Dart Side of the Moon

Transcript

1. Yehor Lvivski
   @lvivski
   

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2. The Dart side of the
   Moon
   

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4. class-based
   single inheritance
   object-oriented
   

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5. History
   

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

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7. M1, July 2012
   • No explicit interfaces
   • No `+` on Strings
   • Cascades `o..method()`
   

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

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

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10. M4, April 2013
    
    Stability!
    

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11. Who’s behind?
    

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14. Why?
    

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15. Performance
    

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16. main(){}!
    Tree shaking
    Classes and Interfaces
    Optional types
    Concurrency
    Operator overloading
    Optional and Named arguments
    Lightweight syntax
    

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17. It’s not a syntax
    sugar
    

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18. Standalone VM
    
    Browser integrated VM
    
    dart2js Compiler
    

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20. How it works
    

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24. Is it even possible?
    

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25. Generated code is faster, than
    handwritten.
    Prototype-less code is faster, than
    Prototype chains.
    Inlined functions, are faster too ;)
    

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27. Laziness
    

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

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30. Streams
    Reactive Programming
    

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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
    

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

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33. Infrastructure
    

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34. Editors
    

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37. Package manager
    

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39. Components
    

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40. Dart Web UI Package
    

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42. Demo time!
    

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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
    

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