day, Allen:
>
> > Hi Ally,
> >
> > Found this while I was writing a view function browser
> > script.
> >
> > If you do source unset? you will see it is numbered 1
> > unset?: native ["Returns TRUE for unset values." value
> > [any-type!] 1]
> >
> > and source? list shows it is numbered 53. list?: native
> > ["Returns TRUE for list values." value [any-type!] 53]
> >
> > This made me curious so I listed out all of datatypes and
> > found 51 of them, the missing numbers are 4 and 21. Anyone
> > know what they are?
>
> Welp, it's not much of a secret that the datatypes in REBOL
> have these curious little corresponding numbers associated
> with them.
>
> The two missing types that you notice are not represented
> directly in REBOL but are used internally. These types
> don't have the full semantics of the rest of the "userland"
> datatypes. (context! and symbol! respectively).
>
> Pay no attention to the little datatypes behind the curtain!
> :-)
>
> -jeff
>
Thanks Jeff. I just had to find the missing pieces, bit like the person who
has to know which card is missing from a deck, I know there is no point but
I still do it ;-)
I'd really like to see a cardinal datatype so 1st 2st 3rd, 3m 3ltr 3km 10lb
etc can be used as words, would make block parsing dialects easier when
doing weights and measures.
I guess I should shoot that off to feedback.
Cheers,
Allen K
