[REBOL] Re: Newcomer difficulties with Rebol
From: gchillemi::aliceposta::it at: 17-Dec-2007 11:48
> > a: "12345"
> >
> > probe index? find a => 3
> >
> > probe copy/part a 3 => "123"
> >
> > probe copy/part a find a "3" => "12"
> >
> > I expected 3 being the return value of -find a "3"- as it
> is the index
> > of the series returned by the fuction find but Rebol works
> differently
> > considering it the "end position"
> >
>
> yes, maybe a bit confusing, but handy behavior. We are
[...]
Petr, don't forget many of us are coming from other languages where the
standard working is "the return value from a function is the argument of
another". When I think the return value of "find" is 3 and it goes as
argument to copy/part I suppose it would be the same of writing 3 by hand
copy 3 chars from the position A is pointing to. Instead Rebol is different
and interprets it as the ending position. I would have written this into the
manual in VERY LARGE BLINKING FONT as I have read it at least 5 times
without noticing this working.
> I think that Core documentation tried to explain series
> concept nicely.
> What I would probably do is to create some gotchas category,
> describing exactly those small details, which might take you
> tens of minutest to debug ...
It is the reason I have written this message. As mediocre Rebol Programmer I
could give a point of view on the documentation that the Pro Rebol coders
don't have.
Giuseppe Chillemi
