teleren/devto huggingface dataset:
Backing Services - The Twelve Factor App Methodology
Tags: beginners, tutorial, cloud, architecture
Published: 2024-01-11 08:00:00

## Treat backing services as attached resources

Welcome back to our exploration of the Twelve Factors in Software Development. In this segment, we'll unravel Factor 4: Backing Services. Backing services include databases, message queues, caching systems, and other external resources that your application relies on.

## Backing Services: Treat Them as Attached Resources

The Backing Services factor emphasizes the importance of treating backing services as attached resources. This means your application should be designed to connect to these services as if they were local components, regardless of whether they run in the same environment or are provided as third-party services.

### Why It Matters

In modern application architecture, it's common to use external services for essential functionalities like data storage, messaging, and caching. By treating these services as attached resources, you decouple your application from the specifics of the service implementation. This enhances flexibility, scalability, and maintainability.

### How to Implement

Use configuration and environment variables to abstract the details of backing services. The idea is to make it easy to switch between different service providers or configurations without modifying your code. For example, if your application relies on a database, specify its connection details through environment variables.

```javascript
// Database connection using environment variables
const dbConnection = process.env.DATABASE_CONNECTION_STRING;
```

### Example in Action

Consider a web application that uses a cloud-based database service. Instead of hardcoding the database connection details in your code, configure them as environment variables. This way, whether your application is running locally or in a cloud environment, the necessary connection details are easily adjustable.

```bash
# Set the database connection string as an environment variable
export DATABASE_CONNECTION_STRING="your_actual_connection_string"

# Run your application
node app.js
```

Resources can be attached to and detached from deploys at will. For example, if the app’s database is misbehaving due to a hardware issue, the app’s administrator might spin up a new database server restored from a recent backup. The current production database could be detached, and the new database attached – all without any code changes.

By following the Backing Services factor, you ensure that your application is versatile and can seamlessly adapt to different environments and service providers.

Stay tuned for Factor 5: Build, release, run, where we'll explore the importance of a consistent and repeatable build process for your application.
Which Chain Abstraction Track Will You Hack To Win Over $15,000 in Prizes?
Tags: hackathon, web3, blockchain, accountabstraction
Published: 2024-01-11 07:49:33

January is the month to hack account and chain abstraction at [Abstracting.org](https://abstracting.org/)! With 7 tracks dishing out 15k+ in prizes there's tons of opportunity to explore. Get inspired with demos, hands on at workshops, and support at office hours throughout the month.

Chain abstraction breaks down barriers between different blockchain networks for seamless interoperability. Meanwhile, account abstraction reimagines user experiences, offering a more intuitive and flexible way to manage digital identities and assets. 

For some abstraction examples; imagine defi protocols unlocking liquidity and opportunities across chains 💦 smoother onboarding than web2 with better security than oauth 🔏 or funding trial accounts that can only interact with your dApp 🤯 

Web3 natives are already familiar with the hassle of hopping networks for scalability and juggling multiple accounts for security. Abstraction offers a convenient alternative where you can access all of your assets at once, without the hassle of bridging.

If it's your first time hearing terms like sub accounts, delegate actions, and meta transactions; they enable tangible experiences like digital loyalty programs 🎫 commerce at festivals with bad internet 🎉 and programable time shares 😎

Near Protocol enables all this abstraction with a flexible account model, allowing for granular access control. Every account is it's own smart contract and every contract is an account. It's possible to specify account level access to any function call... Including the ability to add and remove seed phrases for full access to an account, making it possible to securely trade an entire portfolio!

Hyped?! Hit [Abstracting.org](https://abstracting.org/) for more about abstracting with Near Protocol, event registration, and hack ideas from sponsors like Mintbase, Potlock, and Keypom. There's a [GPT agent stuffed with relevant tech docs](https://oneai.com/~near-abstraction/share/cKkkXm) and [telegram chat](https://nearbuilders.com/builddao) where you can form teams with 400+ builders.
best watches for men in uk| watches for men|Watch Brands for Men | cartier watch men
Published: 2024-01-11 07:47:20


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Visualizing Crime in Los Angeles on a Map using Geopandas.
Published: 2024-01-11 07:45:12

One of the best ways to present data is visually and numbers by themselves can overwhelm people.

GeoPandas is an open-source project to add support for geographic data to pandas objects. It currently implements Geoseries and GeoDataFrame types which are subclasses of pandas.series and pandas.DataFrame( stores geometry columns and perform spatials operations) respectively.
GeoDataFrame is a combination of pandas.Series with traditional data (numerical,boolean,text) and geopandas.
GeoSeries with geometries, with geometries (points,polygons etc).
GeoPandas objects can act on shapely geometry objects and perform geometric operations.
Understanding JavaScript Variables: const vs let vs var
Tags: frontend, javascript
Published: 2024-01-11 07:42:06

In this post, we will delve into the distinctions between const, let, and var, exploring their scopes, hoisting mechanisms, and rules regarding reassignment.

**Scope**

- var is function-scoped, meaning it is only accessible within the function it is declared.
- let and const are block-scoped, meaning they are only accessible within the block (enclosed by curly braces) where they are defined.

**Hoisting**

- Variables declared with var are hoisted to the top of their scope, which means they can be used before they are declared. However, the value assigned to them is not hoisted.
- Variables declared with let and const are also hoisted, but they are not initialized until the point in the code where they are declared. Attempting to access them before the declaration results in a ReferenceError.

**Reassignment**

- Variables declared with const cannot be reassigned after they are initialized. They are meant for constant values.
- Variables declared with let can be reassigned.
- Variables declared with var can also be reassigned.
Add local git repository submodule
Tags: git
Published: 2024-01-11 07:41:32

When there are a submodule inside the folder and it is not a remote repository.
```sh
.
├── submodule
│   └── submodule.md
└── test.md
```

Inside this root directory, there are a submodule repo.
You can add it by
```sh
git submodule add git:submodule submodule             
```

Then `.gitmodules` will be created at root directory, and here is the content

```sh
[submodule "submodule"]
	path = submodule
	url = git:submodule
```
Save memorable moments with Art Stories Maker
Tags: data, beginners, tutorial
Published: 2024-01-11 07:33:06

Every photo is an emotion, and with the Art Stories Maker app, we can turn them into stylish works of art. No need to spend hours diligently designing passionate photos, now just a few simple steps with the app will help you have attractive stories.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/w1yak5yvzrugor543he1.jpg)
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Published: 2024-01-11 07:32:23

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New Pansari Pakistan first online Pansar store and Dawakhana.
Published: 2024-01-11 07:20:22

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¿Escuchar música en Spotify tiene anuncios?
Tags: spotify, music, appwritehack
Published: 2024-01-11 07:11:53

Si escuchas música en Spotify, por supuesto que habrá anuncios, pero si descargas Spotify Premium APK, no habrá anuncios, no solo eso, sino que habrá millones de canciones gratis para que disfrutes. Si conoce una aplicación mejor, hágamelo saber.
The Great Veggie Case of Greenburg
Tags: storytwister, gpt, openai, examplestory
Published: 2024-01-11 07:11:21


In the quaint town of Greenburg, a unique legal battle unfolded - not over gold or gems, but something far juicier: vegetables!

Mia Carrot and Simon Spinach, a spirited couple, championed for their daughter, Little Lentil, to have vegan meals in daycare. But alas, Greenburg Municipality, led by Mayor Bean, wasn't so green-minded.

"Our daughter deserves the best – and that's veggies!" declared Mia, brandishing a giant carrot like a sword. Simon, clutching a spinach quiche, nodded vigorously.

The daycare, also known as 'The Meat Club', stood firm with their meat and potatoes. "Veggies? What's next? Art-packed lunches?!" exclaimed Ms. Bacon, the daycare head.

As the court session began, everyone was on the edge of their seats. Mia and Simon, donned in cabbage leaves and artichoke hats, presented their case. On the other side, Mayor Bean and Ms. Bacon, armed with sausages and meatballs.

Judge Pickle, a stern cob of corn with glasses, led the proceedings firmly. "We must find a solution for all - plant lovers and meat eaters alike!" he declared.

The verdict was a victory for veggies! Little Lentil could now enjoy her vegan treats at daycare. And as a compromise, 'The Meat Club' was allowed to keep their Friday meatball feast.

Thus, Greenburg became known as the town where veggies and meat lived in harmony. And if they haven't been eaten, they might still be growing there today.

> This text and image is created using the GPT **Story Twister** This is an example of output from the GPT "Story Twister", you can try it out yourself here: [Story Twister](https://chat.openai.com/g/g-mBiNy6U9S-story-twister)
Python for Beginners - Introduction
Tags: python, ai, coding, programming
Published: 2024-01-11 07:11:18

Have you come across programming languages? Have you also come across people telling python is one of the easiest language to start with? Let’s go through!

## Who invented Python?
Python was designed by Guido van Rossum in 1991.


## Why is it so popular and a easy language to learn?

Python provides a considerate amount of built-in libraries to ease out on tasks. Its simplicity is also one of the top reasons why it’s considered good for beginners. 
Its libraries and frameworks are majorly used in machine learning projects and tasks which also is a growing field right now. 

## What if I am from a non technical background, can I still manage to learn?

Absolutely yes! As I mentioned, Python has its own simplicity and nature to write the code with. Its simple and readable syntax makes it easy for everyone to code and ease their tasks.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8drde3z9s3ouh4gbuhta.jpeg)


## What are some of the applications built using Python?
Some of the popular and trending applications which are built using python are:

1. Netflix
2. Uber
3. Spotify
4. Instacart
5. Instagram
6. Pinterest and many more! 

Interesting right?

Let’s now deep dive into what we’ll be covering in this series. I’ll also be posting exercises at the end of each part for you to practice. 


##Part 1:
Introduction to Basic concepts of Python, setting up the python environment and basic python syntax.

##Part 2:
Looping statements and control statements

##Part 3:
Python lists and Arrays

##Part 4:

Methods/Functions

##Part 5:
OOPS Concept

##Part 6:
File Handling

##Part 7: 
Python Modules


Theoretical exercise for today’s part is:

##Find out why Python is called as Python and answer in the comments below ☺️


Link for Part 1: https://dev.to/tina_popli/python-for-beginners-part-1-984
Java I/O: Learn How to Read and Write Data with Java I/O Streams
Published: 2024-01-11 07:09:24

Java I/O streams are essential for handling input and output operations in Java programming. Our tutorials will teach you how to use various I/O streams, such as character-oriented streams (Reader and Writer) and byte-oriented streams (InputStream and OutputStream). Learn how to read and write data efficiently in Java with [Javaprogramer.com](https://javaprogramer.com)!

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1ycz5nobk66mgfn6e8u2.png)
Exploring Function Behavior in C#
Tags: csharp
Published: 2024-01-11 07:09:23

When working with C#, it is important to explore and understand the behavior of different functions. Functions play a crucial role in determining how our code executes and what outputs it produces. By exploring function behavior, we can uncover any potential issues or bugs that may arise.

One aspect of function behavior to consider is the return type. The return type of a function determines the type of data it will return when executed. It is important to ensure that the return type matches our expectations and is compatible with the rest of our code. Otherwise, we may encounter errors or unexpected results.

Another important consideration is the parameters of a function. Parameters are variables that we pass into a function and are used to perform specific operations. By exploring how parameters affect function behavior, we can ensure that our functions receive the necessary input to produce the desired output.

Additionally, we should also explore the scope of variables within a function. Variables declared inside a function are typically only accessible within that function. Understanding this behavior helps us avoid variable conflicts and ensures that our code executes as intended.

Lastly, we should also take time to explore how functions interact with each other. Functions can call other functions, pass values between them, and return values to each other. By understanding these interactions, we can design our code in a more modular and efficient manner.

Overall, exploring function behavior in C# is essential for writing reliable and effective code. By understanding the return type, parameters, scope, and interactions of functions, we can ensure that our code performs as expected and minimizes potential issues. So, take the time to dive deeper into the behavior of functions and enhance your programming skills in C#.
#DEVResolutions2024
Tags: devresolutions2024
Published: 2024-01-11 07:08:24



## Professional Goals:

1. **Goal:** Master React. Master the Stack.
2. **Action Steps:** Build Projects That Matter To Me.
3. **Timeline:** Work and accomplish in 2 Months.

## Personal Aspirations:

1. **Aspiration:** Manage free time well enough to write.
2. **Why it Matters:** writing relaxes the mind and body, and benefits someone else
3. **Support System:** build an audience of family that expects delivery week in week out

## DEV Community Contributions:

1. **Contribution Goal:** I want to build two open-source web-based projects in my country
2. **Collaboration Plans:** I plan to collaborate on solving a long-standing payments platform problem in Zimbabwe
3. **Measuring Impact:** I want to see how many people I can inspire to join these efforts in open source.
Understanding Perceptron. How does it work, without going into Mathematics
Published: 2024-01-11 06:59:11

## Understanding the Perceptron
The perceptron is like a decision-making algorithm. Imagine you want to know if someone will pass an exam. The perceptron takes information like IQ and study hours, gives each piece a 'weight' based on its importance, adds them up, and decides: 'Yes, they'll pass' or 'No, they won't.' It's like a smart helper that learns from mistakes and gets better at making these yes-or-no decisions over time

Let's see this with the help of a figure


![Perception First](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nlqak1l1xryyi2ifvkvd.png)

The red dot represents the student who failed the exam while the green one represents the one who passed.

Now what perceptron does is draw a line to separate this yes and no

This is what it does:

⭐. First, it will start a line (that will separate pass and fail) from some initial place

![Perceptron Image 1](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/g1362943bfu0jdyiue40.png)

⭐. From here the loop begins.

⭐. Choose a random point

![Perceptron Image 2](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/j5wi0a3l5fb4fr7v45r4.png)
⭐. It checks if that student is going to fail or pass. It does that by putting the coordinate of that point in the equation of the line.

`X * IQ + Y * studyHour`.

Now if the solution of the equation becomes positive it will pass otherwise it will fail

![Perceptron 3](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/uy8acpuofo2ez3217u8w.png)

⭐. Suppose it chooses this point

![Perceptron 4](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/whs915aj751cukwrc7s2.png)

The green point should lie in the positive part of the line (as it represents the pass) while the red one should lie in the negative part of the line.

Since the selected point is at the correct position we don't do anything and choose another point.

⭐.Now we choose this point


![Perceptron 5](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ifw9qs2g0dpftwi5d0sf.png)

This point is also in the correct position we don't do anything and choose another point.

⭐.Now we choose this point


![Perceptron 6](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dqb5dn8zm33gob0712t3.png)

Now this point lies on the wrong side and also putting the coordinate of this point in our line equation will produce a negative result. So we move our line such that this point lies in the negative part of the figure


![Perceptron 7](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/0486x6kygr4aevfeuind.png)

⭐.After following these steps repeatedly it will finally give a line like this

![Perception Final](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/fzjv7dxu5mk0kvxdsihi.png)

Now if we have a student with its IQ and study hours we just need to put that information in the equation of the line and it will tell us if the student is going to pass or fail
#DEVResolutions2024
Published: 2024-01-11 06:53:56

<!-- ✨ Feel free to customize this template to suit your needs—adjust the title, structure, and wording as you see fit! ✨ -->

## Professional Goals:

Happy 2024!

1a.My #DEVResolutions2024 is become a Top 1% Back end Developer 

2b.Get A Technical Writing Job

2a. Action Steps: I  am currently taking a  back end developer course on Udemy

2b. I am already prepared for this Job,Here is my Writing Portfolio clericcoder.hashnode.dev

3. Timeline: 6 months to achieve my Back end Mastery

## Personal Aspirations:

1. Aspiration: I am aspiring to work at Andela as a a Software Engineer

2. Why it Matters: This Aspiration is important to me because it would make me achieve my career Goals



## DEV Community Contributions:

1. Contribution Goal: I would contribute to the dev community by writing Articles based on my back end developer journey (my learning process)


2. Collaboration Plans: I am looking forward to collaborate with other Developer Community on Social Media (Twitter,Reddit).