IterableMixin class

1. Constructors
2. IterableMixin
3. Properties
4. first
5. isEmpty
6. isNotEmpty
7. last
8. length
9. single
10. hashCode
11. iterator
12. runtimeType
13. Methods
14. any
15. cast
16. contains
17. elementAt
18. every
19. expand
20. firstWhere
21. fold
22. followedBy
23. forEach
24. join
25. lastWhere
26. map
27. reduce
28. singleWhere
29. skip
30. skipWhile
31. take
32. takeWhile
33. toList
34. toSet
35. toString
36. where
37. whereType
38. noSuchMethod
39. Operators
40. operator ==