The empty interval problem applies to integers too: [15,15) and (15,15] are empt... | Hacker News

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		HelloNurse on Nov 22, 2022 \| parent \| context \| favorite \| on: Always use [closed, open) intervals The empty interval problem applies to integers too: [15,15) and (15,15] are empty, [x,y] is not for any x and y.

nh23423fefe on Nov 22, 2022 [–]

for any x>y [x,y] is empty, i.e. [15,14]

an interval is a set and sets can be empty [x,y) = { z where x<=z and z<y }

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