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module Puppet::Util::CollectionMerger
def ar_hash_merge(db_hash, mem_hash, args)
(db_hash.keys | mem_hash.keys).each do |key|
if (db_hash[key] && mem_hash[key])
# in both, update value
args[:modify].call(db_hash[key], mem_hash[key])
elsif (db_hash[key])
# in db, not memory, delete from database
args[:delete].call(db_hash[key])
else
# in mem, not in db, insert into the database
args[:create].call(key, mem_hash[key])
end
end
end
end
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