Robert Gurgul
"Introduction to Reactive programming"
2016-04-13
Reactive programming
like youtube subscription
Classical programming
like google or youtube search
Where is problem (classical array approach)?
Reactive way
Another problem
Callback hell - aka “the flying V”
Promises provide a cleaner solution
We can compare Rx to promise.
However promises has 2 problems:
- guaranteed future
- single value
ReactiveX is a combination of the best ideas from the
- Observer pattern
- Iterator pattern,
- and functional programming
It's mainly programming with event streams.
What is an event stream?
It's a sequence of events happening over time.
eg. interval, promise, data change, form change
How to define it?
Create interval:
The functional style of Rx made the code look more declarative than imperative.
no if, no for-loop
Calorie calculator code:
