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Comment by 3dfan | Hacker News Reader

    your first example would be a parse error about undeclared users-churn-rate

What if users is 10 and churn-rate is 3 and i want to substract the churn-rate from users?

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You can either use U+2212 MINUS SIGN instead of a hyphen, too. Spaces would probably be preferable from a maintenance point of view, though.

Just use white space! (EDIT: Sorry, I hadn't refreshed for a while, and so didn't see that zoffix (https://news.ycombinator.com/item?id=10795739) beat me to the punch by quite a bit.)

Use the space, Luke ;)

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