ES6 Methods in JavaScript

ES6 (ECMAScript 2015) introduced several new methods for working with arrays, strings, objects, and more. These methods enhance the functionality of JavaScript, making it more efficient and readable. Here’s a summary of some key ES6 methods:

1. Array Methods

Array.from(): Creates a new array from an array-like or iterable object.
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const str = 'hello';

const arr = Array.from(str); // ['h', 'e', 'l', 'l', 'o']

Array.of(): Creates a new array with the given arguments.
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const arr = Array.of(1, 2, 3); // [1, 2, 3]

Array.prototype.find(): Returns the first element in an array that satisfies the provided testing function.

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const arr = [5, 12, 8, 130, 44];

const found = arr.find(element => element > 10); // 12

Comprehensive Guide to JavaScript Array Methods: Manipulation, Access, and Iteration Techniques

 JavaScript provides a wide variety of array methods that make working with arrays more convenient and efficient. Here's an overview of the most commonly used JavaScript array methods:

1. Mutator Methods

These methods modify the array they are called on.

• push(element): Adds one or more elements to the end of an array and returns the new length.
• pop(): Removes the last element from an array and returns that element.
• shift(): Removes the first element from an array and returns that element.
• unshift(element): Adds one or more elements to the beginning of an array and returns the new length.
• splice(start, deleteCount, item1, item2, ...): Adds, removes, or replaces elements in an array. Returns an array of the removed elements.
• reverse(): Reverses the order of the elements in an array in place.
• sort(compareFunction): Sorts the elements of an array in place and returns the sorted array.
• fill(value, start, end): Fills all the elements from a start index to an end index with a static value.

How to convert a List of Strings to a Comma Separated String with Single Quotes In Java

You can convert a list of strings to a comma-separated string with single quotes around each element in Java by iterating through the list and constructing the desired string. Here's how you can do it:

Explain the 'CASE' expression in Oracle SQL statement

In Oracle SQL, the CASE expression is used to add conditional logic within a SQL statement. It allows you to perform different actions based on different conditions. The basic syntax of the CASE expression is:

Here's an example to demonstrate how to use the CASE expression:

Suppose we have a table named employees with columns employee_id, first_name, last_name, and salary. We want to create a new column called salary_category that categorizes employees based on their salary into three categories: "Low", "Medium", and "High".

Explain Disaggregation with Simple Example

Disaggregation simply means breaking down a whole into its smaller parts. It's like taking apart a Lego set to see the individual bricks. Here's a simple example to understand disaggregation:

Imagine you run a small bakery. At the end of the month, you see you made a profit of $1,000. That's great! But to understand how you got there, disaggregation can be helpful.

Without Disaggregation:

• You only know the total profit: $1,000

With Disaggregation:

1. Break Down Revenue:

   • You sold $2,000 worth of bread.
   • You sold $1,500 worth of cakes.
   • You sold $500 worth of cookies.
   • Total Revenue: $4,000

? and ! symbol in Angular

 In Angular, both ! and ? serve different purposes and have specific meanings.

1. !: This symbol is primarily used in Angular template expressions to indicate a non-null assertion. When you use ! after a property or expression, you're telling TypeScript that you're confident that the value won't be null or undefined. It's often used when you know for sure that a value exists, but TypeScript's static analysis cannot infer it.

How to set up a custom domain with Blogger?

Here's a step-by-step guide on how to set up a custom domain with Blogger:

Prerequisites:

• A Google account with a Blogger blog.
• A registered domain name (you can purchase one from domain registrars like Google Domains, Namecheap, GoDaddy, etc.).

Steps:

1. Access your Blogger dashboard: Go to https://www.blogger.com/ and sign in using your Google account.
2. Select your blog: On the left-hand side menu, click on the blog where you want to set up the custom domain.
3. Go to Settings: Click on the "Settings" option from the menu.
4. Access "Publishing": Under the "Settings" menu, locate the "Publishing" section.
5. Set up a custom domain: Click on the "Set up a custom domain" button.

Two Options for Connecting your Domain:

A. Using Google Domains:

• If you purchased your domain through Google Domains, you'll see an option to connect it directly.
• Click on "Continue with Google Domains" and follow the on-screen instructions. Google will handle the necessary DNS (Domain Name System) configuration steps.