I try to write pretty straightforward modern C++ as well, but have been bitten repeatedly by weird corners of the language. For a recent example, I was using t

I try to write pretty straightforward modern C++ as well, but have been bitten repeatedly by weird corners of the language. For a recent example, I was using the address of some functions from a library, and the library changed to provide the exact same functions in a different way that broke taking their address. Seems like that particular Abseil ToTW isn’t public, but it alluded to this practice being banned in the C++ STL. Or for another example, writing code that can be compiled by different versions of a single compiler, clang, e.g. across the Android NDK, XCode, latest LLVM on Linux, and Emscripten, will occasionally give surprising results. To say nothing of supporting msvc or gcc.