teleren/devto huggingface dataset:
Java.lang.classnotfoundexception org.apache.avro.data.timeconversions
Published: 2023-09-30 15:32:03


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/zufewoehj4lzp3wnezhz.jpg)https://javatute.com/spring/java-lang-classnotfoundexception-org-apache-avro-data-timeconversions/
SQL - Use Transactions for Data Consistency
Tags: sql, programming, tutorial
Published: 2023-09-30 15:30:00

Transactions are a fundamental concept in SQL databases that help maintain data consistency and integrity. A transaction is a sequence of one or more SQL statements that are treated as a single atomic unit. Transactions ensure that either all the changes within the transaction are applied, or none of them are, which helps prevent data corruption and inconsistencies. Here's how to use transactions effectively:

**Start a Transaction:** Depending on your database system, You can start a transaction using the `BEGIN TRANSACTION` or `START TRANSACTION` statement.

   ```sql
   BEGIN TRANSACTION;
   ```

**Execute SQL Statements:** Execute the SQL statements that make up your transaction. This can include `INSERT`, `UPDATE`, `DELETE`, and other data manipulation statements.

   ```sql
   UPDATE accounts
   SET balance = balance - 100
   WHERE account_id = 123;

   INSERT INTO transaction_log (account_id, amount, transaction_type)
   VALUES (123, 100, 'Withdrawal');
   ```

**Commit the Transaction:** If all the statements within the transaction succeed without errors, you can commit the transaction to make the changes permanent in the database.

   ```sql
   COMMIT;
   ```

**Rollback the Transaction:** If any part of the transaction encounters an error or you need to cancel the changes for any reason, you can roll back the transaction to its initial state.

   ```sql
   ROLLBACK;
   ```

Using transactions is essential when data consistency is crucial, such as financial transactions or inventory management. Here are some best practices for using transactions:

- Keep transactions short and focused: Minimize the time a transaction holds locks on data to reduce contention with other transactions.

- Handle exceptions: Use error handling mechanisms in your database system (e.g., `TRY...CATCH` in SQL Server or `BEGIN...EXCEPTION` in Oracle) to gracefully handle errors within transactions.

- Use transactions within stored procedures: Encapsulate complex operations within stored procedures or functions and execute them within transactions to ensure consistent behavior.

- Be mindful of isolation levels: Understand and set the appropriate isolation level for your transactions to balance between data consistency and performance.

By using transactions effectively, you can ensure the integrity of your data and maintain a high level of data consistency within your SQL database.
Hiring full stack developer #hiringnow #fullstackdevelopers
Published: 2023-09-30 15:21:21

You will be building a full website with dashboard connected to the Only Fans API that tracks, records, and reports data in realtime. That's a  FULL authentication system set up and delivered correctly while also being extremely secure.

This project will need to be finished at 31 october.

If you can do it email me, diogomartins.xix@gmail.com
Unfollow - Amazon Prime Video | Souvik Paul | Rahul Singha | Ravik Studio
Tags: animation, beginners, ai
Published: 2023-09-30 15:17:18

On a beautiful evening at a beach, a man was lying on a chair and enjoying the sunset. Suddenly he saw an unidentified flying object (U.F.O) appear in the sky.

Watch on Amazon: https://www.amazon.com/dp/B08R1B7XJX
IMDb: https://www.imdb.com/title/tt13074804/

On a beautiful evening at a beach, a man was lying on a chair and enjoying the sunset. Suddenly he saw an unidentified flying object (U.F.O) appear in the sky. The man is amazed by the incident and just because he is a social media-addicted person, he's trying to take a snap of the object for likes, for fame, for money. The object is floating all over the sky and the man wants to reach the position to take the photo. The unknown species got irritated by the human and shot him with his alien gun and disappeared into the sky.

Director, Writer & Animator: Rahul Singha
Exclusive Producer: Souvik Paul

Available on [Amazon Prime Video](https://www.amazon.com/dp/B08R1B7XJX)

Subscribe: https://bit.ly/sub-to-souvik

Let's talk tech:
Facebook: https://fb.com/thesouvikpaul
Instagram: https://instagram.com/amisouvikpaul
Twitter: https://twitter.com/thesouvikpaul
FB Page: https://fb.com/amisouvikpaul
Bing: https://bing.com/public/thesouvikpaul
Blog: https://gadgetsgadder.com

© Souvik Paul 2023
Configuring Emacs, Clojure, and cljKondo in one minute
Tags: clojure, emacs, cljkondo
Published: 2023-09-30 14:50:56

---
title: Configuring Emacs, Clojure, and cljKondo in one minute
published: true
description: 
tags: clojure,emacs,cljkondo
# cover_image: https://direct_url_to_image.jpg
# Use a ratio of 100:42 for best results.
# published_at: 2023-09-30 14:47 +0000
---

Given you have Emacs 29.1 and JDK on your GNU/Linux.

## Install Clojure

```
wget https://github.com/clojure/brew-install/releases/latest/download/linux-install.sh -O install_clojure.sh && \
  chmod 755 install_clojure.sh && \
  su -c ./install_clojure.sh
```

## Install cljKondo

```
wget https://raw.githubusercontent.com/clj-kondo/clj-kondo/master/script/install-clj-kondo -O install-clj-kondo.sh && \
  chmod 755 install-clj-kondo.sh && \
  su -c ./install-clj-kondo.sh
```

## Put this in your .emacs file

```Lisp
(setq warning-minimum-level :emergency)
(setq package-archives '(("elpa" . "https://elpa.gnu.org/packages/")
                         ("melpa" . "https://melpa.org/packages/")))
(use-package flycheck
  :config
  (add-hook 'after-init-hook #'global-flycheck-mode))

(use-package flycheck-clj-kondo
  :ensure t)

(use-package clojure-mode
  :ensure t
  :config
  (require 'flycheck-clj-kondo))

(use-package paredit :ensure t
  :config
  (add-hook 'clojure-mode-hook          #'enable-paredit-mode)
  (add-hook 'edn-hook                   #'enable-paredit-mode))
```
symmetric matrix
Published: 2023-09-30 14:40:17

`// Simple c++ code for check a matrix is
// symmetric or not.
#include <iostream>
using namespace std;

const int MAX = 100;

// Fills transpose of mat[N][N] in tr[N][N]
void transpose(int mat[][MAX], int tr[][MAX], int N)
{
	for (int i = 0; i < N; i++)
		for (int j = 0; j < N; j++)
			tr[i][j] = mat[j][i];
}

// Returns true if mat[N][N] is symmetric, else false
bool isSymmetric(int mat[][MAX], int N)
{
	int tr[N][MAX];
	transpose(mat, tr, N);
	for (int i = 0; i < N; i++)
		for (int j = 0; j < N; j++)
			if (mat[i][j] != tr[i][j])
				return false;
	return true;
}

// Driver code
int main()
{
	int mat[][MAX] = { { 1, 3, 5 },
					{ 3, 2, 4 },
					{ 5, 4, 1 } };

	if (isSymmetric(mat, 3))
		cout << "Yes";
	else
		cout << "No";
	return 0;
}
`
Journey to Astro - #1 Pre-Condition
Tags: beginners, astro, indonesia
Published: 2023-09-30 14:18:19

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/h9063u5ywa28sxljs72h.png)

Saya sudah hampir 6 bulan mendalami [Next.js](https://nextjs.org/) yang berbasis React.js sebagai library utama dan didominasi oleh kekuatan Javascript didalamnya. Namun saat ini saya sedang mengeksplorasi bagaimana Astro bekerja, karena dari yang saya baca, Astro mampu memberikan performa yang jauh lebih baik dari framework web development manapun.

Melalui postingan berkala ini, saya akan membagikan pengalaman saya dalam mendalami Astro sekaligus memberikan sedikit perbandingan dengan Next.js sebagai framework yang saat ini menjadi acuan utama para web developer.

---

**!!! Quick review**, website terdiri atas 3 komponen utama : 
- HTML : Struktur halaman / DOM (Document Object Model)
- CSS : Styling DOM
- Javascript : Membangun interaksi/halaman dinamis
- React.js : salah satu library terkenal dengan berbasis component (https://react.dev/)
- Next.js : salah satu framework web development yang sedang naik daun (https://nextjs.org/)

## Bagaimana React.js menampilkan sebuah webpage ?

Proses utamanya terdiri atas 2 tahap, yakni Render & Hydration. 
- **Render** adalah proses dimana React akan membangun DOM structure website anda sehingga anda sudah bisa melihat hasil akhir web nya secara tampilan namun belum bisa dilakukan interaksi apapun.
- **Hydration** yaitu proses dimana React akan mencari DOM yang perlu dipasangkan Javascript untuk membangun interaksi yang dinamis.

Kondisi setelah Render :

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/6djk68bp2lr2ia4zizej.png)

Kondisi setelah Hydration :

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/uqb2rljs30ib8q35vcc4.png)

Kesimpulannya adalah bahwa React.js secara default akan melakukan proses Hydration, dan di Next.js proses Hydration ini pasti dilakukan di level halaman setiap mau menampilkan sebuah webpage.

## "Wah" jadi agak lemot dong ya karena ada 2 proses ini ?

Secara user menurut saya 2 hal ini tidak akan begitu terlihat.. hanya akan terlihat apabila memang halaman sebuah website menggunakan Javascript yang berlebihan. Contohnya mungkin website berbasis wordpress, atau web lain yang interaksinya kompleks & banyak hal yang dinamis disana.

Lalu bagaimana solusinya ? Disinilah alasan mengapa **Astro** hadir. **Astro** menawarkan berbagai efisiensi yang bisa dilakukan untuk menghindari rendering javascript yang tidak dibutuhkan. Berikut adalah beberapa klaim mereka :

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/tvp9smg1q7qjpspmom76.png)

Melalui postingan berkala ini saya akan menguak apakah memang **Astro** memiliki performa sesuai dengan apa yang sudah mereka klaim.

Mari kita lanjut ke part 2 :D

Thank You~

Yumna Pratista Tastaftian
Product Engineer, Indonesia

ref : 
https://docs.astro.build/en/concepts/why-astro/
https://softwaremill.com/astro-island-architecture-demystified/
https://docs.astro.build/en/concepts/why-astro/
2FA on Laravel with the support of the most popular SMS providers
Tags: webdev, laravel, 2fa, php
Published: 2023-09-30 14:12:09

[https://github.com/alexeygeno/phone-verification-laravel](https://github.com/alexeygeno/phone-verification-laravel)

**Key features:**
- Easy switching between different SMS providers
- Configurable length and expiration time for OTP
- Configurable rate limits
- Localization
- Usage with different Laravel approaches: automatic injection, facade, and commands
- Logging notifications instead of sending real ones, beneficial for non-production environments
- Out-of-the-box routes for quick start
About Selenium...
Tags: testing, python, automation, blog
Published: 2023-09-30 14:11:34

## Selenium:
  selenium is an open-source automating testing tool with we can use various-browser to automating tests.

## uses of selenium:

- selenium is mainly used to reduce human error and time consuming.

- we can perform cross browser testing to execute our project with efficient way.

- selenium tool supports multiple languages like python , java , ruby , c#.

- while using selenium we can cover maximum coverage of application functionality .

- And it allows multiple testcases execute concurrently and reduce overall testing time.

- we can reuse test cases in multiple projects in various path.

- while, we using selenium we can get accurate test reports and maintain that reports and track reports also.

- we can perform continuous integration and continuous deployment to identify issues in development cycle.
Scaling Up with Cassandra: NoSQL in the Spotlight! 💡
Tags: cassandra, nosql, bigdata, distributeddatabases
Published: 2023-09-30 13:56:38

In our data-driven era, one thing is undeniable: data is growing at an unprecedented rate. As businesses and applications generate more and more information, the need for scalable storage solutions becomes paramount. Enter Cassandra – the unsung hero of distributed databases! 🌐

##### Cassandra's Remarkable Distributed Architecture
Cassandra's distributed architecture is nothing short of remarkable. It's engineered to handle massive data volumes and provide high availability without compromising on performance. Whether you're dealing with large-scale applications, real-time analytics, or the challenges of managing data across multiple data centers, Cassandra shines as a robust choice.

##### Your Experiences Matter!
Have you worked with Cassandra? 📊 Share your experiences in the comments! Let's discuss the innovative ways you've leveraged Cassandra to tackle big data challenges. Did you find it to be a game-changer for your projects?

##### Versatility Beyond Scalability
Cassandra's versatility extends beyond its scalability. With its ability to distribute data across nodes, seamless replication, and tunable consistency levels, it's become a go-to solution for companies dealing with complex data requirements.

##### Fuel Your Career Growth
As technology professionals, embracing Cassandra and understanding its capabilities can open up exciting possibilities for your projects and career growth. It's a NoSQL powerhouse worth exploring if you haven't already.

Join the Conversation!
Let's keep the conversation going! Share your thoughts on Cassandra, NoSQL databases, and the ever-expanding world of big data. 🔍

Discover how Cassandra can help you conquer the challenges of today's data-intensive landscape. 🚀💼
How to enable the new control flow or defer block in the Angular v17.0.0-next.6?
Tags: angular, javascript, signals, webdev
Published: 2023-09-30 13:45:49

Even though the new Angular control flows or the defer block changes are available on the release v17.0.0-next.6, you cannot directly use them now in your project and will end up with the below error.

```
error NG5002: Invalid ICU message. Missing ‘}’ 
or 
error NG5002: Unexpected character “EOF”
(Do you have an unescaped “{“ in your template?
Use “{{ ‘{‘ }}”) to escape it.)
```
To try a new control flow or the defer block now you have to add the below config in the `angularCompileroptions`.

```json
{
  "angularCompilerOptions": {
    ....
    "_enabledBlockTypes": [
      "if", "switch", "for", "defer"
    ]
  }
}
```
`_enabledBlockTypes` is an internal one that will be changed eventually. But for now, it will allow you to play around with the control flows.

You can find the full working sample [here](https://github.com/Madhust/angular-control-flows).

Feel free to let me know if you have any comments.
Crush Your 1z0-1003-22 Exam with Dumps
Tags: webdev, beginners, programming, tutorial
Published: 2023-09-30 13:13:39

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Remember, success is not achieved overnight; it requires dedication, hard work, and smart preparation. Take advantage of all available resources – including authentic 1z0-1003-22 dumps – to give yourself an edge over others.
With these powerful tools at your disposal, there's no limit to what you can achieve on this challenging certification journey.
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Using Compact Mode with Aex v0.18.0
Tags: typescript, node, web, javascript
Published: 2023-09-30 13:00:02

Traditionally we handle http request with a callback have parameters named:
request, response, next or something.
In Aex, we use :
```ts
req, res, scope
```
where scope is a data carrier for the request.

The following is the traditional http handler in aex:
```ts
class User {
@http("get", "/user/login")
public async login(req, res, scope) {
}
}
```

in aex v0.18.0, we introduced the compact mode, where we can use only one variable if others are not needed.

Here is the compact mode http handler in aex:

```ts
class User {
@http("get", "/user/login", true)
public async login(context) {
  const {req, res, scope} = context;
  const res = context.res;
}

@compact("get", "/user/login")
public async compact(context) {
  const {req, res, scope} = context;
  const res = context.res;
}
}
```
It wraps all variables into one context object.

So you can choose a tidy one for your programs for certain development stages.

You can start with compact mode then to the traditional mode or traditional mode to compact mode.

You can try it with :
```bash
npm install github:calidion/aex#v0.18.0
```
What you learning about this weekend?
Tags: codenewbie, discuss, learning, beginners
Published: 2023-09-30 13:00:00

Hey my peeps! 👋

What ya learning on this weekend?

Whether you're sharpening your [JS](https://dev.to/t/javascript) skills, making PRs to [your OSS repo of choice](https://github.com/forem/forem) 😉, sprucing up your portfolio, or [writing a new post](https://dev.to/new) here on DEV, we'd like to hear about it.

Expand your mind! 🤯

![A clip from Tim and Eric, where a goofy looking dude is miming his mind exploding while he floats through space](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vcbfxri13ucip79bobfy.gif)
How can I submit my journal for indexing at ABCD Index?
Tags: devjournal, research
Published: 2023-09-30 12:44:50

To submit a journal for indexing at [ABCD Index](https://abcdindex.com/blogs/how-to-publish-research-paper-in-international-journal-free)**, you can follow the steps below**:

Apply New Journal Index- **[Publisher Registration Form](https://abcdindex.com/blogs/apply-for-journal-indexing)**

**1.** Open the ABCD Index home page and search for journals related to your field. 
**2.** To search for journals, go to the search tab and type in the name of the journal or keywords related to your research 
**3.** Once you have identified the journal you want to submit, go to the **[ABCD Index website](https://abcdindex.com/blogs/publish-research-paper-online-free)** and click on the "Submit Journal" button
**4.** Fill out the submission form with the required information, including the journal title, ISSN, publisher name, and contact information 
**5.** Upload the journal's cover page, **[editorial board](https://abcdindex.com/blogs/join-as-editorial-board-member)**, and other relevant documents 
**6.** Submit the form and wait for the review process to be completed. It usually takes 10-15 working days for ABCD Index to review a journal 

It is worth noting that **[ABCD Index provides indexing services](https://abcdindex.com/blogs/best-free-online-journals)** for academic articles, conferences, and citations The platform aims to help scholars, researchers, professors, and students get correct information about **[international journal sites](https://abcdindex.com/blogs/submit-article-for-publication)** and indexing services like Scopus
A better way to communicate with business teams
Tags: webdev, career
Published: 2023-09-30 12:31:40

**TL;DR:** Developers traditionally use libraries as foundational tools. However, to effectively communicate with business teams, plugins and admin panels are becoming essential. They simplify technical details, making software more understandable for non-developers. We're developing plugins and admin panels for React to further enhance this bridge. Support us on [GitHub](https://github.com/webcrumbs-community/webcrumbs).

## Libraries: A developer's core

For developers, libraries are essential. They're our building blocks, offering routines and functions we rely on. They're our language, enabling us to craft intricate applications with precision.

## The business interface: Plugins & admin panels

But when talking to business teams, that language can sometimes feel too technical. That's where plugins and admin panels come into play:

- **Plugins**: These are our translators. They're modular, easily showcasing how software can be tailored or enhanced for specific business needs.
  
- **Admin Panels**: These are our visual aids. They give a clear view of what software does, presenting data and operations in a way that's easily digestible for non-developers.

## Why it matters

While we, as developers, immerse ourselves in libraries, business teams need clarity and adaptability. Plugins and admin panels break down the complexities of our code into something tangible and understandable. It’s a way of ensuring our technical solutions align with business objectives.

## Wrapping up

Platforms like dev.to serve as hubs for sharing knowledge between developers. As we navigate the evolving landscape of technology, it’s essential to find effective ways to bridge the gap between our technical world and the business realm. While libraries remain our bedrock, the emerging paradigm emphasizes plugins and admin panels as tools to facilitate this communication.

## Building for the future: React plugins and admin panels

We're currently laying the groundwork to introduce plugins and admin panels specifically for React. Our aim is to make the communication between developers and businesses even more seamless. If this resonates with you, we'd appreciate your support. Check out our project on GitHub and give us a star if you find it valuable: [webcrumbs-community/webcrumbs](https://github.com/webcrumbs-community/webcrumbs).