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

pkg/fixnum/int32.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.
 
 /**
  * An immutable 32-bit signed integer, in the range [-2^31, 2^31 - 1].
  * Arithmetic operations may overflow in order to maintain this range.
  */
 class int32 implements intx {
 
@@ skipping 303 matching lines @@
     return _i > _convert(other);
   }
 
   bool operator >=(other) {
     if (other is int64) {
       return this.toInt64() < other;
     }
     return _i >= _convert(other);
   }
 
-  bool isEven() => (_i & 0x1) == 0;
-  bool isMaxValue() => _i == 2147483647;
-  bool isMinValue() => _i == -2147483648;
-  bool isNegative() => _i < 0;
-  bool isOdd() => (_i & 0x1) == 1;
-  bool isZero() => _i == 0;
+  bool get isEven => (_i & 0x1) == 0;
+  bool get isMaxValue => _i == 2147483647;
+  bool get isMinValue => _i == -2147483648;
+  bool get isNegative => _i < 0;
+  bool get isOdd => (_i & 0x1) == 1;
+  bool get isZero => _i == 0;
 
   int get hashCode => _i;
 
   int32 abs() => _i < 0 ? new int32.fromInt(-_i) : this;
 
   int numberOfLeadingZeros() => _numberOfLeadingZeros(_i);
   int numberOfTrailingZeros() => _numberOfTrailingZeros(_i);
 
   List<int> toBytes() {
     List<int> result = new List<int>(4);
     result[0] = _i & 0xff;
     result[1] = (_i >> 8) & 0xff;
     result[2] = (_i >> 16) & 0xff;
     result[3] = (_i >> 24) & 0xff;
     return result;
   }
 
   int toInt() => _i;
   int32 toInt32() => this;
   int64 toInt64() => new int64.fromInt(_i);
 
   String toString() => _i.toString();
   String toHexString() => _i.toRadixString(16);
   String toRadixString(int radix) => _i.toRadixString(radix);
 }