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Postings from February 2009
On Tuesday 24 February 2009 08:35:14 Aristotle Pagaltzis wrote:
> * Nicholas Clark <nick@ccl4.org> [2009-02-19 15:20]:
> > If we're going to deprecate something, we need to stop using it
> > in the core. Which would mean that we need an alternative in
> > the core.
> >
> > Which would mean a bikeshed argument about what next.
>
> I think there’s fairly good consensus in favour of either
> File::Next or File::Find::Object.
>
> Note that it’s easy to cast a callback API as a wrapper around an
> iterator API, but without continuations, it’s not possible to do
> the opposite. It should be possible to merge File::Find’s test
> suite into the prospective newcomer’s and then leave behind a
> thin wrapper that implements the File::Find API which can then
> stay around forever, if we so wish.
>
The problem with implementing File::Find using, say, File::Find::Object is
that F-F-O does not include some features of File::Find that Nanardon and I
found to be bad ideas. In particular, File::Find's *default*
"no_chdir => 0" (which I always turned into "no_chdir => 1" when I used
File::Find), which chdir's to each traversed directory as it is being
traversed (ewwww!) - is not implemented in File-Find-Object.
From what I read in File::Next's documentation - it does not support the
"yes_chdir" option either.
Another problem is that there may be some speed considerations as, at the
moment, File-Find-Object is considerably slower than File::Find, at least
according to my benchmark.
> (This argument hangs off the fact that a filesystem walking
> module is needed by the Perl code in the core. Otherwise I’d
> just say to deprecate File::Find.)
>
My suggestion was to add some text about File::Find's limitations to its POD,
and its available alternatives, without introducing a warn statement in the
Perl code. I don't mind writing a patch if there's a general consensus that it
should be written.
Regards,
Shlomi Fish
--
-----------------------------------------------------------------
Shlomi Fish http://www.shlomifish.org/
"Humanity" - Parody of Modern Life - http://xrl.us/bkeut
<mauke> I'm not interested in what you're doing; what are you trying to
achieve?
<PerlJam> mauke: I'm trying to achieve world peace and this regex is
the last thing standing in my way! ;)
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