Changeset 15067 for trunk/sources/HeuristicLab.Encodings.BinaryVectorEncoding/3.3/BinaryVectorEqualityComparer.cs

Timestamp:

06/26/17 23:13:15 (7 years ago)

Author:

abeham

Message:

#2730:

• Unified implementation of all equality comparers and similarity calculators in BinaryVector, IntegerVector, RealVector, Permutation, and LinearLinkage encodings
• Added Euclidean distance-based similarity calculators for real and integer vectors using a transformation function with scaling parameter

File:

• trunk/sources/HeuristicLab.Encodings.BinaryVectorEncoding/3.3/BinaryVectorEqualityComparer.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Encodings.BinaryVectorEncoding/3.3/BinaryVectorEqualityComparer.cs

@@ -19 +19 @@
  */
 #endregion
- 
+
+using System;
 using System.Collections.Generic;
-using System.Linq;
+using HeuristicLab.PluginInfrastructure;
 
 namespace HeuristicLab.Encodings.BinaryVectorEncoding {
+  [NonDiscoverableType]
   public class BinaryVectorEqualityComparer : EqualityComparer<BinaryVector> {
-    public override bool Equals(BinaryVector first, BinaryVector second) {
-      return first.SequenceEqual(second);
+    public override bool Equals(BinaryVector x, BinaryVector y) {
+      if (x == null && y == null) return true;
+      if (x == null || y == null) return false;
+      if (ReferenceEquals(x, y)) return true;
+      if (x.Length != y.Length) return false;
+      for (var i = 0; i < x.Length; i++)
+        if (x[i] != y[i]) return false;
+      return true;
     }
     public override int GetHashCode(BinaryVector obj) {
+      if (obj == null) throw new ArgumentNullException("obj", "BinaryVectorEqualityComparer: Cannot compute hash value of null.");
       unchecked {
         int hash = 17;