C++ Header Compile Times

Unless they use pre compiled headers.

Still using header files in the 22nd century?

I’m a C noob, so why aren’t header only files the norm? Seems a lot easier to deal with then a split header and c file

Isn't this the reason precompiled headers are a thing?

sadly no, modules won't solve this problem. Yes you can write your implementation in a single module but it'll behave as if you were writing them in a .h file. That means that changing a single number in a module will trigger a recompilation of all the dependent modules. At the end of the day you end up with slower compile times for small changes. I was hoping to finally be able to be done with header files but no.. another missed opportunity for C++. Perhaps future C++ compilers will

Not currently. I think it can be largely attributed to header files, for which we currently have no solution in modern C++. Think about what your code would look like if you expanded all #includes of a single file, each containing entire class definitions that need to be parsed.One of the proposals for the next C++ standard is for modules, which would allow better symbol importing and would largely boost compilation speeds, among other benefits.

Welcome to modern c++, where everything is a header file and compile times don't matter.

Are we speaking in a general sense here? Because the root of this is headers needing to be compiled with (almost) every use in C++. We could get rid of that while maintaining the same functionality. It's not a very bold claim unless there's a requirement of "no significant language changes"

Pre-compiled headers, binary libraries, avoid header only libraries, if lucky to be on latest clang/VC++, modules.

In this case I really have to nitpick about the use of "C/C++": This specific problem really only exists in C++, because there it is common to put implementation code into headers via inline and template functions (worst example is the C++ stdlib), while in C you only put declarations into headers, and just parsing a few hundred lines of struct and function declarations won't blow up your build times (while just including a common C++ stdlib header like pulls i