how to remove a tuple of tupleset with conditions

Question

I habe the code like this:

tuple Variableset{
  int rooms;
  int days;
  int slots;
  int instructors;
  int groups;
  int courses;
}

{Variableset} A = ...;

tuple Solution{
  int days;
  int slots;
  int instructors;
}

{Solution} B = ...;

{Variableset} C;
execute {
    for (var s in B)
      for (var item in A){
        if (item.days == s.days && item.slots == s.slots
         && item.instructors == s.instructors) {
           C == A.remove(item);           
           
         };
      };
        
    };
};

I'm trying to create a new tuple set C by removing the tuples in A whose elements of B are the same as those of A. I know my code isn't quite right, I'd love some help to fix it. Thanks in advance!

Answer 1

Scripting is powerful but you do not need scripting in this. You can do that in modeling:

tuple Variableset{
  int rooms;
  int days;
  int slots;
  int instructors;
  int groups;
  int courses;
}

{Variableset} A = {<1,2,3,4,5,6>,<2,3,4,5,6,7>};

tuple Solution{
  int days;
  int slots;
  int instructors;
}

{Solution} B = {<3,4,5>};

{Variableset} C={<a,b,c,d,e,f> | <a,b,c,d,e,f> in A : <b,c,d> not in  B};
execute
{
  writeln(C);
}

which gives

{<1 2 3 4 5 6>}