Promise https://medium.com/javascript-scene/master-the-javascript-interview-what-is-a-promise-27fc71e77261 https://youtu.be/DHvZLI7Db8E - web dev simplified - JavaScript Promises In 10 Minutes A promise is an object which can be returned synchronously from an asynchronous function. It will be in one of 3 possible states: Fulfilled: onFulfilled() will be called (e.g., resolve() was called) Rejected: onRejected() will be called (e.g., reject() was called)

FreeCodeCamp tuto (scrimba): https://scrimba.com/learn/learnreact ReactDOM and JSX react virtual dom: https://youtu.be/BYbgopx44vo https://youtu.be/RquK3TImY9U Virtual dom makes react work faster. It tracks where the change took place and updates only that part.

What is the advantage of using sudo apt-get autoremove over a cleaner app? https://askubuntu.com/questions/527410/what-is-the-advantage-of-using-sudo-apt-get-autoremove-over-a-cleaner-app Whenever you install an application (using apt-get) the system will also install the software that this application depends on. It is common in Ubuntu/Linux that applications share the same libraries. When you remove the application the dependency will stay on your system. So apt-get autoremove will remove those dependencies that were installed with applications and are no longer used by anything else on the system. apt and apt-get https://askubuntu.com/questions/445384/what-is-the-difference-between-apt-and-apt-get

centering https://css-tricks.com/centering-css-complete-guide/

What Is A REST API - Redhat https://www.redhat.com/en/topics/api/what-is-a-rest-api - IBM Cloud https://www.youtube.com/watch?v=lsMQRaeKNDk - NordicAPI https://nordicapis.com/all-you-need-to-know-about-rest-api-design/ API An API is a set of definitions and protocols for building and integrating application software. It’s sometimes referred to as a contract between an information provider and an information user—establishing the content required from the consumer (the call) and the content required by the producer (the response).

Breadth First Search ~ https://www.techiedelight.com/breadth-first-search/ Depth First Search ~ https://www.techiedelight.com/depth-first-search/

Java Set https://www.geeksforgeeks.org/set-in-java/ Unordered collection of objects in which duplicate values cannot be stored. import java.util.*; public class SetExample{ public static void main(String[] args)

MVC pattern Traversy Media https://www.youtube.com/watch?v=pCvZtjoRq1I GeeksForGeeks https://www.geeksforgeeks.org/mvc-design-pattern/ MVC = Model View Controller The MVC design pattern specifies that an application consists of a data model, presentation information, and control information. The pattern requires that each of these should be separated into different objects.

Array-String Linked-List Stacks-Queues Trees Recursion All Array-String Duplicate Zeros input: [1,0,2,3,0,4,5,0]

fcc-eli5 Encapsulation Say we have a program. It has a few logically different objects which communicate with each other — according to the rules defined in the program. Encapsulation is achieved when each object keeps its state private, inside a class. Other objects don’t have direct access to this state. Instead, they can only call a list of public functions — called methods. So, the object manages its own state via methods — and no other class can touch it unless explicitly allowed. If you want to communicate with the object, you should use the methods provided. But (by default), you can’t change the state. Let’s say we’re building a tiny Sims game. There are people and there is a cat. They communicate with each other. We want to apply encapsulation, so we encapsulate all “cat” logic into a Cat class. It may look like this: