A development model structured around asynchronous data streams
Normal Code
let a = 1;
let b = 2;
let c = a + b; // c = 3
a = 5; //What is c?
Reactive Code
let a = new BehaviorSubject(1);
let b = new BehaviorSubject(2);
let c = combineLatest(a, b).pipe(map( ([x, y]) => x + y));
c.subscribe(console.log);
b.next(20)
a.next(20)
setTimeout(()=>{
a.next(5)
}, 2000)
setTimeout(()=>{
b.next(5)
}, 4000)
