Principles of quality software, by Mark McIlroy

	2021



	1. Keep your subroutines short, from 1 to about 30 lines of code.

	2. Choose meaningful variable names and don't use a single variable for two purposes.

	3. Write a small amount of code and test it. Then write another small amount and test that.

		Don't attempt to write a large block of code and then test it.

	4. Use a small subset of the language features. This will make the code easier to read, and avoid potential bugs 
		
		in the compiler.