Duplicating my comment from the other discussion of this article:

> In Java, 70% of duplicates were due to code generation. For C++ is was 18%, for Python 85%, for JavaScript 70%.

C++ is the real outlier there. That could be because C++ code is much harder to generate, but I don't buy that it's that much harder than Java. Or it could be because C++ templates aren't considered "code generation". Or it could be because C++ doesn't get used for projects with that much boilerplate code. Or...