note.pl6

# Store the next available id for all new notes
last_id = 0

class Note:
    def __init__(self, memo, tags=''):
        '''initialize a note with memo and optional
        space-separated tags. Automatically set the note's
        creation date and a unique id.'''
        self.memo = memo
        self.tags = tags
        self.creation_date = datetime.date.today()
        global last_id
        last_id += 1
        self.id = last_id