* Izkata <[EMAIL PROTECTED]> [051001 09:24]:
>
> > In the same spirit as '=s, I'm trying the following
> > =u: func[v][either unset? v[""][v]]
> > ;; with the following results
> > >> =u v
> > ** Script Error: v has no value
> > ** Near: =u v
> > ;; so how may we intercept an unset value?
>
> I find it a bit annoying the way unset! works, but this is
> how to use it:
>
> >> u: func [v [any-type!]][either unset? get/any 'v [""][v]]
> >> u
> == ""
> >> u "hi"
> == "hi"
Wham!
Now I can do the following:
>> t: u repeat c "" collect[c]
== ""
Thanks Izzy!
> I avoid it, since it's a bit too easy to accidentally use v
> without checking it it's an unset! or not.
Not clear on what you mean, can you elaborate on what
the "gotcha" might be?
cheers
tim
--
Tim Johnson <[EMAIL PROTECTED]>
http://www.alaska-internet-solutions.com
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