JavaScript

Anonymous function

In JavaScript, an anonymous function is that type of function that has no name or we can say which is without any name. When we create an anonymous function, it is declared without any identifier.

implementations of anonymous functions

function is the one with no name, can be invoked immediately and can be used as an argument value in a normal function definition.

What a programming paradigm is?

The term refers to a style of p... They are a way to classify p. languages based on their features. There are lots of p. languages that are well-known but all of them need to follow some strategy when they are implemented. And that strategy is a paradigm.

What is programming paradigm?

Programming paradigm is an approach to solve problem using some programming language or also we can say it is a method to solve a problem using tools and techniques that are available to us following some approach.

side effect

A change of state of global variable

Functional programming

is the process of building software by - - - composing pure functions, avoiding shared state, mutable data, and side-effects. Functional programming is declarative rather than imperative, and application state flows through pure functions.

Pure function

A pure function is a function which: Given the same inputs, always returns the same output, and Has no side-effects Pure functions have lots of properties that are important in functional programming,

What is a function?

A function is a process which takes some input, called arguments, and produces some output called a return value.

Functions may serve the following purposes:

Mapping: function maps input values to output values. Procedures: A function may be called to perform a sequence of steps (procedure). I/O: Some functions exist to communicate with other parts of the system, such as the screen.