Knowing that an empty string is 41 bytes or how many ns it takes to do arithmetic operations is not general knowledge.
How is it not general knowledge? How do you otherwise gauge if your program is taking a reasonable amount of time, and, if not, how do you figure out how to fix it?
How is it not general knowledge? How do you otherwise gauge if your program is taking a reasonable amount of time, and, if not, how do you figure out how to fix it?