isEven, isOdd, isNegative, isMaxValue, isMinValue, isInfinite, isPositive, isSingleValue.

pkg/fixnum/test/int_64_test.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('int64test');
 #import('../fixnum.dart');
 
 void main() {
   testAdditive();
   testBitOps();
@@ skipping 249 matching lines @@
 
   Expect.equals(new int64.fromInts(0x708, 0x002E9501),
       int64.MAX_VALUE ~/ new int64.fromInt(0x123456));
   Expect.equals(new int64.fromInt(0x3BDA9),
       int64.MAX_VALUE % new int64.fromInt(0x123456));
 }
 
 void testFactorial() {
 
   int64 _fact(int64 n) {
-    if (n.isZero()) {
+    if (n.isZero) {
       return new int64.fromInt(1);
     } else {
       return n * _fact(n - new int64.fromInt(1));
     }
   }
 
   int64 fact18 = _fact(new int64.fromInt(18));
   int64 fact17 = _fact(new int64.fromInt(17));
   Expect.equals(new int64.fromInt(18), fact18 ~/ fact17);
 }
@@ skipping 316 matching lines @@
   Expect.equals("777777777777777777777", int64.MAX_VALUE.toRadixString(8));
   Expect.equals("67404283172107811827", int64.MAX_VALUE.toRadixString(9));
   Expect.equals("9223372036854775807", int64.MAX_VALUE.toRadixString(10));
   Expect.equals("1728002635214590697", int64.MAX_VALUE.toRadixString(11));
   Expect.equals("41A792678515120367", int64.MAX_VALUE.toRadixString(12));
   Expect.equals("10B269549075433C37", int64.MAX_VALUE.toRadixString(13));
   Expect.equals("4340724C6C71DC7A7", int64.MAX_VALUE.toRadixString(14));
   Expect.equals("160E2AD3246366807", int64.MAX_VALUE.toRadixString(15));
   Expect.equals("7FFFFFFFFFFFFFFF", int64.MAX_VALUE.toRadixString(16));
 }