when using a foreach loop $_ contains the value on which you are looping. It is a shortcut so you don't actually need to say: 
foreach my $app (@apps){
  #stuff with $app
}

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and use more space with another variable in your program as minimal as that may seem when $_ or $app contains a value like '1'

In reply to Re: for, foreach and $_... by bear0053
in thread for, foreach and $_... by Foggy Bottoms

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