teleren/devto huggingface dataset:
The Comprehensive Guide to Full Stack Solana Development with React, Anchor, Rust, and Phantom Wallet
Tags: solana, blockchain, solanafoundation
Published: 2024-02-28 19:45:28

Welcome to the complete guide on building a full stack Solana application using modern web development tools and blockchain technologies. This guide will walk you through the entire process, from setting up your development environment to deploying your application to the Solana blockchain.

**Prerequisites:**

1.Basic understanding of JavaScript and React.
2.Familiarity with Rust programming language.
3.Understanding of blockchain concepts.

**Tools and Technologies:**

> Node.js and npm
> Rust and Cargo
> Solana Command Line Tools (solana-cli)
> Anchor Framework
> React.js
> Phantom Wallet

**Step 1: Setup Development Environment**

Ensure you have the following tools installed on your system:

Node.js and npm
Rust and Cargo
Solana Command Line Tools (solana-cli)
Phantom Wallet Chrome Extension

**Step 2: Create a Solana Project**

Initialize a new Solana project using Anchor Framework:

```
$ mkdir my-solana-project
$ cd my-solana-project
$ anchor init my-solana-project

```
**Step 3: Implement Smart Contract (Program)**

Write your smart contract logic in Rust inside the programs directory. Define your instruction and state structs and implement your instruction methods. Build your program:

```
$ anchor build

```

**Step 4: Integrate Smart Contract with Frontend (React)**

Create a new React app and install necessary dependencies:

```
$ npx create-react-app my-solana-app
$ cd my-solana-app
$ npm install @solana/web3.js @solana/wallet-adapter-react @project-serum/sol-wallet-adapter

```
Implement the frontend components and logic to interact with Solana. Use the Solana wallet adapter to connect to the Phantom wallet.

**Step 5: Deploy Smart Contract**

Build and deploy your smart contract to the Solana blockchain:

```
$ anchor deploy
```


**Step 6: Connect Frontend to Smart Contract**

Configure the frontend to interact with the deployed smart contract. Use the Solana web3.js library to send transactions and call smart contract methods from the frontend.

**Step 7: Test and Debug**

Thoroughly test your application and debug any issues encountered during testing.

**Step 8: Publish and Deploy**

Optimize your application for production and publish your frontend code to a hosting service like Vercel or Netlify. Encourage users to connect their Phantom wallet and interact with your Solana application.

**Additional Tips:**

Follow best practices for security and efficiency.
Keep your dependencies updated.
Document your code and processes for future reference.
Stay updated with the latest developments in Solana ecosystem.
By following this guide, you'll be equipped to develop a professional-grade full stack Solana application using React, Anchor, Rust, and Phantom Wallet.
Redirect back, fallback location, and where it may fail
Tags: ruby, rails
Published: 2024-02-28 19:44:32

Redirect_back is a handy method that allows you to send back a user to the url that they accessed the action from. Fallback_location is a parameter in the method designed to provide a fallback URL in case the referrer is not available or cannot be determined. However, this is not a catch all for every situations, as it is very dependent on the request referrer.

---

A particular instance where I found it confusing that fallback didn't seem to be working was when I was destroying a record. For example, if we follow standard rails convention and tried to access a photo of id: 1 from a url called "website.com/photos/1", there would be a method defined in the controller as before_action where you might look to identify the photo id from params as such:

```
before_action :set_photo, only: %i[ show edit update destroy ]

...

def set_photo
   @photo = Photo.find(params[:id])
end
```

Now, if I were to use a button in "website.com/photos/1" to destroy the corresponding photo record and specified a redirect back in the destroy action, an ActiveRecord::RecordNotFound error would come up even if the fallback_location is specified. This is because the referrer is recognized as "website.com/photos/1", and the before_action would try to run the set_photo method to identify params[:id], :id being 1 which no longer exists. As per api.rubyonrails.org:

"The referrer information is pulled from the HTTP Referer (sic) header on the request. This is an optional header and its presence on the request is subject to browser security settings and user preferences. If the request is missing this header, the fallback_location will be used."

In our particular situation, this request header does exist (likely website.com/photos/1), albeit pointing to a record that no longer exists. Thus, the fallback is not considered since we do have a referrer, and we're instead met with the RecordNotFound error.

To deal with this RecordNotFound error, we could choose to add in a rescue for the RecordNotFound in a before_action to redirect to our fallback url, or alternatively conditionally check what our referrer is to situationally apply redirect_back. A simple example addition to our situation above could be to add the rescue into our set_photo method like this:

```
before_action :set_photo, only: %i[ show edit update destroy ]

...

def set_photo
   @photo = Photo.find(params[:id])
   rescue ActiveRecord::RecordNotFound => _
      redirect_to root_url
end
```

---

The point to clarify though is that there are situations like this where fallback location might not work like we'd want. Fallback location is still a great tool for situations like when a user tries to directly access an action by typing in a url, where the request referrer would be nil. However, it's important to know when/where these tools actually work and when/where they are not considered.
First-of-its-Kind in Uttar Pradesh: Shreyash Pandey Launches AI Influencer 'Adrika Jackson' Creates Buzz in Digital Media
Tags: ai, aiops, devops, discuss
Published: 2024-02-28 19:36:17

Social entrepreneur [Shreyash Pandey](https://en.wikialpha.org/wiki/Shreyash_Pandey) made history on February 26, 2024, by launching the first-ever Artificial Intelligence (AI) influencer '[Adrika Jackson](https://en.wikialpha.org/wiki/Adrika_Jackson)' in the state of Uttar Pradesh, sparking a new era in digital media.

A native of Gopalpur village in Uttar Pradesh, Shreyash Pandey initiated a fresh chapter with a unique perspective and vision. The unveiling took place on February 26, introducing 'Adrika Jackson' on social media platforms.

'[Adrika Jackson](https://instagram.com/adrikajackson)' is an AI influencer primarily making a mark in the realms of fashion and entertainment. In doing so, it introduces the people of Uttar Pradesh to a novel world of AI influence, teaching them a new way to interact with the latest trends and digital impact.

[Shreyash Pandey](https://instagram.com/shreyashpandeyofficial) expressed, "This is a new experiment for us, and we are here to forge a partnership with new digital enthusiasts. Adrika Jackson is an AI-based influencer leading us into a new realm of possibilities on social media platforms."

Launching such a digital influencer for the first time in Uttar Pradesh, Shreyash Pandey is ushering in a new era, where technology and entertainment converge. 'Adrika Jackson' not only establishes a significant presence in the fashion and entertainment sectors but also introduces the digital audience of Uttar Pradesh to a content-rich experience.

This new chapter in social media excitement, guided by Shreyash Pandey's vision, is setting the stage for a revolution. 'Adrika Jackson' stands as a pioneer, not only in fashion and entertainment in Uttar Pradesh but also in the larger world of digital influence, defining a new narrative for the region.

With this digital initiative, Uttar Pradesh is not only making strides in fashion and entertainment but also claiming a significant spot in the digital influence landscape. 'Adrika Jackson' has become a symbol of innovation, introducing a novel dimension to the world of digital media in the state.

This groundbreaking digital campaign is not just about fashion and entertainment but is elevating Uttar Pradesh to new heights in the realm of digital influence. 'Adrika Jackson' has not only made an impact in Uttar Pradesh but is also reshaping the narrative of digital influence on a broader scale.

With this new digital endeavor, Uttar Pradesh is entering a new era, where technology and entertainment blend seamlessly to create a unique and impactful digital experience. 'Adrika Jackson' is not merely an influencer; it's a digital trailblazer redefining the digital landscape in the state and beyond.
"NorCalAttorney: Navigating Legal Challenges in Northern California"
Published: 2024-02-28 19:17:33

In the vast and often complex landscape of legal matters, having a reliable and experienced attorney by your side can make all the difference. For those in Northern California, NorCalAttorney has emerged as a trusted partner in navigating the intricacies of the legal system.
Legal challenges can arise unexpectedly, ranging from personal injury claims to real estate disputes, criminal charges, or family law matters. In such situations, having a skilled attorney who understands the local legal landscape can be invaluable.
NorCalAttorney is a legal firm dedicated to serving the diverse needs of individuals and businesses across Northern California. With a team of experienced lawyers, they bring a wealth of knowledge and expertise to the table, ensuring that clients receive personalized and effective legal representation.
One of the standout features of [NorCalAttorney](https://norcalattorney.com/
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/bfau1mfv3h3lqyp5chvm.png)) is their commitment to client communication. They understand that legal processes can be overwhelming, and keeping clients informed and involved is a top priority. From the initial consultation to the resolution of the case, clients can expect clear and transparent communication at every step.
Whether you are facing a legal battle, need assistance with estate planning, or require guidance in a business matter, NorCalAttorney is equipped to handle a wide array of legal issues. Their diverse practice areas make them a go-to choice for individuals and businesses seeking comprehensive legal support.
Moreover, NorCalAttorney's familiarity with the Northern California legal landscape gives them a unique advantage. They understand the local nuances, judicial practices, and potential challenges that clients may face in the region. This insight allows them to tailor their approach to better serve the specific needs of their clients.
In addition to their legal expertise, NorCalAttorney places a strong emphasis on building lasting client relationships. They strive to create a comfortable and supportive environment, ensuring that clients feel confident and secure in their legal representation.
In conclusion, NorCalAttorney stands out as a reliable ally for those navigating legal challenges in Northern California. With a commitment to communication, a broad range of practice areas, and a deep understanding of the local legal landscape, they provide the guidance and representation needed to tackle legal issues effectively. When legal matters arise, NorCalAttorney is there to help you navigate the legal waters with confidence.
Exploring the Antigravity Library in Python
Tags: python, programming, beginners
Published: 2024-02-28 19:17:28

# Introduction

The Antigravity Library in Python is a fascinating tool that offers developers a unique way to explore gravity-defying concepts within their code. This chapter will delve into the Antigravity Library, discussing its purpose, features, and how to use it effectively in Python programming.

# Topics

- Overview of the Antigravity Library
- Understanding the `import antigravity` statement
- Exploring the `geohash()` function

# Overview of the Antigravity Library

The Antigravity Library is a tongue-in-cheek module included in Python's standard library, designed to entertain and inspire developers.

```python
import antigravity

# This statement imports the Antigravity Library and opens the xkcd comic on Python
```

# Understanding the `import antigravity` statement

The `import antigravity` statement loads the Antigravity Library into your Python environment, enabling access to its functions and features. Let's see an example:

```python
import antigravity

# Open the xkcd comic on Python
antigravity.webbrowser.open("https://xkcd.com/353/")
```

# Exploring the `geohash()` function

The `geohash()` function generates a geohash string representing a geographic location. Geohashes are used to encode geographical coordinates into a short string of letters and digits. Here's how to use it:

```python
import antigravity

# Generate geohash for latitude 37.7749 and longitude -122.4194 (San Francisco)
antigravity.geohash(latitude=37.7749, longitude=-122.4194, datedow=b"2024-02-27-10458.68")
```

Output:

```
37.233517 -122.466844
```

# Conclusion

The Antigravity Library in Python offers developers a whimsical journey into gravity-defying concepts and playful explorations of Python programming. While not intended for serious use, it serves as a delightful reminder of Python's creativity and sense of humor. Have fun experimenting with the Antigravity Library!
CRUD in GraphQL MongoDB
Tags: webdev, javascript, beginners, programming
Published: 2024-02-28 19:05:17

CRUD(Create, Read, Update, Delete) operations in GraphQL, MongoDB, and PostgreSQL (using pg-promise) based on the typical SQL `employees` table.

### GraphQL:

1. **Create (Mutation):**

```graphql
mutation {
  createEmployee(input: { name: "John Doe", department: "IT", hireDate: "2022-03-01" }) {
    id
    name
    department
    hireDate
  }
}
```

2. **Read (Query):**

```graphql
query {
  employees {
    id
    name
    department
    hireDate
  }
}
```

3. **Update (Mutation):**

```graphql
mutation {
  updateEmployee(id: "123", input: { name: "Updated Name" }) {
    id
    name
    department
    hireDate
  }
}
```

4. **Delete (Mutation):**

```graphql
mutation {
  deleteEmployee(id: "123") {
    id
    name
    department
    hireDate
  }
}
```

### MongoDB:

```javascript
// Assuming you have a MongoDB connection and a collection named 'employees'

// Create (Insert)
db.employees.insertOne({
  name: "John Doe",
  department: "IT",
  hireDate: new Date("2022-03-01")
});

// Read (Find)
const allEmployees = db.employees.find().toArray();

// Update (UpdateOne)
db.employees.updateOne(
  { _id: ObjectId("employee_id_here") },
  { $set: { name: "Updated Name" } }
);

// Delete (DeleteOne)
db.employees.deleteOne({ _id: ObjectId("employee_id_here") });
```

### PostgreSQL (pg-promise):

```javascript
// Assuming you have a pg-promise connection and a table named 'employees'

// Create (Insert)
const newEmployee = await db.one(
  'INSERT INTO employees(name, department, hire_date) VALUES($1, $2, $3) RETURNING *',
  ["John Doe", "IT", new Date("2022-03-01")]
);

// Read (Select)
const allEmployees = await db.any('SELECT * FROM employees');

// Update (Update)
const updatedEmployee = await db.one(
  'UPDATE employees SET name = $1 WHERE id = $2 RETURNING *',
  ["Updated Name", 123]
);

// Delete (Delete)
const deletedEmployee = await db.one(
  'DELETE FROM employees WHERE id = $1 RETURNING *',
  [123]
);
```

These examples demonstrate basic CRUD operations in GraphQL, MongoDB, and PostgreSQL. Adapt the queries and mutations based on your actual GraphQL schema and database schema. Additionally, ensure you have proper error handling and input validation in your actual implementation.
GraphQL, MongoDB, and PostgreSQL (pgsql)
Tags: mongodb, sql, pgsql, graphql
Published: 2024-02-28 19:02:49

GraphQL, MongoDB, and PostgreSQL (pgsql) using the given SQL query:

### GraphQL:

In GraphQL, the equivalent query might look like this:

```graphql
query {
  employees(where: { department: "IT" }, orderBy: { hireDate: "DESC" }, limit: 10) {
    id
    name
    // Include other fields as needed
  }
}
```

This is just an example, and the actual query structure would depend on your GraphQL schema and the way your server is set up.

### MongoDB:

In MongoDB, you would typically use the `find` method with `sort` and `limit`:

```javascript
db.employees.find({ department: "IT" }).sort({ hireDate: -1 }).limit(10);
```

This assumes that your MongoDB collection is named `employees`. Adjust the collection name and fields as needed.

### PostgreSQL (pg-promise library in Node.js):

In PostgreSQL with Node.js using the `pg-promise` library, the equivalent might be:

```javascript
const employees = await db.any(
  'SELECT * FROM employees WHERE department = $1 ORDER BY hire_date DESC LIMIT 10',
  ['IT']
);
```

This assumes that you have a connection to your PostgreSQL database through the `db` object. Adjust the table name, field names, and connection details based on your setup.

Remember that the exact syntax and method of querying can vary based on your specific GraphQL schema, MongoDB setup, or PostgreSQL configuration. Please adapt these examples to fit your actual data structure and environment.
microservices in React App
Tags: webdev, javascript, beginners, programming
Published: 2024-02-28 18:57:42

Another approach involves using a proxy server to route requests from the React app to the respective microservices. This can be achieved using a package like `http-proxy-middleware`.

### Proxy Server

1. Create a new directory for the proxy server.
2. Inside the directory, create a `package.json` file:

```json
{
  "name": "proxy-server",
  "version": "1.0.0",
  "main": "index.js",
  "dependencies": {
    "express": "^4.17.1",
    "http-proxy-middleware": "^1.0.6"
  }
}
```

3. Run `npm install` to install the dependencies.
4. Create an `index.js` file:

```javascript
const express = require('express');
const { createProxyMiddleware } = require('http-proxy-middleware');
const app = express();
const PORT = 3000;

app.use('/serviceA', createProxyMiddleware({ target: 'http://localhost:3001', changeOrigin: true }));
app.use('/serviceB', createProxyMiddleware({ target: 'http://localhost:3002', changeOrigin: true }));

app.listen(PORT, () => {
  console.log(`Proxy server is running on port ${PORT}`);
});
```

5. Run the proxy server with `node index.js`.

### Microservice 1: Service A

Follow the steps mentioned in the first example to set up Service A.

### Microservice 2: Service B

Follow the steps mentioned in the first example to set up Service B.

### React Frontend

1. Update the React frontend `package.json` to include a proxy configuration:

```json
{
  "name": "frontend",
  "version": "1.0.0",
  "main": "index.js",
  "dependencies": {
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "axios": "^0.24.0"
  },
  "proxy": "http://localhost:3000"
}
```

2. Update the `index.js` file:

```javascript
import React, { useState, useEffect } from 'react';
import axios from 'axios';

function App() {
  const [dataA, setDataA] = useState({});
  const [dataB, setDataB] = useState({});

  useEffect(() => {
    // Fetch data from Service A
    axios.get('/serviceA/api/data')
      .then(response => setDataA(response.data))
      .catch(error => console.error(error));

    // Fetch data from Service B
    axios.get('/serviceB/api/data')
      .then(response => setDataB(response.data))
      .catch(error => console.error(error));
  }, []);

  return (
    <div>
      <h1>Microservices Example</h1>
      <p>Value from Service A: {dataA.value}</p>
      <p>Value from Service B: {dataB.value}</p>
    </div>
  );
}

export default App;
```

3. Run the React frontend with `npm start`.

This approach uses a proxy server to forward requests from the React app to the microservices. It allows you to centralize routing and manage CORS issues effectively. Adjust the code as needed based on your specific requirements and use case.
microservices in React App
Tags: webdev, javascript, beginners, programming
Published: 2024-02-28 18:57:29

Another approach involves using a proxy server to route requests from the React app to the respective microservices. This can be achieved using a package like `http-proxy-middleware`.

### Proxy Server

1. Create a new directory for the proxy server.
2. Inside the directory, create a `package.json` file:

```json
{
  "name": "proxy-server",
  "version": "1.0.0",
  "main": "index.js",
  "dependencies": {
    "express": "^4.17.1",
    "http-proxy-middleware": "^1.0.6"
  }
}
```

3. Run `npm install` to install the dependencies.
4. Create an `index.js` file:

```javascript
const express = require('express');
const { createProxyMiddleware } = require('http-proxy-middleware');
const app = express();
const PORT = 3000;

app.use('/serviceA', createProxyMiddleware({ target: 'http://localhost:3001', changeOrigin: true }));
app.use('/serviceB', createProxyMiddleware({ target: 'http://localhost:3002', changeOrigin: true }));

app.listen(PORT, () => {
  console.log(`Proxy server is running on port ${PORT}`);
});
```

5. Run the proxy server with `node index.js`.

### Microservice 1: Service A

Follow the steps mentioned in the first example to set up Service A.

### Microservice 2: Service B

Follow the steps mentioned in the first example to set up Service B.

### React Frontend

1. Update the React frontend `package.json` to include a proxy configuration:

```json
{
  "name": "frontend",
  "version": "1.0.0",
  "main": "index.js",
  "dependencies": {
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "axios": "^0.24.0"
  },
  "proxy": "http://localhost:3000"
}
```

2. Update the `index.js` file:

```javascript
import React, { useState, useEffect } from 'react';
import axios from 'axios';

function App() {
  const [dataA, setDataA] = useState({});
  const [dataB, setDataB] = useState({});

  useEffect(() => {
    // Fetch data from Service A
    axios.get('/serviceA/api/data')
      .then(response => setDataA(response.data))
      .catch(error => console.error(error));

    // Fetch data from Service B
    axios.get('/serviceB/api/data')
      .then(response => setDataB(response.data))
      .catch(error => console.error(error));
  }, []);

  return (
    <div>
      <h1>Microservices Example</h1>
      <p>Value from Service A: {dataA.value}</p>
      <p>Value from Service B: {dataB.value}</p>
    </div>
  );
}

export default App;
```

3. Run the React frontend with `npm start`.

This approach uses a proxy server to forward requests from the React app to the microservices. It allows you to centralize routing and manage CORS issues effectively. Adjust the code as needed based on your specific requirements and use case.