pkg/matcher: Small tweaks to improve analysis

lib/src/iterable_matchers.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.
 
 library matcher.iterable_matchers;
 
 import 'core_matchers.dart';
 import 'description.dart';
 import 'interfaces.dart';
 import 'util.dart';
@@ skipping 102 matching lines @@
 /// Returns a matcher which matches [Iterable]s that have the same length and
 /// the same elements as [expected], but not necessarily in the same order.
 ///
 /// Note that this is O(n^2) so should only be used on small objects.
 Matcher unorderedEquals(Iterable expected) => new _UnorderedEquals(expected);
 
 class _UnorderedEquals extends _UnorderedMatches {
   final List _expectedValues;
 
   _UnorderedEquals(Iterable expected)
-      : super(expected.map(equals)),
-        _expectedValues = expected.toList();
+      : _expectedValues = expected.toList(),
+        super(expected.map(equals));
 
   Description describe(Description description) => description
       .add('equals ')
       .addDescriptionOf(_expectedValues)
       .add(' unordered');
 }
 
 /// Iterable matchers match against [Iterable]s. We add this intermediate
 /// class to give better mismatch error messages than the base Matcher class.
 abstract class _IterableMatcher extends Matcher {
@@ skipping 123 matching lines @@
     } else {
       return mismatchDescription
           .add('has ')
           .addDescriptionOf(matchState["actual"])
           .add(' which is not $_description ')
           .addDescriptionOf(matchState["expected"])
           .add(' at index ${matchState["index"]}');
     }
   }
 }