Python f-strings or formatted strings are new way of formatting strings introduced in Python 3.6 under PEP-498. It’s also called literal string interpolation. They provide a better way to format strings and make debugging easier too. What are f-strings? Strings in Python are usually enclosed in “ ” (double quotes) or ‘ ‘ ( single …
Before jumping into getter and setter. There are two kinds of object properties in JavaScript: data properties and accessor property Data property: Example of data property, Accessor property: Accessor properties are functions that execute on getting and setting a value of an object. Accessors are useful when some operations are needed to be performed automatically …
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Before getting into destructuring, lets have a quick recap on arrays and objects. const emp = { name: “Anna”, id: “101”, }; const emp = [“Anna”,”Tina”,”Tim”]; Destructuring introduced in ES6 allows us to unpack elements in an array or elements. It extracts multiple properties, items and values from an array or object into …
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An object is an entity which has properties and types. It is a complicated datatype where it can store various data type. In JavaScript, objects are reference values. To clone objects we cannot use assignment operator (=). Using assignment operator (=) we are creating only an alias for existing object. What is Shallow copy? Shallow …
A function is a reusable piece of code introduced to avoid repetitive code and improve code readability and quality. In Javascript, functions are first-class citizens. Here we can take a function as an argument or return a function. This ability to accept and return a function makes it first class citizens in JavaScript. Higher order …
ES6 has some great features that makes working with parameters and arrays easy. JavaScript uses three dots ( … ) for both the rest and spread operators. The main difference between these two operators is that rest operator collects a set of elements and stores them into a single array and spread operator expands an …
Arrow functions expression is an alternative to traditional function expression. They are similar to lambda functions in python. These functions are often used in passing a function as a parameter to higher order functions. It is one of the features introduced in ES6. The function , Can be written as Syntax: myFunction – name of …
In our previous article we have seen introduction about closure . Creating closure inside loops is bit more complicated as it creates undesirable outcomes. Example: Expected Output: i value is 0 i value is 1 i value is 2 Actual Output: i value is 3 i value is 3 i value is 3 This problem …
The closure is an important concept in functional programming. Closure means that an inner function always has access to the vars and lets of outer function, even after the function has returned. It is a form of lexical scoping. A closure is the combination of a function bundled together (enclosed) with references to its surrounding …
Async/await is an extension of promise. We use async keyword with a function to represent that the function is asynchronous. The async function returns a promise. It is also possible to use await keyword inside a async function. Javascript async keyword: Syntax: name – name of function parameter- parameter that are passed Example: Output: Async function. …