Ave fellow monks,

From the frightening depths of ignorance I come for thee again, to ask for thy infinite wisdom.

I have the following construction (extract):

  opendir(DIR, "$dirstr") || die ("[error] proc [...]");
  rewinddir (DIR);
  @piclist = grep(!/^\.\.?$/ && /.jpg$/, readdir (DIR));
  closedir (DIR);
    
  $index = grep $piclist[$_] eq $pic, 0 .. $#piclist;

  print "$index\n";
  print "$piclist[$index] equals $pic\n";

[download]

It opens a directory, searches for a certain file in the list, and returns the index of that file (so I can link to previous and next picture in a gallery). The problem is that index is always '1', and the second print-out says 'SininenLaguuni.jpg equals KeltaisenKesanBooli.jpg', which is clearly not the case.

If I do the index-searching like this:

  my ($c);
  foreach $c (0 .. $#piclist) {
    print "$c - $piclist[$c] equals $pic\n" if ($piclist[$c] eq $pic);
  }

[download]

... it seems to work: '9 - KeltaisenKesanBooli.jpg equals KeltaisenKesanBooli.jpg'.

What I don't understand is why the first solution doesn't and the second one does work. These are all list operations on lists, as far as I see.

Enlighten me, please... I'm sure it's something very stupid I'm too tired to see.


thanks,

   wouter

In reply to not a list? by december

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