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

double class

1. Constructors
2. double
3. Properties
4. hashCode
5. isFinite
6. isInfinite
7. isNaN
8. isNegative
9. runtimeType
10. sign
11. Methods
12. abs
13. ceil
14. ceilToDouble
15. clamp
16. compareTo
17. floor
18. floorToDouble
19. noSuchMethod
20. remainder
21. round
22. roundToDouble
23. toDouble
24. toInt
25. toString
26. toStringAsExponential
27. toStringAsFixed
28. toStringAsPrecision
29. truncate
30. truncateToDouble
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
47. Constants
48. infinity
49. maxFinite
50. minPositive
51. nan
52. negativeInfinity

double operator +(num other);