Originally posted by: SystemAdmin

[UDOPS said:]

What is wrong with this range syntax?

b in min(r.origin, r.destination)+1..max(r.origin, r.destination)-1

It is used in a set constructor.

I tried adding parentheses and brackets, no improvement.
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[UDOPS said:]

I think I found it. I was expecting the range to iterate over a slice, but apparently slicing is not happening.

The full statement was

<various elements> | r in Trains, b in min(r.origin, r.destination)+1..max(r.origin, r.destination)-1

OPL was trying to find the min/max over all elements of Trains, not the current slice.

#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[alain.chabrier said:]

Try :

tuple Train {
  int origin;
  int destination;
  }
 
{Train} Trains ={<10,20>,<30,40>};

{int} c = {b | r in Trains, b in minl(r.origin, r.destination)+1..maxl(r.origin, r.destination)-1};

execute {
writeln(c);
}

min is for aggregate minimum
and minl is for minimum in an explicit list.

Alain
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[UDOPS said:]

Very useful, thank you!
#DecisionOptimization
#OPLusingCPLEXOptimizer