1. Dart
2. dart:core
3. num
4. isNaN property

num class

1. Constructors
2. num
3. Properties
4. hashCode
5. isFinite
6. isInfinite
7. isNaN
8. isNegative
9. sign
10. runtimeType
11. Methods
12. abs
13. ceil
14. ceilToDouble
15. clamp
16. compareTo
17. floor
18. floorToDouble
19. remainder
20. round
21. roundToDouble
22. toDouble
23. toInt
24. toString
25. toStringAsExponential
26. toStringAsFixed
27. toStringAsPrecision
28. truncate
29. truncateToDouble
30. noSuchMethod
31. Operators
32. operator %
33. operator *
34. operator +
35. operator -
36. operator /
37. operator <
38. operator <=
39. operator ==
40. operator >
41. operator >=
42. operator unary-
43. operator ~/
44. Static methods
45. parse
46. tryParse

bool get isNaN;