On Fri, Dec 18, 2009 at 07:02:16PM +0100, kane96@gmx.de wrote:
maybe the subject is a little bit confusing :p
I have a organiser list like that and have to add events (like panic, xmas, ...) which is also a type of tupel for a specific date:
aliceOrg = [ ( (21,Dec,2009), [panic,aliceBDay] ) ( (25,Dec,2009), [xmas] ) ( (10,Jan,2010), [bobBDay] )
What function(s) can I use to add these nested lists and tupels here?
You can use all the functions for manipulating lists and tuples in the standard libraries... I'm not entirely sure what you are asking. Let me suggest, however, that you probably don't want to be using tuples so much; make your own data types. Something like this: type Day = Int data Month = Jan | Feb | ... type Year = Int data Date = Date Day Month Year data CalEntry = CalEntry Date [Event] data Event = ... type Organizer = [CalEntry] This is much less confusing since instead of just tuples everywhere you have specific types that say exactly what the data represents. -Brent