We use `m_` at work and I've come to really appreciate it. It makes reading code very easy - any variable you see prefixed with `m_` is a class member field. A

We use `m_` at work and I've come to really appreciate it. It makes reading code very easy - any variable you see prefixed with `m_` is a class member field. Anything else is either a function argument, a locally scoped variable, or has some other prefix (`k`, for example, referring to static constants). Since we read code far more than we write it, sprinkling little "usage hints" like this across symbol names removes a lot more cognitive overhead than I would have thought.