Grabbed coffee at Taylor St. Baristas. In admiration of their loyalty card hack. Give a 2-stamp card and it's swapped for a 3-stamp card.
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Replying to @sebinsua
It's like they realised incrementing stamps is slow and not functionally different from swapping with a pre-incremented cache of cards.
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It's fascinating to see optimisation in the wild, outside from the technology industry.
7:19 AM - 17 Mar 2017
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