Edge cost and node item settable

Author: mitchellri

src/Dijkstra.NET/Graph/Edge.cs

@@ -3,7 +3,7 @@
 
 namespace Dijkstra.NET.Graph
 {
-    public readonly struct Edge<T, TCustom>: IEquatable<Edge<T, TCustom>> where TCustom: IEquatable<TCustom>
+    public struct Edge<T, TCustom>: IEquatable<Edge<T, TCustom>> where TCustom: IEquatable<TCustom>
     {
         public Edge(INode<T, TCustom> node, int cost, TCustom custom)
         {
@@ -14,7 +14,7 @@ public Edge(INode<T, TCustom> node, int cost, TCustom custom)
 
         public INode<T, TCustom> Node { get; }
 
-        public int Cost { get; }
+        public int Cost { get; set; }
 
         public TCustom Item { get; }
 
@@ -42,5 +42,9 @@ public override bool Equals(object obj)
             return Equals(other.Value);
         }
 
+        public void SetCost(int cost)
+        {
+            Cost = cost;
+        }
     }
 }

src/Dijkstra.NET/Graph/INode.cs

@@ -10,6 +10,6 @@ public interface INode
 
     public interface INode<T, TEdgeCustom> : INode, IEnumerable<Edge<T, TEdgeCustom>> where TEdgeCustom : IEquatable<TEdgeCustom>
     {
-        T Item { get; }
+        T Item { get; set; }
     }
 }

src/Dijkstra.NET/Graph/Node.cs

@@ -32,7 +32,7 @@ public static EdgeTemp<T, TEdgeCustom> operator>>(Node<T, TEdgeCustom> nodeFrom,
 
         public uint Key { get; }
 
-        public T Item { get; }
+        public T Item { get; set; }
 
         public int EdgesCount { get; internal set; }