[kibwen]

Asking someone you know is not an approach that scales in the large, and suggesting that all answers can be divined from source both assumes a level of mastery that cannot be expected (e.g. the difficulty of reading the source of C++'s Boost library vs. reaching for the extensive documentation) and denies the existence of questions such as "when is it appropriate to use this operator?" or "what is the worst-case runtime complexity of this operation?"