#region License Information /* HeuristicLab * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL) * * This file is part of HeuristicLab. * * HeuristicLab is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * HeuristicLab 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HeuristicLab. If not, see . */ #endregion using System; using System.Collections.Generic; using System.Text; using HeuristicLab.Core; using System.Diagnostics; using HeuristicLab.Constraints; using System.Linq; using HeuristicLab.DataAnalysis; namespace HeuristicLab.Functions { public class Addition : FunctionBase { public override string Description { get { return @"Returns the sum of all sub-operator results. (+ 3) => 3 (+ 2 3) => 5 (+ 3 4 5) => 12"; } } public Addition() : base() { // 2 - 3 seems like an reasonable defaut (used for +,-,*,/) (discussion with swinkler and maffenze) AddConstraint(new NumberOfSubOperatorsConstraint(2, 3)); } public Addition(Addition source, IDictionary clonedObjects) : base(source, clonedObjects) { } public override double Evaluate(Dataset dataset, int sampleIndex) { // (+ 3) => 3 // (+ 2 3) => 5 // (+ 3 4 5) => 12 double sum = 0.0; for (int i = SubFunctions.Count - 1; i >= 0; i--) { sum += SubFunctions[i].Evaluate(dataset, sampleIndex); } return sum; } public override object Clone(IDictionary clonedObjects) { Addition clone = new Addition(this, clonedObjects); clonedObjects.Add(clone.Guid, clone); return clone; } public override void Accept(IFunctionVisitor visitor) { visitor.Visit(this); } } }