You inherit some code. Is that string a username or a phone number? Who knows. Someone accidentally swapped two parameter values. Now the phone number is a username and you’ve got a headache of trying to figure out what’s wrong.
By having stronger types this won’t come up as a problem. You don’t have to rely on having the best programmers in the world that never make mistakes (tm) to be on your team and instead rely on the computer making guard rails for you so you can’t screw up minor things like that.
By having stronger types this won’t come up as a problem. You don’t have to rely on having the best programmers in the world that never make mistakes (tm) to be on your team and instead rely on the computer making guard rails for you so you can’t screw up minor things like that.