Hello there,


I'm surprised no-one else has mentioned this but you should probably check out Tie::File. (Maybe it has been mentioned and I didn't notice.... But anyway).


...lifted straight from the module docs...

# This file documents Tie::File version 0.96
use Tie::File;

tie @array, 'Tie::File', filename or die ...;
$array[13] = 'blah';     # line 13 of the file is now 'blah'
print $array[42];        # display line 42 of the file

$n_recs = @array;        # how many records are in the file?
$#array -= 2;            # chop two records off the end


for (@array) {
     s/PERL/Perl/g;         # Replace PERL with Perl everywhere in the
+ file
     }

# These are just like regular push, pop, unshift, shift, and splice
# Except that they modify the file in the way you would expect
push @array, new recs...;
my $r1 = pop @array;
unshift @array, new recs...;
my $r2 = shift @array;
@old_recs = splice @array, 3, 7, new recs...;

untie @array;            # all finished

[download]

Cheers
SM

In reply to Re: Iterating through HUGE FILES by smullis
in thread Iterating through HUGE FILES by jmaya

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