[ALLY] Datatype numbering and the Missing Datatypes Re:(3)
From: larry:ecotope at: 21-Sep-2000 21:49
Hi Carl
Well, symbol! is not unset in the current builds, although context! is.
>> type? symbol!
== datatype!
>> a: make symbol! "abc"
>> type? a
== symbol!
>> b: [a]
== [a]
>> b: reduce b
== []
>> length? b
== 1
>> type? first b
== symbol!
>> mold first b
== ""
>> to-word first b
== abc
I have puzzled over both of these for some time. And Eric Long told me he
stumbled on symbol! way back last fall. My guess about context! would be
that it is the datatype associated with some kind of environment frame
containing binding info for local variables (in other words, a symbol
table). But I really don't know. How about a hint?
BTW How about the numbers which appear as the second of an op! or action!.
>> type? :+
== op!
>> second :+
== 1
But a native! seems to have a second of none.
Cheers
-Larry
