dart-lang/ton80 — pull request #22 by nippur72 (2014-09-01 18:38:28+00:00)
Title: Removed unnecessary check in Vector.subtract()

this check is not necessary, I think it's a leftover prior to manual optimization. E.g. the `add` operator does not have it.

Eliminating this check makes raytracer ~25% faster, pushing JavaScript close to `dart2js` performances in the benchmark.