Add List.insert.

runtime/lib/growable_array.dart

Index: runtime/lib/growable_array.dart
diff --git a/runtime/lib/growable_array.dart b/runtime/lib/growable_array.dart
index 5759178e8609c68362b633b77af9dbea899808bf..3b5adc46bbd270dd79eaad0c0f6aa153d599f0da 100644
--- a/runtime/lib/growable_array.dart
+++ b/runtime/lib/growable_array.dart
@@ -8,6 +8,22 @@ class _GrowableObjectArray<T> implements List<T> {
         "GrowableObjectArray can only be allocated by the VM");
   }
 
+  void insert(int index, T element) {
+    if (index < 0 || index > length) throw new RangeError(index);

[Lasse Reichstein Nielsen, 2013/03/07 09:57:53]

new RangeError.range(index, 0, length)

[floitsch, 2013/03/07 12:53:53]

Done.

+    if (index == this.length) {
+      add(element);
+      return;
+    }
+    int oldLength = this.length;
+    this.length++;
+    Arrays.copy(this,
+                index,
+                this,
+                index + 1,
+                oldLength - index);
+    this[index] = element;
+  }
+
   T removeAt(int index) {
     if (index is! int) throw new ArgumentError(index);
     T result = this[index];