Fix issue 1741: add map to immutable list.

runtime/lib/array.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.
 
 class ListFactory<E> {
 
   factory List.from(Iterable<E> other) {
     GrowableObjectArray<E> list = new GrowableObjectArray<E>();
     for (final e in other) {
       list.add(e);
@@ skipping 198 matching lines @@
   }
 
   /**
    * Collection interface.
    */
 
   void forEach(f(E element)) {
     Collections.forEach(this, f);
   }
 
+  Collection map(f(E element)) {
+    return Collections.map(this, new GrowableObjectArray.withCapacity(length), f);
+  }
+

[siva, 2012/02/23 19:11:46]

Not for this change list but maybe a future refactor:

There seem to be a number of functions between ImmutableArray and ObjectArray
which are identical. Maybe we can have a baseclass which implements all these
common methods and ObjectArray and ImmutableArray can be derived from this base
class.

[srdjan, 2012/02/23 19:23:24]

We need mixins :-). Having subclass hierarchies just for code reuse is wrong,
AFAIK.

   Collection<E> filter(bool f(E element)) {
     return Collections.filter(this, new GrowableObjectArray<E>(), f);
   }
 
   bool every(bool f(E element)) {
     return Collections.every(this, f);
   }
 
   bool some(bool f(E element)) {
     return Collections.some(this, f);
@@ skipping 75 matching lines @@
     if (!hasNext()) {
       throw const NoMoreElementsException();
     }
     return _array[_pos++];
   }
 
   final List<E> _array;
   final int _length;  // Cache array length for faster access.
   int _pos;
 }