SCALA PROGRAMMING

Some programmers like to handle errors by throwing exceptions, others like to return the optional value None. Implement a combinator called deOptionize that takes a unary, option-returning function, f, as input and converts it into a non-option returning function g that handles errors by throwing exceptions.

Use your combinator to convert the following function:

def parseDigits(digits: String): Option[Int] = if (digits.matches("[0-9]*")) Some(digits.toInt) else None