Dart Side of the Moon

Transcript

1. Yehor Lvivski @lvivski

2. The Dart side of the Moon

3. None

4. class-based single inheritance object-oriented

5. History

6. Oct 11, 2011 Apr 16, 2013 Summer 2013

7. M1, July 2012 • No explicit interfaces • No `+` on Strings

   • Cascades `o..method()`

8. M2, December 2012 • Better Dart2js • PUB • Better libraries API

9. M3, February 2013 • Streams API • Lazy Iterators

10. M4, April 2013 Stability!

11. Who’s behind?

12. None
13. None

14. Why?

15. Performance

16. main(){}! Tree shaking Classes and Interfaces Optional types Concurrency Operator

    overloading Optional and Named arguments Lightweight syntax

17. It’s not a syntax sugar

18. Standalone VM Browser integrated VM dart2js Compiler

19. None

20. How it works

21. None
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24. Is it even possible?

25. Generated code is faster, than handwritten. Prototype-less code is faster,

    than Prototype chains. Inlined functions, are faster too ;)
26. None

27. Laziness

28. None

29. Laziness • map()! • where() (filter analogue) • expand()!

30. Streams Reactive Programming

31. Streams •  emit a repeating series of events (such as

    messages, file data, user clicks) •  single- or multi-subscriber •  methods to take partial data  (first,  take,   skip...)   •  check data (contains,  any,  every)   •  transform

32. Streams are Everywhere • Iterators (List, Queue, Set) • IO (File, HTTP)

    • Events

33. Infrastructure

34. Editors

35. None
36. None

37. Package manager

38. None

39. Components

40. Dart Web UI Package

41. None

42. Demo time!

43. Links •  h'p://www.dartlang.org   •  h'p://github.com/dart-­‐lang/web-­‐ui   •  h'p://github.com/lvivski  

    – speaker,  start,  hart,  gloss,  quart,  archer   Thanks