C++ is widely used by the Apple OS teams, but they don't expose C++ APIs directly.
A lot of the plain-C APIs with a CoreFoundation style interface are actually C++ underneath. (No insider information necessary, this is easy to see in stack traces and process call stack samples.)
A lot of the plain-C APIs with a CoreFoundation style interface are actually C++ underneath. (No insider information necessary, this is easy to see in stack traces and process call stack samples.)