RxJS - Simple map function - Coding Blast - www.codingblast.com

rxjs-simple-map.ts

import {Observable} from 'rxjs';

let source = Observable
    .interval(100) // interval starts from 0
    .take(5) // take first 5
    .map(n => n * 2); // multiply each item

source.subscribe((value) => {
    console.log('in next. Value: ', value);
});