The below script ignores two fields called 'Name' and 'Phone'. But I dont understand how it is working. I know 'map' executes a code block but need more assistance on what is inside this map block. Can someone please explain it? 
 next if exists
   { map {$_ => undef } qw(Name Phone) } -> { $field };

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In reply to Interpretation of a line needed. by Anonymous Monk

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