More like Objective-C++, as otherwise it is lots of fun calling macOS APIs from C++.
And no, C++ isn't as prevalent on Apple platforms as on other vendors.
Hence why you will find out most of the C++ related documentation is for IO and Driver Kit, the Metal Shading Language dialect (based on C++14), LLVM, and that is about it.
Even Metal is actually implemented in Objective-C, with Swift and C++ bindings, and the C++ bindings are really low effort versus the Swift tooling.
And no, C++ isn't as prevalent on Apple platforms as on other vendors.
Hence why you will find out most of the C++ related documentation is for IO and Driver Kit, the Metal Shading Language dialect (based on C++14), LLVM, and that is about it.
Even Metal is actually implemented in Objective-C, with Swift and C++ bindings, and the C++ bindings are really low effort versus the Swift tooling.