"Include what you use" means this: for every symbol (type, function, variable, or macro) that you use in foo.cc (or foo.cpp), either foo.cc or foo.h should include a .h file that exports the ...
With all the recent changes, you might be wondering, “What is Twitter?” The short-form social media platform has undergone a complete rebrand to X thanks to Elon Musk, but we’re still here to help you ...