Haskell Quiz/DayRange
DayRange (#92)
If you've ever created a web application that deals with scheduling recurring events, you may have found yourself creating a method to convert a list of days into a more human-readable string.
For example, suppose a musician plays at a certain venue on Monday, Tuesday, Wednesday, and Saturday. You could pass a list of associated day numbers to your object or method, which might return "Mon-Wed, Sat".
The purpose of this quiz is to find the best "Haskell way" to generate this sentence-like string.