Parametric polymorphism: Difference between revisions

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   left->replace_all (new_value);
   right->replace_all (new_value);
+}</lang>
+=={{header|C sharp|C#}}==
+<lang csharp>namespace RosettaCode {
+    class BinaryTree<T> {
+        T value;
+        BinaryTree<T> left;
+        BinaryTree<T> right;
+        public void ReplaceAll(T value) {
+            this.value = value;
+            if (left != null) {
+                left.ReplaceAll(value);
+            }
+            if (right != null) {
+                right.ReplaceAll(value);
+            }
+        }
+    }
+}</lang>
+Sample that creates a tree to hold int values:
+<lang csharp>namespace RosettaCode {
+    class Program {
+        static void Main(string[] args) {
+            BinaryTree<int> tree = new BinaryTree<int>();
+            tree.ReplaceAll(5);
+        }
+    }
 }</lang>