Dogfood
Calculates the expected weight of a can at the end of the day, if you (or your dog) are eating a fraction of a can each day.
What?
For example, let's say you eat 2/3rds of a 400g can each day:
$ cargo build --release --quiet
$ ./target/release/dogfood 2 3
Starting with a full can...
End of day 1: 1/3 left over, 185g
End of day 2: 2/3 left over, 319g
End of day 3: 0 left over, Empty
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Bonus
As a picture:
$ ./target/release/dogfood 2 3 --svg two_thirds.svg
$ open -a Firefox two_thirds.svg
Like this:
Just gorgeous