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This struck home with me when one day a friend and I bought the same thing and he paid a penny more.

I realized something I didn't ever notice or appreciate in 20+ years: oh yeah, they can't just round off the penny in their favour every time. And the code that handles tracking when to charge someone an extra penny must be irritating to have developed and manage. All of a sudden you've got state.






What kind of thing and store was it?



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