github/swift-style-guide — pull request #20 by jeremytregunna (2014-11-25 16:48:52+00:00)
Title: Tweaking spacing rule, please discuss

What's far more important than enforcing one spacing rule over another (tabs or spaces) is that the whole file is consistent in its spacing, not that one religiously enforces a particular variety.

This is my explanation and rationale. Code samples should be self-explanitory and wouldn't add anything at all.