[REBOL] Re: Finding all objects derived from a specific object.
From: anton::wilddsl::net::au at: 1-Nov-2006 21:02
Glad to be of assistence.
Yes, blocks load more directly into rebol. By that I mean
it's easy to write just
which loads as a block!, rather than having to write
make list! 
all over the place.
So your code will be more concise and easier to read when
using blocks. Trust me, we all use blocks 99% of the time.
List!s and block!s have different time characterstics for
each supported operation (insert, remove, etc.).
I can't remember the details, because it's never been an issue
for me, however a quick search on google for:
list block insert remove "constant time" rebol
found me this page:
There have been discussions on this subject in the past, try
rebol.org mail list search some more, should yield more detail.
list! also behaves a bit differently than other series! with regard
to INSERT; Using INSERT moves the list series index to the end of the
inserted data. Which can be confusing, eg:
list: make list! ["b"]
insert list "a"
;== make list! ["b"] ; <-- what ?
;== make list! ["a" "b"] ; <-- oh, I see
list: head list ; <-- let's fix it permanently
Compare to block (and other series):
blk: copy ["b"]
insert blk "a"
;== ["a" "b"] ; <-- ok, series index is still at the head
There might be other differences as for INSERT. I don't know, I don't
use list at all.