ILOSELECTOR0

The ILOSELECTORi macros define several functions named name that create and return an instance of selector of objects of class tx with a selection function using i extra fields of type td1...tdi.

The signatures of these functions are:

IloSelector<tx,tc> name(IloEnv), that returns a selector allocated on the environment; and
IloSelector<tx,tc> name(IloSolver), that returns a selector allocated on the solver

The user-written code specifies which element of the given collection of type tc is selected by invoking the select(tx) method.

Example

The following code defines a selector which randomly selects a variable in an array:

 ILOSELECTOR0(RandomVariableInArraySelector,
              IlcIntVar,
              IlcIntVarArray, array) {
   IlcInt index = array[0].getManager().getRandom().getInt(array.getSize()-1);
   select(array[index]);
 }

This macro defines the following function:

 IloSelector<IlcIntVar,IlcIntVarArray> RandomVariableInArraySelector(IloSolver);

For example, the following code defines an instance of a selector to select a random variable in an IlcIntVarArray:

 IloSolver solver = ...;
 IloSelector<IlcIntVar,IlcIntVarArray> randomVariableInArraySelector = RandomVariableInArraySelector(solver);
 IlcIntVarArray array = ...;
 IlcIntVar selected;
 IlcBool isSelected = randomVariableInArraySelector.select(selected, array);

For more information, see Selectors.

Macro ILOSELECTOR0