If you have 5.8.3 or later, it's more efficient to use keys %hash; in a void context rather than a scalar context if you only want to reset the iterator.

This avoids the need to calculate the number of keys in the hash, which for large and/or tied hashes can potentially be an expensive operation.

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail

In reply to Re: Re: Why Doesn't each() DWIM? by BrowserUk
in thread Why Doesn't each() DWIM? by enoch

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