Make isEmpty a getter.

runtime/bin/socket_stream_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 _SocketInputStream implements SocketInputStream {
   _SocketInputStream(Socket socket) : _socket = socket {
     if (_socket._closed) _closed = true;
     _socket.onClosed = _onClosed;
   }
 
@@ skipping 96 matching lines @@
     return _write(
         buffer, offset, (len == null) ? buffer.length - offset : len, true);
   }
 
   void flush() {
     // Nothing to do on a socket output stream.
   }
 
   void close() {
     if (_closing && _closed) return;
-    if (!_pendingWrites.isEmpty()) {
+    if (!_pendingWrites.isEmpty) {
       // Mark the socket for close when all data is written.
       _closing = true;
       _socket._onWrite = _onWrite;
     } else {
       // Close the socket for writing.
       _socket._closeWrite();
       _closed = true;
       // Invoke the callback asynchronously.
       new Timer(0, (t) {
         if (_onClosed != null) _onClosed();
@@ skipping 17 matching lines @@
     }
   }
 
   void set onClosed(void callback()) {
     _onClosed = callback;
   }
 
   bool _write(List<int> buffer, int offset, int len, bool copyBuffer) {
     if (_closing || _closed) throw new StreamException("Stream closed");
     int bytesWritten = 0;
-    if (_pendingWrites.isEmpty()) {
+    if (_pendingWrites.isEmpty) {
       // If nothing is buffered write as much as possible and buffer
       // the rest.
       bytesWritten = _socket.writeList(buffer, offset, len);
       if (bytesWritten == len) return true;
     }
 
     // Place remaining data on the pending writes queue.
     int notWrittenOffset = offset + bytesWritten;
     if (copyBuffer) {
       List<int> newBuffer =
           buffer.getRange(notWrittenOffset, len - bytesWritten);
       _pendingWrites.add(newBuffer);
     } else {
       assert(offset + len == buffer.length);
       _pendingWrites.add(buffer, notWrittenOffset);
     }
     _socket._onWrite = _onWrite;
     return false;
   }
 
   void _onWrite() {
     // Write as much buffered data to the socket as possible.
-    while (!_pendingWrites.isEmpty()) {
+    while (!_pendingWrites.isEmpty) {
       List<int> buffer = _pendingWrites.first;
       int offset = _pendingWrites.index;
       int bytesToWrite = buffer.length - offset;
       int bytesWritten;
       try {
         bytesWritten = _socket.writeList(buffer, offset, bytesToWrite);
       } catch (e) {
         _pendingWrites.clear();
         _onSocketError(e);
         return;
@@ skipping 32 matching lines @@
     }
   }
 
   Socket _socket;
   _BufferList _pendingWrites;
   Function _onNoPendingWrites;
   Function _onClosed;
   bool _closing = false;
   bool _closed = false;
 }