This C++ template helps when you want to add elements to a model. In those synopses, X represents a class, x is an instance of the class X. The class X must be IloExtractable, IloExtractableArray, or one of their subclasses.

If model is an instance of IloModel, derived from IloExtractable, then x will be added to the top level of that model.

As an alternative to this way of adding extractable objects to a model, you may also use IloModel::add.

This template preserves the original type of its argument x when it returns x. This feature of the template may be useful, for example, in cases like this:

 IloRange rng = IloAdd(model, 3 * x + y == 17);

For a comparison of these two ways of adding extractable objects to a model, see Adding Extractable Objects in the documentation of IloExtractable.