1. Dart
2. dart:core
3. double
4. operator + abstract method

double class

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

double operator +(num other);