Hi all,

I have a data.txt list with informations about students. Each line with informations about:
name,id_number,faculty,exam day(in form of "yyyy/mm/dd"),address,...

I want to understand how the programm works.Who can tell me, how the hash in line 9 will be created and how it works with $hash{year}(line 13)?

Thanks for any answer
(and excues me for my worse English) 

1  #!/usr/bin/perl -w
2
3  my $filename = "data.txt" ;
4  my %hash=();
5
6  open(FILEHANDLE,"<$filename") || die "Cannot open   $filename!";
7  while(my $line=){
8  chomp $line;
9  $hash{$1}++ if ($line =~ /.*:(.{4})\/.{2}\/.{2}:.*$/);
10  }
11  close(FILEHANDLE);
12
13  print "In the Year 2002 you checked $hash{ 2002 } exams! \n";

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20040315 Edit by Corion: Added code tags

In reply to Beginner question hash&RegEx by Kafkas

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