def __eq__(self, rhs):
raise UnimplementedFunctionError("Function not yet implemented", rhs)
def cons(self, e):
raise UnimplementedFunctionError("Function not yet implemented for ", self.__class__.__name__)
def cons(self, e):
if e.__class__ != self.__class__ and e.__class__ != Symbol.__class__:
raise UnimplementedFunctionError('Cannot cons a string and a ',
e.__class__.__name__)
return String(e.data + self.data)
def cdr(self):
raise UnimplementedFunctionError('Function not yet implemented for ',
self.__class__.__name__)