종우의 컴퓨터 공간

What Is Promises? A promise in NodeJS is similar to a promise in real life. It is an assurance that something will be done. Promises is used to keep track of whether the asynchronous event has been executed or not and determines what happens after the event has occurred. It is an object having 3 states. What Are Three States In Promises? · Pending: Initial State, before the event has happened · ..

What Is Abstraction? Abstraction is the concept of object-oriented programming that "shows" only essential attributes and "hides" unnecessary information. The main purpose of abstraction is hiding the unncessary details from the users. Abstraction is selecting data from a larger pool to show only relevant details of the object to the user. It helps in reducing programming complexity and efforts...

Background To fully understand the concept of higher order function, you first have to understand what Functional Programming is and the concept of First-Class Functions. What Is Functional Programming? In most simple term, Functional Programming is a form of programming in which you pass functions as parameters to other functions and also return them as values. In functional programming, we thi..

What Is Encapsulation? Encapsulation is one of the fundamental concepts in object-oriented programming. It describes the idea of bundling(grouping) data and methods that work on that data within one unit such as classes in Java. This concept is also often used to hide the internal representation, or state, of an object from the outside. This is called information hiding. The general idea of this..

What Is Object Oriented Programming? Object-oriented programming is a computer programming model that organizes software design around objects rather than functions and logics. An object can be defined as a data field that has unique attributes and behavior. What Is The Structure of Object Oriented Programming? · Classes are user-defined data types that act as the blueprint for individual object..