> a) You're going to forget it at least once. Which is why you should never process raw input in multiple places in your app. One method I've used for over a d

> a) You're going to forget it at least once. Which is why you should never process raw input in multiple places in your app. One method I've used for over a decade of webdev in any language: there's only one place to get the input from, and that place requires you specify what input is allowed.