Am Dienstag, 10. Mai 2005 13.54 schrieb Randal L. Schwartz:
> >>>>> "John" == John Doe <[EMAIL PROTECTED]> writes:
>
> John> Something like (untested):
>
> John> # build hashes with pairs (filename=>0)
> John> #
> John> my %first=map {$_=>1} find (sub {}, $dir1);
> John> my %second=map {$_=>1} find (sub {}, $dir2);
>
> Good thing that "untested" is in there, because find() doesn't return
> *anything* at all. At least, nothing useful. The wanted() routine
> is where all the action must take place.
Thanks a lot for the correction, shame on me :-(
And: Sorry "arkster" for misleading you.
> Or, you could do almost what you've written using my File::Finder:
>
> my %files;
> for my $dir ($dir1, $dir2) {
> $files{$dir} = {map { $_ => 1 } File::Finder->type('f')->in($dir)};
> }
> Or, you could get even trickier, save the next step, and build a
> single hash:
>
> my %files;
> for my $index (0..1) {
> $files{$_} .= $index
> for File::Finder->type('f')->in(($dir1, $dir2)[$index]);
> }
>
> while (my($file, $where) = each %files) {
> print "$file only in $dir1\n" if $where eq "0";
> print "$file only in $dir2\n" if $where eq "1";
> print "$file in both\n" if $where eq "01";
> }
This is very nice :-)
>
> This can easily be extended to multiple directories.
>
> --
> Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
> <[email protected]> <URL:http://www.stonehenge.com/merlyn/>
> Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
> See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl
> training!
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