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