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So when a user sends a request to register an account, they send their username, password, email, and other info. The registration function must verify all of their data. An example would be: verify email not in use verify username not in use verify username is alphanumeric verify all fields are above X characters long verify all fields are less than Y characters long Now I don't want to have a 5 level deep if or case statement, but what other options do I have? Splitting it into separate functions sounds like a good idea, but then I just have to check the return value of the functions in some sort of conditional and it's back to the original problem. I could separate them into functions and then call an if statement with all of the conditionals OR'd together, but that wouldn't give me what I want because I need to be able to tell the user the specific error if there was one. How does one handle this kind of situation in erlang? Is there an equivalent of a return statement, or does it have to be the last executable line in a function to be a return value?

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