"The grepping is slowing you down unnecessarily"

By the way, it's also plain weird. If you want to check for the existence of hash keys, then there's the exists keyword:

if (exists $count{$ipb} and exists $count{$ipb}{$ipa})

[download]
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re^2: How to merge data in IP address pairs by tobyink
in thread How to merge data in IP address pairs by -=Markus=-

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