"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 ...

Scraping instead of prerinsing also saves water. Studies show that dishwashers use less water than hand-washing dishes, but rinsing your dishes beforehand cancels that out. Modern kitchen faucets ...