> Its not enough to know a function accepts ints; I want to know its range as well. Types actually help with this too. Instead of changing the possible range o

> Its not enough to know a function accepts ints; I want to know its range as well. Types actually help with this too. Instead of changing the possible range of a thing, change its name too: the compiler will quickly let you know of all the places that depend on it. Now you know what to check.