[hinkley]

That was more of a "it's not universal" comment. Sometimes the right solution is self obvious, other times it needs PR.

If I write a piece of code so others don't have to, then it's a service I'm providing. If they don't 'get' the code then the problem is not always with them. It's important to watch for patterns in the questions or complaints you get. There are often multiple acceptable ways to solve the same problem and everything goes smoother if the one you use doesn't trip people up.

In this case I pointed him to some documentation on filter and map.