The real difference comes when you pass the hash to a sub. Then, large hashes are serialized as lists, while references are just a single scalar.

I'm not willing to guess what the performance of a simple lookup is. But, both of them have the hash the key which might be the dominant part of the process.

Phil

In reply to Re: Hash references versus hashes: is there a performance hit? by philcrow
in thread Hash references versus hashes: is there a performance hit? by vrk

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