# Package org.cpsolver.ifs.constant

Extension of the model with constant variables.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  ConstantVariable<T extends Value<?,T>> | Extension of a variable with the possibility to have a constant value.

- Class Summary
  Class | Description
  --- | ---
  ConstantModel<V extends Variable<V,T>,T extends Value<V,T>> | Extension of the model with constant variables.

## Package org.cpsolver.ifs.constant Description

Extension of the model with constant variables. Such variables are excluded from the solver process, however, they can be included in constraints. Such model can allow us to build a solution on top of another solution (e.g., committed classes in the course timetabling).

Version:
  IFS 1.4 (Instructor Sectioning)
  Copyright (C) 2024 Tomáš Müller
  muller@unitime.org
  http://muller.unitime.org
  This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
  This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
  You should have received a copy of the GNU Lesser General Public License along with this library; if not see http://www.gnu.org/licenses/.
Author:
  Tomáš Müller