For a description of the do operator, see perlop.

In the light of your reply, I'd probably do something along the lines of the following (in a script)... 

use warnings;
use strict;

my %vars;

while (<>) {
    local @_ = split;
    $vars{$_[0]} = $_[1];
}

[download]
which takes each line of each file given on the command line and updates the %vars hash, keyed on the first field & values of the 2nd field - as per postings here and elsewhere on this thread.

A user level that continues to overstate my experience :-))

In reply to Re^3: Speeding up perl script by Bloodnok
in thread Speeding up perl script by samuelalfred

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