Do you have any idea why this is not working? Atoms can contain any character if they are enclosed within single quotes and an escape convention exists which allows any character to be used within an atom. In 1989 the building was heavily damaged by fire, but it has since been restored. The syntax {D1,D2,...,Dn} denotes a tuple whose arguments are D1, D2, ... Dn. Haskell is a standardized, general-purpose purely functional programming language, with non-strict semantics and strong static typing.
