Reapply 'Add reduce to Collection.'

runtime/lib/byte_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.
 
 /**
  * A random-access sequence of bytes that also provides random access to
  * the fixed-width integers and floating point numbers represented by
  * those bytes. Byte arrays may be used to pack and unpack data from
  * external sources (such as networks or files systems), and to process
  * large quantities of numerical data more efficiently than would be possible
@@ skipping 794 matching lines @@
       f(this[i]);
     }
   }
 
   Collection map(f(element)) {
     return Collections.map(this,
                            new GrowableObjectArray.withCapacity(length),
                            f);
   }
 
+  Dynamic reduce(Dynamic initialValue,
+                 Dynamic combine(Dynamic initialValue, element)) {
+    return Collections.reduce(this, initialValue, combine);
+  }
+
   Collection filter(bool f(element)) {
     return Collections.filter(this, new GrowableObjectArray(), f);
   }
 
   bool every(bool f(element)) {
     return Collections.every(this, f);
   }
 
   bool some(bool f(element)) {
     return Collections.some(this, f);
@@ skipping 1454 matching lines @@
       f(this[i]);
     }
   }
 
   Collection map(f(element)) {
     return Collections.map(this,
                            new GrowableObjectArray.withCapacity(length),
                            f);
   }
 
+  Dynamic reduce(Dynamic initialValue,
+                 Dynamic combine(Dynamic initialValue, element)) {
+    return Collections.reduce(this, initialValue, combine);
+  }
+
   Collection filter(bool f(element)) {
     return Collections.filter(this, new GrowableObjectArray(), f);
   }
 
   bool every(bool f(element)) {
     return Collections.every(this, f);
   }
 
   bool some(bool f(element)) {
     return Collections.some(this, f);;
@@ skipping 777 matching lines @@
     }
     _rangeCheck(this.length, start, length);
     return _array.subByteArray(_offset + start, length);
   }
 
   static final int _BYTES_PER_ELEMENT = 8;
   final ByteArray _array;
   final int _offset;
   final int _length;
 }