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pretty small subtotal. (programming.dev)

submitted 1 week ago by [email protected] to c/[email protected]

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[-] [email protected] 3 points 1 week ago

Yes you can. You're vastly underestimating the size of an f64. Give me a concrete example of a money operation that fails with f64 (for normal companies; assuming you aren't a stock exchange or Visa or whatever).

0.1f64 + 0.2f64 != 0.3f64

Why not?

Encoding in assumptions about a fixed amount of supported currencies in a system is broadly speaking not a good idea

[-] [email protected] 0 points 1 week ago

0.1f64 + 0.2f64 != 0.3f64

It does if you round it to the nearest penny.

Encoding in assumptions about a fixed amount of supported currencies in a system is broadly speaking not a good idea

Most sensible programming languages allow enums to be non-exhaustive.

this post was submitted on 26 Jul 2025

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