[swift-evolution] Proposal: A standard library Fraction type

Matthew Johnson matthew at anandabits.com
Mon Dec 7 08:46:10 CST 2015

> Musical time signatures and note duration. Visual code with proportional relationships.

Time signatures cannot be properly modeled with a rational type you would expect to find in a numerics library.  3/4 is not the same as 6/8 in music!

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