Make first and last getters.

runtime/bin/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.
 
 class _Path implements Path {
   final String _path;
 
   _Path(String source) : _path = source;
   _Path.fromNative(String source) : _path = _clean(source);
 
@@ skipping 51 matching lines @@
 
       for (int i = common + 1; i < baseSegments.length; i++) {
         sb.add('../');
       }
       if (base.hasTrailingSeparator) {
         sb.add('../');
       }
       for (int i = common; i < pathSegments.length - 1; i++) {
         sb.add('${pathSegments[i]}/');
       }
-      sb.add('${pathSegments.last()}');
+      sb.add('${pathSegments.last}');
       if (hasTrailingSeparator) {
         sb.add('/');
       }
       return new Path(sb.toString());
     }
     throw new NotImplementedException(
       "Unimplemented case of Path.relativeTo(base):\n"
       "  Only absolute paths are handled at present.\n"
       "  Arguments: $_path.relativeTo($base)");
   }
@@ skipping 29 matching lines @@
     List segs = _path.split('/');  // Don't mask the getter 'segments'.
     if (segs[0] == '') {  // Absolute path
       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 /.
+    if (segs.last == '') segs.removeLast();  // Path ends with /.
     // No remaining segments can be ., .., or empty.
     return !segs.some((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] == ':') {
       drive = segs[0];
       segs.removeRange(0, 1);
     }
     List newSegs = [];
     for (String segment in segs) {
       switch (segment) {
         case '..':
           // Absolute paths drop leading .. markers, including after a drive.
           if (newSegs.isEmpty) {
             if (isAbs) {
               // Do nothing: drop the segment.
             } else {
               newSegs.add('..');
             }
-          } else if (newSegs.last() == '..') {
+          } else if (newSegs.last == '..') {
             newSegs.add('..');
           } else {
             newSegs.removeLast();
           }
           break;
         case '.':
         case '':
           // Do nothing - drop the segment.
           break;
         default:
@@ skipping 75 matching lines @@
     if (pos < 0) return new Path('');
     while (pos > 0 && _path[pos - 1] == '/') --pos;
     return new Path((pos > 0) ? _path.substring(0, pos) : '/');
   }
 
   String get filename {
     int pos = _path.lastIndexOf('/');
     return _path.substring(pos + 1);
   }
 }