Also, I can't really believe that this I/O bound procedure would in any way be impacted by the number of nanoseconds required to manipulate the dates.

Never underestimate the impact of a large number of subroutine calls.

Given the OP's followup, it seems there's a lot going on in the original code.

-QM
--
Quantum Mechanics: The dreams stuff is made of

In reply to Re^2: search through hash for date in a range by QM
in thread search through hash for date in a range by bfdi533

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