Lots of frog cleanup

frog/lib/num.dart

 // Copyright (c) 2011, 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.
 
 // Dart core library.
 
 interface num extends Comparable, Hashable {
   // Arithmetic operations.
   num operator +(num other);
   num operator -(num other);
   num operator *(num other);
   num operator %(num other);
   num operator /(num other);
   // Truncating division.
   num operator ~/(num other);
   // The unary '-' operator.
   num operator negate();
   num remainder(num other);
 
   // Relational operations.
   bool operator <(num other);
   bool operator <=(num other);
   bool operator >(num other);
   bool operator >=(num other);
 
+  // TODO(jimhug): Cheap trick...
+  bool operator ==(var other);
+
+
   // Predicates.
   bool isEven();
   bool isOdd();
   bool isNaN();
   bool isNegative();
   bool isInfinite();
 
   num abs();
   num round();
   num floor();
@@ skipping 12 matching lines @@
   // to know that most int operations are closed over integers.
 
   // TODO(jimhug): Bit-operations stolen from int
   int operator &(int other);
   int operator |(int other);
   int operator ^(int other);
   int operator ~();
   int operator <<(int shiftAmount);
   int operator >>(int shiftAmount);
 }