|  | @@ -1,7 +1,4 @@
 | 
	
		
			
				|  |  | -% Generate
 | 
	
		
			
				|  |  | -3{register(C) : course(C, _, _)}6.
 | 
	
		
			
				|  |  | -
 | 
	
		
			
				|  |  | -% Define
 | 
	
		
			
				|  |  | +% Instance
 | 
	
		
			
				|  |  |  course(1,1,5). 	course(1,2,5).
 | 
	
		
			
				|  |  |  course(2,1,4). 	course(2,2,4).
 | 
	
		
			
				|  |  |  course(3,1,6).
 | 
	
	
		
			
				|  | @@ -16,5 +13,12 @@ course(5,1,4).
 | 
	
		
			
				|  |  |  				course(7,3,4). 	course(7,4,4).
 | 
	
		
			
				|  |  |  				course(8,3,5). 	course(8,4,5).
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  | +% Generate
 | 
	
		
			
				|  |  | +3{register(C) : course(C, _, _)}6.
 | 
	
		
			
				|  |  | +
 | 
	
		
			
				|  |  | +% Define
 | 
	
		
			
				|  |  | +domain(C, D) :- course(C, D, _).
 | 
	
		
			
				|  |  | +domain_count(N) :- N = #count {domain(C, _) : register(C)}.
 | 
	
		
			
				|  |  | +
 | 
	
		
			
				|  |  |  % Display
 | 
	
		
			
				|  |  |  #show register/1.
 |