FizzBuzz.csx

		string output = "";
		bool reset = false;
		int input = 15;

		public override void ViewDidLoad ()
		{
			base.ViewDidLoad ();
			// Perform any additional setup after loading the view, typically from a nib.

			/*
			If reset is true, clear the output and set reset to false
			*/
			var clearRule = GKRule.FromPredicate ((rules) => reset, rules => {
				output = "";
				reset = false;
			});
			clearRule.Salience = 1;

			var fizzRule = GKRule.FromPredicate (mod (3), rules => {
				output += "fizz";
			});
			fizzRule.Salience = 2;
			var buzzRule = GKRule.FromPredicate (mod (5), rules => { 
				output += "buzz";
			});
			 buzzRule.Salience = 2;

			/*
			This *always* evaluates to true, but is higher Salience, so evaluates after lower-salience items 
			(which is counter-intuitive).
			print the output, and reset (thus triggering "ResetRule" next time)
			*/
			var outputRule = GKRule.FromPredicate (rules => true, rules => {
				System.Console.WriteLine(output == "" ? input.ToString() : output);
				reset = true;
			});
			outputRule.Salience = 3;

			var rs = new GKRuleSystem ();
			rs.AddRules (new [] {
				clearRule,
				fizzRule,
				buzzRule,
				outputRule
			});

			for (input = 1; input < 16; input++) {
				rs.Evaluate ();
				rs.Reset ();
			}
		}

		protected Func<GKRuleSystem, bool> mod(int m)
		{
			Func<GKRuleSystem,bool> partiallyApplied = (rs) => input % m == 0;
			return partiallyApplied;
		}