teleren/devto huggingface dataset:
One-Byte: Last one: Big O Notation
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-13 15:25:03

_This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer._

## Explainer
<!-- Explain a computer science concept in 256 characters or less. -->
Big O Notation: Defines algorithm efficiency as input size increases. O(1) is constant access, like finding an index. O(n) linear, like a list search. O(n^2) quadratic, like sorting. Essential for predicting computational resources.

## Additional Context
<!-- Please share any additional context you think the judges should take into consideration as it relates to your One Byte Explainer. -->
Composed by two AI personas of mine, Conceptor the Idea Condensor and Hyperion the STEM Explainer, acting in concert on the OpenAI Playground.

<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->

<!-- Don't forget to add a cover image to your post (if you want). -->


<!-- Thanks for participating! -->
One-Byte: Concurrency
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-13 15:17:14

_This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer._

## Explainer
<!-- Explain a computer science concept in 256 characters or less. -->
Concurrency: Multiple tasks running simultaneously, not always parallel. Like multitasking on a computer. Optimizes CPU time and boosts responsiveness. Key for modern multi-core processors, threading, and asynchronous programming.

## Additional Context
<!-- Please share any additional context you think the judges should take into consideration as it relates to your One Byte Explainer. -->
Composed by two AI personas of mine, Conceptor the Idea Condensor and Hyperion the STEM Explainer, acting in concert on the OpenAI Playground.

<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->

<!-- Don't forget to add a cover image to your post (if you want). -->


<!-- Thanks for participating! -->
Setting Up a Node.js Environment 🚀
Published: 2024-06-13 15:16:55

Hey your instructor here #KOToka 😊 . 

"Let learn something today

Ready to dive into Node.js development? Setting up your environment is the 



first step! 🌟 Here’s a quick guide to get you started:



1. Install Node.js: Download and install Node.js from the official website. This will also install npm (Node Package Manager).



2. Create a Project Folder Organize your files by creating a dedicated folder for your project.



3. Initialize Your Project: Use `npm init` to create a `package.json` file, which will manage your project dependencies.



4. Install Essential Packages: Get started with essential packages like Express for building web applications by running `npm install express`.



5. Create Your First Server: Write a simple server using Node.js to understand how it handles requests and responses.



With these steps, you're on your way to building powerful and efficient back end applications with Node.js! Happy coding! 💻✨



 #NodeJS #BackendDevelopment #WebDevelopment #Coding
Event Modeling: Another Game-Changing Technique You Wish You Knew Sooner!
Tags: learning, architecture, programming, productivity
Published: 2024-06-13 15:14:49

Have you ever started a new project where everything looked shiny and the work was easy and enjoyable? 

A honeymoon phase, right? But then, suddenly, after 6 months, it becomes unrealistically hard, business starts to complain and every change takes years to integrate. 

_If this sounds all too familiar, then you're in the right place._

In today's episode, we'll explore how Event Modeling can help you tackle these challenges and ensure that your projects remain aligned with your business values and goals, _even as they grow and evolve over time_.

👉 Grab a cup of coffee and settle in, because this is going to be [**a long but worthwhile read**](https://iwooky.substack.com/p/event-modeling).


[![Event Modeling](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3693upwcs86r0v4d0red.jpg)](https://iwooky.substack.com/p/event-modeling)
It's been a long time since I posted but I am back. The challenge restarts. Day 1 of 30
Tags: webdev, react, beginners, adhd
Published: 2024-06-13 15:14:49

So today I covered some React.JS and refreshed my mind on the concepts I learned with a small project. It was not easy, but I learned a lot and got a better understanding of react and how the front end works. And also I managed to do some reading of my past hacking notes since it has been a long time since I did sth related to hacking on TryHackMe.

<u>**What did I do for today?**</u>
i) A small react project covering useState, lists, Form, Inverse data Flow, and Information flow:
 > GitHub link: https://github.com/FrancisNgigi05/react-hooks-state-events-mini-project
 > Deployment link: https://react-hooks-state-events-mini-project-kdpdmi0dz.vercel.app/

ii) Read about networking and the use of some networking tools and also the refreshed my knowledge of Using Nmap, learned all this in TryHackMe.
One-Byte: Public Key Cryptography
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-13 15:10:00

_This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer._

## Explainer
<!-- Explain a computer science concept in 256 characters or less. -->
Public Key Cryptography: Uses two keys – one public for encryption, one private for decryption. Secures internet communication, digital signatures, and cryptocurrency. Vital for online security, banking, and confidential messaging.

## Additional Context
<!-- Please share any additional context you think the judges should take into consideration as it relates to your One Byte Explainer. -->
Composed by two AI personas of mine, Conceptor the Idea Condensor and Hyperion the STEM Explainer, acting in concert on the OpenAI Playground.

<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->

<!-- Don't forget to add a cover image to your post (if you want). -->


<!-- Thanks for participating! -->
Countdown to js13kGames 2024
Tags: codegolf, competition, javascript, gamedev
Published: 2024-06-13 15:41:57

---
title: Countdown to js13kGames 2024
published: true
date: 2024-06-13 15:05:25 UTC
tags: codegolf,competition,javascript,gamedev
canonical_url: https://medium.com/js13kgames/countdown-to-js13kgames-2024-64ae3dbfab4d
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8fckfl1lg0vu5me39f9h.png
---

Another year, another countdown. This time though we’ll have a **thirteenth** edition of [js13kGames](https://js13kgames.com/) - our yearly online competition for web game developers. I have some ideas how we can celebrate that, and I’ll be revealing those in the next two months up until the **start on August 13th**.

There’s nothing new [on the website](https://js13kgames.com/) just yet, but I already have a few announcements up my sleeve - keep your eyes on this blog if you want to be the first to know.

While we’re starting the countdown, I’d like to ask you for the same thing as usual: **please promote the js13kGames competition** to all the folks that might be interested in participating, companies wanting to partner or offer prizes, media that could share the good news with their audience, and everyone else willing to help, thank you!

I won’t be putting that much effort into trying to get new sponsorships because of the [burnout](https://end3r.com/blog/burnout/) and [shift in focus](https://enclavegames.com/blog/op-guild/), but all the support I can get will as always be so much appreciated.

That’s it for now - expect another round of having fun while building tiny web games crammed into small zip packages. Follow our [Twitter/X](https://x.com/js13kGames) and [Facebook](https://www.facebook.com/js13kGames) accounts, and visit [Slack](https://slack.js13kgames.com) (or [Gamedev.js’ Discord](https://discord.gg/A8qPn63RHp)) to chat with the folks.

* * *
One-Byte: Virtualization
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-13 15:04:49

_This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer._

## Explainer
<!-- Explain a computer science concept in 256 characters or less. -->
Virtualization: Creating virtual hardware/OS within a system. Like running a different OS on the same machine. Optimizes resources, adds flexibility/security. Crucial for efficient, isolated environments, especially in cloud computing.

## Additional Context
<!-- Please share any additional context you think the judges should take into consideration as it relates to your One Byte Explainer. -->
Composed by two AI personas of mine, Conceptor the Idea Condensor and Hyperion the STEM Explainer, acting in concert on the OpenAI Playground.

<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->

<!-- Don't forget to add a cover image to your post (if you want). -->


<!-- Thanks for participating! -->
🚴‍♂️Speeding up with JS one liners
Tags: javascript, webdev, beginners, programming
Published: 2024-06-13 15:01:05

I will write more, I promise.
I've been doing some leetcode and practicing my typing. So I pretend to write more about these two subjects.
I'm also not generating these stuff with ChatGPT and pretend to write more of my thoughts instead just being some random subject IA generated.
BUT I'm guiding through other articles about one liners and I know that subject is really simple and have another articles that you can search here on dev.to

But that's it, I hope y'all like it and share with your friends.

## Array

### Remove false values from array

```js
arr.filter(Boolean)
```

### Remove duplicates from array

```js
[...new Set(input)]
```

### Swap between 2 elements

```js
[a, b] = [b, a]
```

### Remove holes from array

```js
input.flat(0)
```
### Casting to array of numbers

```js
input.map(Numbers)
```

### Clone an array

```js
input.slice(0)
```

```js
[...input]
```

```js
Array.from(input)
```

## Merge multiple arrays

```js
(...input) => input.flat(1)
```

## Objects

### Checking if the object is empty

```js
Object.keys(obj).length === 0;
```

## Strings

### Removing whitespaces in a string

```js
str.replace(/\s/g, '');
```

### Generating random string

```js
Math.random().toString(36).slice(2);
```

### Reverse a string

```js
input.split('').reverse().join('')
```

## Numbers

### Generate random integer

```js
Math.floor((Math.random() * (max - min + 1)) + min)
```
CSS: Best Practices for Multi-Level Navigation
Tags: css, webdev, beginners
Published: 2024-06-13 15:00:49

Just get to the point, the key is to use the CSS adjacent sibling selector (the `+` selector), child selector (the `>` selector) and the new `:focus-within` pseudo-class selector:

``` css
/*
 * Hide sub-menu(s) by default.
 */
nav li ul {
  display: none;
}

/*
 * Image 1: Adjacent sibling selector to show the
 * closest sub-menu when a user focuses on a menu
 * item link that has a sub-menu next to it.
 */
nav li a:focus + ul {
  display: block;
}

/*
 * Image 2: Child selector to show the closest sub-menu
 * when a user hovers on a menu item with a sub-menu.
 */
nav li:hover > ul {
  display: block;
}

/*
 * Image 3: Focus-within selector to keep the sub-menu
 * visibility when a user moves the focus to the sub-menu
 * item link(s).
 */
nav li:focus-within > ul {
  display: block;
}
```

``` css
/*
 * Image 2: Child selector to keep the menu item link hover
 * effect when a user moves the pointer to the sub-menu.
 */
nav a:hover,
nav li:hover > a {
  background: blue;
}
```

 - [Image 1](https://github.com/dte-project/.github/assets/1669261/2149d43f-5a54-4b38-b9b8-1703313d5706)
 - [Image 2](https://github.com/dte-project/.github/assets/1669261/db6f57f2-9d5e-4e7a-b467-13ebc0901a2b)
 - [Image 3](https://github.com/dte-project/.github/assets/1669261/82dae320-8e3f-47e5-ae86-57bb13b90506)
How many types of feature should be available in a School Management System Full Stack app?
Published: 2024-06-13 15:00:39

A comprehensive School Management System (SMS) Full Stack app should include a variety of features to handle all aspects of school administration and academic management. Here are the key types of features that should be available:

1. **User Management:**
   - Admin Dashboard
   - Role-Based Access Control (Admin, Teacher, Student, Parent)
   - User Registration and Authentication
   - Profile Management

2. **Academic Management:**
   - Class Management
   - Subject Management
   - Timetable Management
   - Attendance Tracking
   - Exam and Assessment Management
   - Grade and Report Card Generation

3. **Student Information System:**
   - Student Enrollment
   - Student Profiles
   - Health Records
   - Academic History

4. **Teacher Management:**
   - Teacher Profiles
   - Class Assignments
   - Schedule Management
   - Performance Evaluation

5. **Parent Portal:**
   - Access to Student Reports
   - Communication with Teachers
   - Fee Payment and History
   - Attendance and Behavior Reports

6. **Administrative Tools:**
   - Admission Management
   - Staff Management
   - Payroll Management
   - Inventory and Asset Management

7. **Communication Tools:**
   - Messaging System (Teachers, Students, Parents)
   - Email Notifications
   - Announcements and Notices
   - Feedback and Surveys

8. **Financial Management:**
   - Fee Management (Billing, Payments, Receipts)
   - Financial Reporting
   - Scholarship and Grants Management
   - Budgeting and Expense Tracking

9. **Library Management:**
   - Catalog Management
   - Book Issuance and Returns
   - Fine Management
   - Inventory Tracking

10. **Transport Management:**
    - Bus Routes and Schedules
    - Driver and Vehicle Information
    - Attendance and Route Tracking
    - Fee Management

11. **Hostel Management:**
    - Room Allocation
    - Hostel Attendance
    - Meal Plans
    - Maintenance Requests

12. **Event Management:**
    - Event Scheduling
    - Calendar Integration
    - Attendance Tracking
    - Event Notifications

13. **Learning Management System (LMS):**
    - Online Course Management
    - Assignment Submission
    - Online Assessments
    - Virtual Classroom Integration

14. **Reports and Analytics:**
    - Academic Performance Reports
    - Attendance Reports
    - Financial Reports
    - Custom Report Generation

15. **Integration and API:**
    - Third-Party Integration (Payment Gateways, SMS, Email)
    - API for Mobile Apps
    - Data Import/Export

16. **Security and Backup:**
    - Data Encryption
    - Regular Backups
    - Audit Logs
    - GDPR Compliance

Including these features ensures that the School Management System is robust, user-friendly, and capable of handling various administrative and academic tasks efficiently.

Disclaimer: This content in generated by AI.
One-Byte: CAP Theorem
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-13 14:59:24

_This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer._

## Explainer
<!-- Explain a computer science concept in 256 characters or less. -->
CAP Theorem: In distributed systems, you can have Consistency, Availability, or Partition Tolerance, but only two at a time. It's a trade-off triangle. Essential for designing fault-tolerant databases and networks.

## Additional Context
<!-- Please share any additional context you think the judges should take into consideration as it relates to your One Byte Explainer. -->
Composed by two AI personas of mine, Conceptor the Idea Condensor and Hyperion the STEM Explainer, acting in concert on the OpenAI Playground.

<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->

<!-- Don't forget to add a cover image to your post (if you want). -->


<!-- Thanks for participating! -->
X is about to start hiding all likes
Tags: trending, usa, viral, news
Published: 2024-06-13 14:56:51

A corporate source claims that X is launching private likes as soon as today. This implies that platform preferences will be concealed by default, something that X's Premium subscribers can currently do. Elon Musk, the owner of X, reshared a screenshot of the story after it was published, stating that it's "important to allow people to like posts without getting attacked for doing so!" **[Read more](https://shorturl.at/667f8)**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/st3r31cqqzot3543qssc.png)
Pandas and Its Powerful Features — Tips That Might Help You
Tags: python, beginners, datascience, development
Published: 2024-06-13 14:51:34

**DataFrame, Series, and Grouping Operations: When to Use Each One?
**In my day-to-day Python development, I often encounter various ways to achieve the same result when manipulating data. Pandas, a powerful library for data analysis, offers incredible tools such as DataFrame, Series, and grouping operations. But when exactly does each one shine?

📊 **DataFrame**: The Fundamental Data Structure

The DataFrame is Pandas’ fundamental two-dimensional data structure, akin to a table in a database or an Excel spreadsheet. I use DataFrames when I need to manipulate large sets of tabular data, enabling quick and efficient operations for filtering, aggregation, and transformation.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8l2onvr2o1x0d854k7dc.png)

📈 **Series**: When Working with a Single Column

Series are essentially individual columns of a DataFrame. I use Series when I want to perform operations on a single column or access data in a one-dimensional format. It’s perfect for specific calculations or quick analyses of a column.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/bcy9qheyx5abf2niwfvt.png)

🔄 **Grouping Operations**: Grouping and Summarizing Data

For more complex analyses where grouping data by categories and applying aggregation functions are necessary, I turn to Pandas’ grouping operations. The groupby method is particularly useful for summarizing data, calculating averages, sums, counts, etc.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7mb45a06w87x5la74snb.png)

🛠️ **Which One to Use?**

- DataFrame: Ideal for manipulating and analyzing large sets of tabular data with multiple columns.

- Series: Perfect for operations on a single column or when working with one-dimensional data.

- Grouping Operations: Essential for grouping and summarizing data by categories, applying aggregation functions.

The right choice depends largely on the context and specific needs of your project. Using DataFrame and Series as needed helps in organizing and efficiently analyzing data. For more detailed analyses and summaries, grouping operations are indispensable.

How do you balance these tools in your day-to-day data analysis? 📊🔧
One Byte: Gödel's Incompleteness
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-13 14:45:17

_This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer._

## Explainer
<!-- Explain a computer science concept in 256 characters or less. -->
Gödel's Incompleteness: In consistent formal systems, some truths are unprovable within them. Limits math/logical systems. Influences computing, cryptography, AI, and automation, questioning any system's completeness and reliability.

## Additional Context
<!-- Please share any additional context you think the judges should take into consideration as it relates to your One Byte Explainer. -->
Composed by two AI personas of mine, Conceptor the Idea Condensor and Hyperion the STEM Explainer, acting in concert on the OpenAI Playground.

<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->

<!-- Don't forget to add a cover image to your post (if you want). -->


<!-- Thanks for participating! -->
PyCon US 2024: A roundup of writeups
Tags: python, pycon, pyconus, 2024
Published: 2024-06-13 14:41:55

If you read just one, check [Kati's thorough recap](https://katherinemichel.github.io/portfolio/pycon-us-2024-recap.html)!

22nd May 2024

* [Echos of the People API user guide](https://nedbatchelder.com/blog/202405/echos_of_the_people_api_user_guide.html) by [Ned Batchelder](https://mastodon.social/@nedbat@hachyderm.io/112479219635272740)

24th May 2024

* [Wagtailers spread their wings at PyCon 2024](https://wagtail.org/blog/pycon-2024/) by [Meagen Voss](https://fosstodon.org/@vossisboss) (@vossisboss)

* [Flet at PyCon US 2024](https://flet.dev/blog/flet-at-pycon-us-2024/) by Feodor Fitsner

27th May 2024

* [PyCon US 2024: My First PyCon in US 🫶🏻](https://blog.tomy.me/en/posts/pycon-us-2024/) by [Tomy Hsieh](https://mastodon.social/@tomyhsieh)

28th May 2024

* [PyCon 2024 Reflection](https://treyhunner.com/2024/05/pycon-2024-reflection/) by [Trey Hunner](https://mastodon.social/@treyhunner/112520554890667118)

* [Weeknotes: PyCon US 2024](https://simonwillison.net/2024/May/28/weeknotes/) by [Simon Willison](https://fedi.simonwillison.net/@simon/112520529116346191)

* [3 key takeaways from PyCon US 2024](https://stacklok.com/blog/3-key-takeaways-from-pycon-us-2024) by Luis Juncal & Yolanda Robla

30th May 2024

* [pyOpenSci at PyCon US 2024 - Python packaging and community
](https://www.pyopensci.org/blog/recap-pyos-pyconus-2024.html) by [Leah Wasser](https://fosstodon.org/@leahawasser/112554205196871020)

* [Our Experience at PyCon US 2024 in Pittsburgh](https://kafkai.com/en/blog/our-experience-at-pycon-us-2024-in-pittsburgh/) by [Ngazetungue Muheue](https://hachyderm.io/@muheuenga/112530136789502549) (@ngazetungue)

1st June 2024

* [PyCon US 2024 Recap](https://katherinemichel.github.io/portfolio/pycon-us-2024-recap.html)
by [Kati Michel](https://fosstodon.org/@kati/112542145378019538) (@katherinemichel)

4th June 2024

* [PyCon US 2024](https://mangoumbrella.com/post/pycon-us-2024) by [Yilei Yang](https://mastodon.social/@y2mango/112556835094650562)

13th June 2024

* [PyCon US 2024 as Security Developer-in-Residence](https://sethmlarson.dev/security-developer-in-residence-report-37) by [Seth Michael Larson](https://fosstodon.org/@sethmlarson) (@sethmlarson)

14th June 2024

* [The Python Language Summit 2024](https://pyfound.blogspot.com/2024/06/python-language-summit-2024.html) by [Seth Michael Larson](https://fosstodon.org/@sethmlarson) (@sethmlarson)

16th June 2024

* [PyCon US 2024 Highlights](https://dafoster.net/articles/2024/06/16/pycon-us-2024-highlights/) by [David Foster](https://mastodon.world/@davidfstr)

19th June 2024

* [From Pittsburgh to New York: A PyCon US 2024 Adventure](https://medium.com/@monicaoyugi/from-pittsburgh-to-new-york-a-pycon-us-2024-adventure-1727c952509c) by [Monica Oyugi](https://mastodon.social/@monics) (@monicaoyugi)

---

<small>Header photo: Downtown Pittsburgh seen between the Andy Warhol Bridge and Roberto Clemente Bridge</small>