The cpp namespace

The special cpp/ namespace has two purposes, in jank.

1. To contain all special C++ forms like cpp/type, cpp/cast, cpp/&, etc.
2. To disambiguate between jank symbols and C++ symbols.

In most circumstances, you will only need to think about the first case. However, there are occassions where disambiguations are needed. For example, if you want to cast a value to int, you will need to use cpp/int, since int on its own will resolve to clojure.core/int. The way to reason about this is just that jank will try to resolve any symbol as a Clojure symbol first. Only when that fails does jank try to resolve it as a C++ symbol.