Re: improving the :join command
- On Mon, 14 Sep 2009, Christian Brabandt wrote:
>IMO it is not a bug but that it does not scale up. Just like compute
> Hi Tony!
> On Mi, 09 Sep 2009, Tony Mechelynck wrote:
> > tens of seconds); if you want to join a gigabazillion lines into
> > one, Vim can do it -- but expect it to take hours or even days
> > rather than seconds, and at, oh, let's say 99.5% CPU time. It's not
> > even a hang -- it's just that you gave it an enormous task to which
> > it is ill-suited, and it's uncompainingly and patiently grinding at
> > it; when it's finished, it will wait for the next command -- if by
> > then you haven't lost patience and interruped it or killed it. To
> Tony, please read the documentation provided with the plugin or at the
> plugin page and try out the test case I have been given. And then tell
> me again, that this does not sound like a bug.
> Just the fact, that it is possible to improve the join command using vim
> scripting language gives strong evidence, that it is a bug indeed.
1+1+1+1 as ((1+1)+1)+1
that each operation (+) is independent of other (+) so that it needs a
quadratic time to do the calculation. It would be a trade off between
time and space, IMO to allocate 50% more space than what is needed
so that some of these (:join) can be done in-place should improve
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