Changeset 10067 for branches/HeuristicLab.Problems.GPDL/HeuristicLab.Grammars/3.3/Sequence.cs

Timestamp:

10/18/13 21:33:56 (11 years ago)

Author:

gkronber

Message:

#2026 worked on brute force solver for GPDL problems.

File:

• branches/HeuristicLab.Problems.GPDL/HeuristicLab.Grammars/3.3/Sequence.cs (modified) (2 diffs)

branches/HeuristicLab.Problems.GPDL/HeuristicLab.Grammars/3.3/Sequence.cs

@@ -21 +21 @@
 
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Linq;
 using System.Text;
 
 namespace HeuristicLab.Grammars {
-  public class Sequence : List<ISymbol> {
-    public Sequence()
-      : base() {
-    }
-
-    public Sequence(IEnumerable<ISymbol> seq)
-      : base() {
-      this.AddRange(seq);
-    }
-    public IEnumerator<ISymbol> GetEnumerator() {
-      return (IEnumerator<ISymbol>)base.GetEnumerator();
+  public class Sequence : ReadOnlyCollection<ISymbol> {
+    public Sequence(IList<ISymbol> seq)
+      : base(seq) {
     }
 
@@ -50 +43 @@
 
     public override string ToString() {
-      var b = new StringBuilder();
-      ForEach(s => b.AppendFormat("{0} ", s));
-      return b.ToString();
+      return this.Aggregate("", (str, symb) => str + symb);
     }
   }