[REBOL] Re: How to remove the last item of a serie ?
From: riusa:email:it at: 7-May-2002 9:42
what you say is one of many other useful information found in this
mailing-list. Why nobody writes a technical book (HTML?) about these
advanced information?! If Rebol has these great features, but nobody
will list and explain them, these features will be lost!
If I project a new car, with many enhancements, many features, in order
to better sell my new "creature", I must publicize these features! Air
bags, ABS, etc...
> Hi Jason,
> On Sunday, May 05, 2002, 9:30:04 PM, you wrote:
> JC> cool.. So why can't I also use a similar syntax to do
> >>> remove tail test -2
> remove skip tail test -2
> JC> Can you elaborate on that a little please.
> Most scripting languages are rather slow even if they can be
> compiled. Java is rather slow even with the JIT compiler. Why?
> Because there's a lot of implicit copying of data.
> I ask you, what happens when you write:
> $s .= "append";
> in PHP? What happens when you do assignments in a lot of
> languages? I'll tell you: a lot of data are being copied around.
> Without you even realizing, and worse, without you being able to
> do anything with it.
> REBOL is very different here. Data is not usually copied
> implicitly; i.e. something like:
> a: b
> is always O(1) whatever datatype B is. (The only "implicit"
> copying occurring in REBOL is during reallocation, when you grow a
> series out of its limits. Even in this case, anyway, you are able
> to avoid it, by preallocating the right amount of memory for your
> This means that in REBOL you are really able to control the
> complexity of your algorithms, if you are willing to. Most other
> scripting languages I know are doing too much things behind the
> scenes to make this easy/feasible.
> I really think simplicity has too much advantages. :-)
> Gabriele Santilli <[g--santilli--tiscalinet--it]> -- REBOL Programmer
> Amigan -- AGI L'Aquila -- REB: http://web.tiscali.it/rebol/index.r
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