Rats - read it backwards :-(

Well - I just ran your code here (on linux), adding "use strict", and adding "my" as appropriate, and it ran correctly (or at least I don't have any empty lines anywhere).

Ah - I know what the problem is: 

foreach $network_if (@tcp_utilization_metrics) {
    local $if_name = $network_if;
    if ($network_if =~ /en/) {
        $network_if =~ substr ($network_if, 2, 0, "t");
    }

[download]
When change the $network_if value here you actually modify the @tcp_utilization_metrics array - see the docs on the behavior of the foreach loop.

If you reverse things you should be fine: 

foreach $if_name (@tcp_utilization_metrics) {
    local $network_if = $if_name;
    if ($network_if =~ /en/) {
        $network_if =~ substr ($network_if, 2, 0, "t");
    }

[download]
That said - you should "use strict" and replace those "local" with "my".

Michael

In reply to Re: Re: Re: Simple hash assignment...or is it? by mpeppler
in thread Simple hash assignment...or is it? by arootbeer

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