[sciboy]

What would you consider uber-hardcore?

[arethuza]

Being able to give a list of weaknesses in something like git, a sensible discussions of the pro/cons of the approach taken by git, a comparison with the behaviors of other systems (with their pros and cons) and some idea for potentially improving it.

[JoachimSchipper]

With the ubiquity of DVCSes and Github etc, I don't think there is an uber-hardcore level in source control. "Has used git etc in a team setting" is the closest I can find.

[JulianMorrison]

Implementing git.

[JoachimSchipper]

That's well above the "O(log n)" level from the rest of the list. After all, "algorithms O(log n)" is not "you are Knuth".

[j_baker]

Being proficient with git. That's on an entirely different level than just knowing how to use it.