kivy/kivy — pull request #627 by aspidites (2012-08-08 21:50:48+00:00)
Title: Speed optimizations and Refactoring

intersection:
- this version is faster
difference:
- this version is faster
- your version only shows which items of the first list are missing from the second; mine optionally shows both; defaults to old behavior, though
is_color_transparent:
- this version is faster
- the code is greatly simplified

Benchmarks [here](https://gist.github.com/3299103)