Big merge from experimental to bleeding edge.

sdk/lib/io/path_impl.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.
 
 part of dart.io;
 
 class _Path implements Path {
   final String _path;
   final bool isWindowsShare;
 
@@ skipping 116 matching lines @@
       segs[0] = null;  // Faster than removeRange().
     } else {  // A canonical relative path may start with .. segments.
       for (int pos = 0;
            pos < segs.length && segs[pos] == '..';
            ++pos) {
         segs[pos] = null;
       }
     }
     if (segs.last == '') segs.removeLast();  // Path ends with /.
     // No remaining segments can be ., .., or empty.
-    return !segs.some((s) => s == '' || s == '.' || s == '..');
+    return !segs.any((s) => s == '' || s == '.' || s == '..');
   }
 
   Path makeCanonical() {
     bool isAbs = isAbsolute;
     List segs = segments();
     String drive;
     if (isAbs &&
         !segs.isEmpty &&
         segs[0].length == 2 &&
         segs[0][1] == ':') {
@@ skipping 105 matching lines @@
     while (pos > 0 && _path[pos - 1] == '/') --pos;
     var dirPath = (pos > 0) ? _path.substring(0, pos) : '/';
     return new _Path._internal(dirPath, isWindowsShare);
   }
 
   String get filename {
     int pos = _path.lastIndexOf('/');
     return _path.substring(pos + 1);
   }
 }