Origami, a monadic fold library for Scala

1. Origami Monadic folds for Scala Eric Torreborre ScalaSyd ™ @charlesofarrell

6. composition?reuse? performance? safety?

11. No exception, please!

14. finalization fold initialization state

15. stream fold monadic context

24. zip functor

25. contra-functor

28. for breaking out

31. side-effects!

32. natural transformation

33. closes resource!

35. fold with IO side-effects

37. sum=0,string=folds sum=5,string=are sum=8,string=great sum=0,string=folds sum=5,string=are sum=8,string=great

38. observeW ithState

39. Operators…

44. compositionreuse performance safety

46. implicits break-out monadic “fold” not battle-tested!

47. http://www.haskellforall.com/2013/08/composable-streaming-folds.html http://conal.net/blog/posts/another-lovely-example-of-type-class-morphisms https://www.fpcomplete.com/user/edwardk/cellular-automata/part-2 http://squing.blogspot.com.au/2008/11/beautiful-folding.html http://notes.backgroundsignal.com/Transducers.html

48. Thanks!

Origami, a monadic fold library for Scala

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