The first sorted array crashes out because the data isnt split, but does return the first 0-9 elements of the array ( top 10 )...
the second sort works perfectly, but now i cant extract the first elements without an error, Please would you be so kind as to tell me where i am going wrong... 

#### Old sort (that doesnt work properly ) with first 10 records extra
+cted


foreach my $k (keys %IND) {
    
        @indsort=(sort { $a <=> $b } @{$tmp});
          foreach $line(@indsort[0..9]){
          print "$line\n";
        }
}

[download]
So to my delight i fixed the sort on the array, but now the extraction of n elements isnt working, please see below:

#### New sort (which works!) with first 10 records NOT extracted


foreach my $tmp (keys %IND) {
    my @lines;

open(FILE, "+< tmp/$tmp.dat") or die "file:$tmp $!";
        while (<FILE>) {
        chomp;
         my @line = split(',');
        push(@lines, \@line);
        }


        @lines = sort { $a->[0] <=> $b->[0]} @lines;
        
        foreach my $line (@lines) {
         print join(",", @{$line}) . "\n";
        }        
}

[download]
gives the error:

Use of uninitialized value in array dereference...
in this line:
     print join(",", @{$line}) . "\n";

[download]

In reply to first elements in array, split join and sort problem by alexiskb

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