BrowserUk suggests that Tie::SubstrHash be used as a potential solution...

I recommend that this solution not be considered. tie()'d objects have overhead. In the cheapest case, we would be replacing a small basic hash with less than 4 entries with a tied hash, and an attached blessed string reference. No gain would be realized, and performance would suffer.

In reply to Re: Re: A memory efficient hash, trading off speed - does it already exist? by MarkM
in thread A memory efficient hash, trading off speed - does it already exist? by JPaul

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