Here's some stuff where it would bite me in my work: - I sometimes use random 64 bit integers in my data (usually as cheaper synthetic guid-like keys). - I so

Here's some stuff where it would bite me in my work: - I sometimes use random 64 bit integers in my data (usually as cheaper synthetic guid-like keys). - I sometimes use CRC-64 hashes. - I sometimes use 2^63 as a sentinel.