I'm a baby monk only... ;)

Have to admit I have never seen @_ used for anything else than for function arguments, and I don't exactly understand push @data, [@_]; Using @_ seems nice and intuitive, applying it to my example gives me:

use strict;
my $output = <<EOD;
4865FA9B   0702 P H rmt0           TAPE OPERATION ERROR
DE9A52D1   0704 I S rmt0           DEVICE DUMP RETRIEVED
4865FA9B   0701 P H rmt2           TAPE OPERATION ERROR
F3E9B3E2   0620 I O SYSJ2          UNABLE TO ALLOCATE SPACE IN FILE SY
+STEM
DCB47997   0511 T H hdisk4         DISK OPERATION ERROR
EOD

my (@data, %identifier);
for my $line (split /\n/,$output) {
    @_ = split /\s+/, $line, 6;
    push @data, [@_];
    $identifier{$_[0]} = $data[-1]; # Index for first field
}

# Sort on multiple fields, in this case 4th (class) and 2nd (time)...
print "\@data:\n";
for my $rec (reverse sort {$a->[3] cmp $b->[3] || $a->[1] <=> $b->[1]}
+ @data) {
   print "Error ID: $rec->[0]   Time: $rec->[1]\n";
}

[download]

Also, if i understand you right, %identifier contains a hash of array references which I can use to access @data elements e.g.

print "key $_ value: $identifier{$_}->[0]\n" for (keys %identifier);

Thanks for the help!

Niel

In reply to Re^2: Hash keys affect sorting by 0xbeef
in thread Hash keys affect sorting by 0xbeef

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