[REBOL] Re: Ladislav: Interpreter Essay
From: robbo1mark:aol at: 16-Oct-2001 12:31
Ladislav,
sorry about the confusion, I your new essay you said that DO returns the last value in
a block! as the result.
But you can never get UNSET returned as the result of
an expression ie
== unset
sure you can get
== [unset]
or
== unset!
but these are block! and datatype! values.
When DO encounters the UNSET value which has the UNSET! datatype it EXITS to the system
console prompt.
ie
>> do reduce [print 1]
1
>>
We don't get
>> do reduce [print 1]
1
== unset
That's all I was trying to say. That in these instances
for all intents and purposes there is NO "Result".
That's all, just trying to make your essay more precise.
Sorry if I've wasted yor time, Iam sure we both know the
pitfalls of UNSET all too well.
cheers,
Mark
In a message dated Tue, 16 Oct 2001 12:08:03 PM Eastern Daylight Time, "Ladislav Mecir"
<[lmecir--mbox--vol--cz]> writes:
