for my $p9 ({grep($is_available{$_}} keys %is_available)) {
  ...

[download]
But, personally, I prefer: 
for my $p9 (keys %is_available) {
  next unless $is_available{$p9};
  ...

[download]
I find it more readable, and it should be more efficient as well, as you don't create another array.

In reply to Re: Foreach syntax by pjotrik
in thread Foreach syntax by JimSki

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