[REBOL] Newcomer difficulties with Rebol
From: gchillemi:aliceposta:it at: 17-Dec-2007 6:55
As Newcomer I have faced many difficulties with Rebol due different working
in varius situation or different expectations. You must read a lot before
understanding this or that different behavior
The first time I faced a conceptual problem has been in Forall and Forskip.
They both returned the series at its tail. I expected to have the series at
its starting point when forall and forskip have been started.
The second different working is between using numerals or path values on
series: a: "12345" -> probe a/5 returns 5, a/22 returns none, seventh a
returns "Out of range or past end", I expected a -none- value too.
The third is a very big difference between what I expect and what I get. I
am talking about copy/part.
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"
The fourth learning difficulty arised on string inside objects and functions
they are static and global. I must use COPY to have another issue of the
string. Instead I would expect to have it initialized each I declare a:
mystring
. For the same reason I must use COPY/DEEP to copy sub-blocks
inside block of data.
Giuseppe Chillemi
