What is blockchain? with examples

Shakil Khan — Thu, 12 Jan 2023 08:51:45 +0000

Blockchain is a decentralized, digital ledger that records transactions across a network of computers. It is a secure and transparent way to record and verify transactions without the need for a central authority or intermediary.

Examples of blockchain technology include:

Bitcoin: The first and most well-known use of blockchain technology is the digital currency, Bitcoin. It uses blockchain to record and verifies all transactions on the network.
Ethereum: Another digital currency, Ethereum, uses blockchain to create smart contracts that automatically execute when certain conditions are met.
Supply Chain Management: Companies are using blockchain to track the movement of goods and materials in the supply chain. This allows for more transparency and efficiency in the supply chain process.
Healthcare: Blockchain is being used in the healthcare industry to securely store and share patient data. This allows for more efficient and secure data sharing among healthcare providers.
Voting: Blockchain technology is being used in electronic voting systems to create a secure and transparent way to record and verify votes.
Real estate: Blockchain can be used for property title registration, recording and tracking mortgages and deeds, and even property and tenant management.

JavaScript nested object destructuring

Shakil Khan — Fri, 12 Feb 2021 07:09:03 +0000

Objects are commonly used in JavaScript, if you are a React, Vue, or Angular developer then you may have a good relation with objects because they are heavily used in those frameworks, in this article I will show you how you can use JavaScript object efficiently.

const info = {
name: "Shakil Khan",
email: "example@gmail.com",
address: {
country: {name: "Pakistan", religion:"Islam"},
line1: "Malakand Batkhela",
line2: "City Batkhela"
}
}

in up code, as you can see we have a JavaScript object that has different keys name, email, address now inside the address we have a country key which also has a new object and it has two keys name and religion in simple words info object has nested objects, Now how we can access data from info object there are couple ways to access data from any JavaScript object.

const {name, email, address} = info;
const {country, line, line2} = address;
const {name, religion} = country;

in up code, we have destructured keys from info object which are name, email, and address, and further, we destructed address object and finally, we have destructured country object that is fine but have a short way and that is below

const {name, email, address: {country: {name, religion}, line1, line2}} = info;

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What is blockchain? with examples

Examples of blockchain technology include:

JavaScript nested object destructuring