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find an entry in hash array

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From:
Sharan Basappa
Date:
March 20, 2008 07:50
Subject:
find an entry in hash array
Is there a way to find out if an entry exists in a hash array?
e.g. I have a hash array and another normal array. I would like loop
though regular array and see if the entries defined in this array exist
in hash array.

Regards
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