The document discusses concepts related to time, concurrency, and functional programming. It explores ideas such as multiple intersecting timelines representing concurrency, action occurring sequentially while perception is parallel, and functional reactive programming involving inversion of control. Various concurrency models like shared-isolated, asynchronous, synchronous, coordinated, and autonomous are also mentioned.

1. !
The time is out of joint: O cursed spite,
That ever I was born to set it right!
Simon.Belak@hekovnik.si
@sbelak
WebCamp Ljubljana, 26. 4. 2014

2. The future
is a function of the past,
it doesn’t change it

3. Things don’t change
in place*
* time is just a dimension

4. Concurrency
=
multiple intersecting timelines

5. Action is sequential,
perception is parallel

6. Value!
an immutable quantity or
composition thereof
Time!
relative ordering of casual
values
State!
value of an identity at
a point in time
Identity!
entity we associate with a
series of states over time

7. Functional
programming

8. Persistent data structures

9. Action is sequential,
perception is parallel

10. map/reduce

11. Concurrency models
sharedisolated
asynchronous
synchronous
coordinated
autonomous

12. Concurrency models
sharedisolated
asynchronous
synchronous
coordinated
autonomous

13. Concurrency models
sharedisolated
asynchronous
synchronous
coordinated
autonomous

14. Concurrency models
sharedisolated
asynchronous
synchronous
coordinated
autonomous

15. Propagating change

16. Reactive programming
Inversion of control

17. Functional
Reactive
programming

18. Action is sequential,
perception is parallel

19. Code = data

20. Call graph + log

22. Questions