I'm not clear about what you want next or last to do there, but I think you can simplify your key search like this: 

my @act_vars = grep {exists $mapped_vars{$_}} @arr_vars;

[download]
Looks like blazar++ read the question better.

After Compline,
Zaxo

In reply to Re: How to use 'last' / 'next' commands to exit loop? by Zaxo
in thread How to use 'last' / 'next' commands to exit loop? by sara2005

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