Make first and last getters.

lib/core/list.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * A [List] is an indexable collection with a length. It can be of
  * fixed size or extendable.
  */
 interface List<E> extends Collection<E>, Sequence<E>
                   default ListImplementation<E> {
@@ skipping 108 matching lines @@
    * Pops and returns the last element of the list.
    * Throws a [UnsupportedError] if the length of the
    * list cannot be changed.
    */
   E removeLast();
 
   /**
    * Returns the last element of the list, or throws an out of bounds
    * exception if the list is empty.
    */
-  E last();
+  E get last;
 
   /**
    * Returns a new list containing [length] elements from the list,
    * starting at  [start].
    * Returns an empty list if [length] is 0.
    * Throws an [ArgumentError] if [length] is negative.
    * Throws an [IndexOutOfRangeException] if [start] or
    * [:start + length - 1:] are out of range.
    */
   List<E> getRange(int start, int length);
@@ skipping 27 matching lines @@
    * not extendable.
    * If [length] is 0, this method does not do anything.
    * If [start] is the length of the list, this method inserts the
    * range at the end of the list.
    * Throws an [ArgumentError] if [length] is negative.
    * Throws an [IndexOutOfRangeException] if [start] is negative or if
    * [start] is greater than the length of the list.
    */
   void insertRange(int start, int length, [E initialValue]);
 }