JavaScript Advanced
- Callbacks
- Promises
- Observables
- Async/Await
https://www.academind.com/articles/javascript/callbacks-promises-observables-async-await/
http://thecodebarbarian.com/basic-functional-programming-with-async-await.html
http://blog.rangle.io/javascript-asynchronous-options-2016/
https://www.youtube.com/watch?v=jgWnccjXR4I
https://medium.com/@benlesh/rxjs-observable-interop-with-promises-and-async-await-bebb05306875
https://stackoverflow.com/questions/45300739/typescript-async-await-with-observable-or-promise
https://moduscreate.com/blog/observables-and-promises/
https://scotch.io/tutorials/javascript-promises-for-dummies
https://chariotsolutions.com/blog/post/angular2-observables-http-separating-services-components/
https://labs.encoded.io/2016/12/08/asyncawait-with-angular/
https://hackernoon.com/using-rxjs-to-handle-http-requests-what-ive-learned-4640aaf4646c
