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Re: Explanation of mapping and undef

by broquaint (Abbot)
on Jun 08, 2004 at 11:09 UTC ( #362277=note: print w/replies, xml ) Need Help??


in reply to Explanation of mapping and undef

next if exists { map {$_ => undef } qw(city state country) } -> { $field };
This is creating a temporary anonymous hash where the keys are the values in the qw// and then checking for the existence of $field in that hash. For a breakdown of a similar usage of temporary anonymous hashes see. Re: Re: Re: Unique values in array.
HTH

_________
broquaint

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