teleren/devto huggingface dataset:
A GUIDE TO THE TYPES OF INNOVATIVE BIOMETRIC DEVICES
Published: 2023-07-12 03:08:49



![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vlaxl62m3qlt9cfjezg9.jpg)

"Say goodbye to passwords and hello to the seamless security of biometrics. Verifying your identity is simple and secure with biometric technology, allowing you to focus on what really matters."

Visit our website to learn more! [https://www.iotphils.com/](https://www.iotphils.com/)
What is try except Python?
Tags: python
Published: 2023-07-13 18:03:11

Have you ever tried to divide a number by zero? What happened? Your computer probably crashed. That's because dividing by zero is an error. Errors are things that go wrong in your code. They can happen for a lot of reasons, like if you type something wrong or if you try to do something that's not possible.

How does try except Python work?

Try except Python is a way to handle errors in your code. It's like a safety net that catches errors and prevents your code from crashing. When you use try except Python, you tell your computer to try to run some code. If an error happens, the computer will run the except block instead. The except block is where you can put code to handle the error.

How to use try except Python

You can use try except Python to handle any kind of error. For example, you could use it to handle errors when opening files, errors when accessing the internet, or errors when parsing data.

Here's an example of how to use try except Python to open a file:

```py
try:
  file = open("my_file.txt", "r")
except:
  print("Error opening file!")
```

If you run this code and the file doesn't exist, the except block will run and print the message "Error opening file!".

Conclusion

Try except Python is a powerful tool that can help you to prevent your code from crashing. It's a simple but effective way to handle errors, and it's a great way to make your code more robust.

Here are some tips for using try except Python:
- Use try except Python whenever you're doing something that could potentially cause an error.
- Be specific about the errors that you want to handle.
- Put your code that could cause an error in the try block.
- Put your code to handle the error in the except block.
The most performed RANDOM querying on Rails!
Tags: random, sql, rails, postgres
Published: 2023-07-14 22:31:32

## 🌟 Prepare to have your mind blown by the Unbelievable Performance Gem! 🌟


Are you tired of slow random record retrieval in your Rails applications? Say goodbye to sluggish queries and hello to lightning-fast performance! Our gem is here to revolutionize the way you fetch random records, delivering results that will leave you speechless.


🔥 Experience the future of speed and efficiency as our gem seamlessly integrates into your codebase. With near-instantaneous responses, you can elevate your user experience to new heights.

💪 Join the ranks of developers who are already witnessing jaw-dropping results. Don't miss out on this game-changing gem that's setting new performance standards in the Rails community.

Ready to ignite your Rails application? Visit our repo to learn more about the Unbelievable Performance Gem and be part of the performance revolution today! 🚀💎

{% embed https://github.com/the-rubies-way/random-rails %}
Listing #2 on DEV Community
Published: 2023-07-29 05:21:15

**🚀Taking Observability to the Next Level: Explore New Relic's Free Tier for Developers**
What’s included in the New Relic free tier?

- One full platform users w/ access to all 30+ platform capabilities
- 100 GB data ingest
- Default logs obfuscation
- Unlimited basic users
- Unlimited ping monitor and more!

Get started for free: https://newrelic.com/pricing/free-tier?utm_source=devto&utm_medium=community&utm_campaign=global-ever-green-new-relic-free-tier

https://dev.to/listings/misc
Duck typing in Python
Tags: pythn, programming, beginners, tutorial
Published: 2023-08-16 15:17:11

Duck typing is a concept in programming languages, including Python, where the type or class of an object is determined by its behavior (methods and properties) rather than its explicit class or type declaration. In duck typing, "If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck."

In other words, duck typing focuses on what an object can do, rather than what it is. If an object can perform certain actions or has certain attributes, it's treated as if it belongs to a certain type or class, even if it doesn't explicitly inherit from that type or class.

**Example:**

```python
class Dog:
    def speak(self):
        return "Woof!"

class Cat:
    def speak(self):
        return "Meow!"

class Duck:
    def speak(self):
        return "Quack!"

def animal_sound(animal):
    return animal.speak()

dog = Dog()
cat = Cat()
duck = Duck()

print(animal_sound(dog))  # Output: Woof!
print(animal_sound(cat))  # Output: Meow!
print(animal_sound(duck)) # Output: Quack!
```

In this example, the `animal_sound` function takes an argument that is expected to have a `speak` method. Duck typing allows us to pass objects of different classes (`Dog`, `Cat`, and `Duck`) to the function, as long as they have a compatible method (`speak`). The function doesn't care about the actual type of the object; it only relies on the presence of the required method.

**Real-Life Example:**

Imagine you're building a music player application. You might have different classes for different audio file types, like `MP3`, `WAV`, and `FLAC`. Instead of checking the specific class type for each audio file, you can use duck typing to determine whether an audio file can be played:

```python
class MP3:
    def play(self):
        print("Playing MP3 audio")

class WAV:
    def play(self):
        print("Playing WAV audio")

class FLAC:
    def play(self):
        print("Playing FLAC audio")

def play_audio(audio):
    audio.play()

mp3 = MP3()
wav = WAV()
flac = FLAC()

play_audio(mp3)  # Output: Playing MP3 audio
play_audio(wav)  # Output: Playing WAV audio
play_audio(flac) # Output: Playing FLAC audio
```

In this example, the `play_audio` function expects an object with a `play` method. As long as an object has this method, it can be treated as an audio file and played using the function.

Duck typing simplifies code and promotes flexibility by allowing you to work with different classes and types that exhibit similar behavior. It's a powerful concept in dynamic programming languages like Python, making the code more concise and adaptable.
Opensource NextJS Project | Great For Beginner!
Tags: webdev, nextjs, typescript, react
Published: 2023-08-18 02:55:00

###Introduction 

Recently I have created an open source project that implemented the latest cutting edge technology and packages in order to make myself learn and expand my knowledge overall. 

I am super excited to share this projects with all the people that have started their programming journey. 

Here is the project: 

[Project](https://github.com/vatana7/prompt.io)

Be sure to check it out guys! Thanks
Perbedaan flag --q -q -qq di unzip
Tags: zip, linux, terminal, ubuntu
Published: 2023-08-22 09:40:23

Flag `--q`, `-q`, dan `-qq` dalam perintah `unzip` merujuk pada level verbosity atau tampilan pesan yang ditampilkan selama proses ekstrak. Perbedaan dari masing-masing flag:

- **`--q` (Quiet):** Ini adalah flag yang dapat digunakan untuk mengurangi keluaran atau pesan selama proses ekstrak. Ketika flag `--q` digunakan, `unzip` hanya akan menampilkan pesan kesalahan atau peringatan yang penting. Pesan normal dan informasi ekstra tidak akan ditampilkan.

   Contoh: `unzip --q file.zip`

- **`-q` (Quiet):** Ini adalah bentuk pendek dari flag `--q`. Penggunaan dan efeknya sama seperti yang dijelaskan di atas.

   Contoh: `unzip -q file.zip`

- **`-qq` (Really Quiet):** Ini adalah bentuk yang lebih diam daripada `-q`. Saat menggunakan flag `-qq`, `unzip` hanya akan menampilkan pesan kesalahan yang sangat penting dan tidak akan menampilkan pesan peringatan apa pun.

   Contoh: `unzip -qq file.zip`
Announcement!!!
Tags: devops, opensource, cicd, github
Published: 2023-09-14 13:28:44

We have just released our "generative" software delivery engine source on GitHub -https://lnkd.in/guGVRJ3F.

More docs and features are coming in the near future. Progress on the project can be tracked here -> https://lnkd.in/g2pk26mP

We are also rolling out early access to the hosted version of the engine where action plans can be centralized and executed from any #cicd tool such as #gitlab ci or #github actions. Join the waitlist at https://www.trustacks.com/.

If you are interested in contributing in any way join us on the catalyst channel on our Discord(https://lnkd.in/giMQh2HX) to get involved in the next iteration.

Let us know if you have any questions and stay on the lookout for new updates.
HTML CSS and JavaScript Projects for Beginners
Tags: javascript, html, css, tutorial
Published: 2023-09-17 13:35:06

html css and javascript projects for beginners

hey guys today I'm going to share html css and javascript projects for beginners.  Recently, I've been working with HTML, CSS & JS so, I've been creating different types of projects. So, I've decided to share with you the projects that I made.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/oux65k31ejnggwy7vnlu.png)

When you improve your HTML, CSS & JS skills you need to make different types of projects, once you make the projects, you will improve your coding skills. So, I made different types of projects using HTML CSS & JS, you can watch and learn them from scratch practically.

After watching the complete tutorial, you will get a lot of ideas from it, Also you will get many ideas and learn something new from it. I hope this tutorial is helpful and beneficial for you.

{% embed https://www.youtube.com/watch?v=9qaNhk7gU24 %}
Amazon PPC vs. Product SEO: Which is Right for Your Business?
Tags: amazon, ppc, seo, productivity
Published: 2023-09-19 17:41:37

Every Amazon seller must make a crucial choice: "Amazon PPC vs. Product SEO: Which is Right for Your Business?" Pay-Per-Click (PPC) advertising gives you rapid visibility through sponsored listings and enables you to target specific audiences and keywords. Your problem is completely resolve after partnering with VAamazon, a trusted brand specializing in [Amazon PPC services](https://vaamazon.com/amazon-ppc-services/). VAamazon's expertise enhances this choice, guiding businesses to the most effective strategy. While promising long-term sustainability and cost effectiveness, Product SEO, on the other hand, focuses on organic rankings. 

Your business's objectives and finances ultimately determine the option. Amazon PPC might result in quick sales if you're looking for quick results and are prepared to spend money on advertising. But understanding Product SEO is essential if you want a strategy that will last longer and cost less in the long run. The best approach frequently combines the two methods, utilising the strength of PPC for immediate benefits and SEO for long-term success to create a well-rounded and efficient Amazon marketing campaign.
Exploring the Application of Similarity Measurement Algorithms in Local Area Network Monitoring Software
Published: 2023-09-20 02:23:40

The application of similarity measurement algorithms in local area network (LAN) monitoring software is incredibly versatile! Think of them as little assistants for your network, helping administrators tackle device and traffic management with ease, all while ensuring a more stable, faster, and safer network. Let’s dive into how similarity measurement algorithms can be applied in LAN monitoring software:

Traffic Marvel Detection:** Imagine having an algorithm that can compare real-time network traffic patterns to normal behavior and swiftly detect suspicious traffic, such as DDoS attacks and malicious data flows. It’s like having a super cop for your network.
Malicious Behavior Bunny Hunt:** Sometimes, miscreants spread malicious information between hosts. In such cases, these algorithms can assist in identifying them, just like network detectives.
Effortless Load Balancing:** When some servers are overworked and others are underutilized, these algorithms can monitor them and automatically balance traffic, maintaining optimal performance and availability, acting like network wizards.
Application Identification:** These algorithms can also identify the applications currently in use by comparing traffic characteristics, making network administrators true application connoisseurs.
Device Fingerprinting:** They can even tell us about the devices on the network, including their type, operating system, and manufacturer, making them the masters of device recognition.
Exception Log Tracking:** With these algorithms, we can analyze log data and promptly identify unusual events, errors, or anomalies, like network storytellers.
User Behavior Security Guardians:** By analyzing user behavior, these algorithms can detect unusual user activities, such as unauthorized access or data leakage, acting as network security guardians.
Traffic Categorization and Cool Visualization:** They can categorize traffic data and present it in stunning visual reports, making it easy for network administrators to understand and manage network traffic, turning them into network artists.
Historical Data Time Travel:** Lastly, these algorithms can analyze historical performance data, helping in planning network capacity to ensure it meets future demands, like network time travelers.
However, it’s essential to remember that in practical use, the choice of suitable similarity measurement algorithms depends on monitoring requirements and the network environment. You might get to use some cool algorithms like cosine similarity, Euclidean distance, Jaccard similarity, resembling network magicians. Additionally, don’t forget to consider data collection, processing, and storage methods to ensure that the monitoring system remains efficient and can cope with ever-growing challenges.
How Long Does Esaver Watt Take to Filter Dirty Electricity?
Published: 2023-09-22 11:02:54

It is how to put together a good working relationship with that approach. I know, neither would you. It's now the day of this dilemma and this is how to claim your Esaver Watt Reviews. I, clearly, should want to grasp doing this. That solution is a good arrangement to get Esaver Watt Reviews. This is your option. I left no stone unturned to discover Esaver Watt Reviews. I've been trying out using that lately. Categorically, it sticks out like a sore thumb. Here it is polished up for you: You need to experience using it for yourself. Don't get all worked up over using it yet using that isn't as fresh as a daisy. Let's go to the next step. I'm the sample mastermind. This is now time to move out. My concept has several high end features. The better your Esaver Watt Reviews the shorter the way to popularity. It's a guide to that modus operandi. For sure, maybe I am seeing this with this and I'll bet a lot of you will be dying to learn more. If you follow these common sense tips, you'll locate that your Esaver Watt Reviews will run a lot smoother. I will show you a couple of additional examples of this thing below. It's as effortless as this. That is really gimmick proof. You will want to make certain that you have a Esaver Watt Reviews this matches whatever you like. As if! This case which I made could be weaker. It is an ongoing investigation of mine. That is an individual effort. This is one of the most rewarding things that anybody can participate in. Nothing will give more passion than it and I'll be your unofficial tour guide. This isn't a real study in it. Do you know any reason why this might be happening? Using that is the pick of the litter. You want to guess about that again. You're likely thinking this as it regards to this good news also. 

Official Site: https://www.mid-day.com/lifestyle/infotainment/article/esaver-watt-reviews-scam-or-legit-the-dark-side-of-esaverwatt-energy-saver-23310268

Related Reference

https://rebrand.ly/Esaver-Watt-Official-Site
Gracefully Reloading Flask App Systemd Service
Tags: development, programming, developers, python
Published: 2023-09-24 02:11:47

Introduction:

Deploying new changes to a Flask application often requires the reload of both the Gunicorn and Nginx services to incorporate the updates. However, this standard procedure can occasionally lead to 502 errors and temporary downtime. To address this challenge, we’ll explore a method for gracefully reloading these services, ensuring that your Flask application remains available to users without any interruptions during the deployment of new changes. This approach is particularly useful for maintaining high availability and a seamless user experience.


## **Step-by-Step Guide**

**1. Reload Nginx**

To initiate a graceful reload of your Flask application, start by reloading Nginx. Nginx is a popular web server and reverse proxy server that can serve as a frontend to your Flask app.

 `sudo service nginx reload`

This command instructs Nginx to reload its configuration without stopping and starting the entire service. By doing so, Nginx ensures that new connections are directed to the updated Flask app without interrupting ongoing connections.

**2. Gracefully Reload Gunicorn**

Next, we’ll perform a graceful reload of Gunicorn, the WSGI HTTP server used to run the Flask application. Gunicorn is responsible for serving your Flask app, and a graceful reload allows it to seamlessly switch to the new version without terminating existing connections.

 `sudo kill -HUP $(ps -C gunicorn fch -o pid | head -n 1)`

Here’s a breakdown of the command:

`ps -C gunicorn fch -o pid`: This command retrieves the PID (Process ID) of the running Gunicorn process for your Flask application.
`head -n 1`: It extracts the first PID in case multiple Gunicorn processes are running.
`sudo kill -HUP <PID>`: The kill command sends the HUP (Hang Up) signal to the Gunicorn process, instructing it to gracefully reload. This means Gunicorn will finish processing the ongoing requests and then switch to the new version of your Flask app.

**Conclusion**
By following these steps, you can gracefully reload your Flask application without interrupting ongoing connections, ensuring that your application remains available to users without any downtime. This approach is particularly useful for maintaining high availability and ensuring a seamless user experience during updates or configuration changes.

Remember to adapt the commands to match your specific setup and directory structure. With this method, you can confidently deploy changes to your Flask app while keeping your services up and running smoothly.

Find out more post like this [here](https://codesolutionshub.com/?utm_source=dev_to)
Deploy FlutterFlow Web Project with Firebase Hosting
Tags: flutterflow, firebase, lowcode, flutterflowdevs
Published: 2023-09-25 11:40:56

 Hello Developers,  Our fresh guide on deploying your Flutterflow project with Firebase is out. Great for everyone, from beginners to pros! Don't miss it.

We'll walk you through each stage of the process and ensure you have solutions to tackle common problems.

 🔗(https://www.flutterflowdevs.com/blog/deploy-flutterflow-project-with-firebase-hosting)
Should I become Full-stack developer to get regular works?
Tags: discuss
Published: 2023-10-01 14:10:23

---
title: Should I become Full-stack developer to get regular works?
published: true
tags: discuss
---
I am a freelance front-end developer. Besides, I do occasional remote contractual jobs. I have been working professionally for 5+ years. In these years I have built/fixed websites and web applications for clients. I mostly work with React.js, Angular 2+, and Next.js. I did a couple of full-stack projects with Firebase/Appwrite/Contentful as the backend. So, you can understand that, I am mostly a frontend developer with experience in working with web only.



Recently, I have been facing some issues which have become a headache for me. I am getting many clients through freelancing platforms who are asking for full-stack development. They don't want to hire two developers for their projects. Also, when I am thinking of applying for remote contractual jobs, I see there are more full-stack jobs than frontend ones. And, the frontend sector seems so crowded. There are tons of bids on Upwork, tons of gigs on Fiverr and tons of applicants on Job boards for frontend work. As a result, when I am trying to charge more, the clients are not getting interested because they are getting more FE developers with lower rates. After 5 years of work, I can't just lower my charges. So, I am losing many clients.



Now, I am seeking your suggestions and thoughts. Should I learn the backend (Preferably Node.js) and try to become a full-stack developer? Or, should I do more complex frontend projects which will establish myself as an expert? Also, should I give some focus on cross-platform mobile app development like React Native/Flutter? Or, am I missing something as a freelancer? How should I at least keep my rate steady and get work?
Compose and send yahoo email in a mobile browser
Tags: email, gmail, spectrum, att
Published: 2023-10-05 09:11:11

[Yahoo Mail provides a convenient way to access and manage your emails on mobile devices through a mobile browser](https://techomails.com/compose-and-send-yahoo-email-in-a-mobile-browser-usa-canada/). Composing and sending emails directly from your mobile browser allows you to stay connected and respond to important messages while on the go.
How to Recover RediffMail Account Without Phone
Tags: email, gmail, yahoo
Published: 2023-10-05 10:12:31

[Losing access to your Rediffmail account can be a frustrating experience](https://techomails.com/how-to-recover-rediffmail-account-without-phone-usa-canada/), especially when you don’t have access to your registered phone number. However, Rediffmail provides alternative methods to help you recover your account and regain access. In this comprehensive guide, we will walk you through the step-by-step process of recovering your Rediffmail account without a phone.
Normalise array in Rails 7.1
Tags: ruby, rails, postgres, programming
Published: 2023-10-10 06:07:32

---
title: Normalise array in Rails 7.1
published: true
description: How to normalise an array in Ruby on Rails 7.1
tags: #ruby, #rails, #postgres, #programming
# cover_image: https://direct_url_to_image.jpg
# Use a ratio of 100:42 for best results.
# published_at: 2023-10-10 06:03 +0000
---


One of the (many) good features of Rails 7.1 is the `normalizes` method. This is how you can use it with fields of type array. 

In this example there is a field called folders that we want to normalise removing blank entries and ensuring all entries are down cased. 

```ruby
normalizes :folders, with: ->(values) { (values || []).map(&:downcase).reject(&:blank?) }
```