truly spoken like someone who has never worked on a large C/C++ project

not saying it’s good design, I ditched C++ long ago. at least the C++20 modules API is gonna fix this, right guys?

pretty sure the meme is about how the implementation looks ugly but using the implementation looks good because all the code is abstracted away. if it was like you said then why would they compare the code to the main.cpp

The reason is that header files are pretty much copy/pasted into your c files when you include them. so the code in them keeps getting recompiled for every c file, which drastically increases overall build times. If you only declare in the header and have one c file implementing the functions you compile them only once.

Why are you putting the implementation in the .h file? You’re supposed to declare in the header and implement in the .cpp files. The meme is reversed