> How do you get all values in say in 0..9.9999 when using 0 <= x <= 9... it mak... | Hacker News

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		lifthrasiir on Jan 20, 2021 \| parent \| context \| favorite \| on: Again on 0-based vs. 1-based indexing > How do you get all values in say in 0..9.9999 when using 0 <= x <= 9... it makes sense to use 0 <= x < 10... This breaks down for negatives, though. -9.9999..0 would be -10 < x <= 0.

mjevans on Jan 20, 2021 [–]

It's just fine for negatives. If you slide the range that 'makes sense' back by 10 (add -10 to it):

-10 <= x < 0

This excludes the end of the range, it includes the start of the range. What's changed is that the start of the range is no longer at zero and also has crossed from positive to negative.

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