teleren/devto huggingface dataset:
HFDP(12) - Compound Pattern
Published: 2024-05-29 16:21:30

Compound Pattern is to combine two or more patterns to solve a general problem. One of the most famous compound pattern is the MVC (model view controller) pattern. 

MVC involves Model, View, and Controller. When user touch a button, it will invoke controller to do certain things. The controller then invoke the model to modify its state. Finally, the model will notify the view that something changes. The view will be rendered accordingly. 


![MVC](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gugmw15q1becdt4xk0kv.png)



Learning MVC from top down is a bit involving. However, learning it from bottom up is very simple. MVC is nothing but a combination of patterns. 

The controller and the view are using the `Strategy pattern`. The view does not care the concrete behavior, it just invokes the controller. A concrete controller is just an implementation of an interface and could be easily replaced by another implementation. 

The model and the view are using the `Observer pattern`. The model is the Observable and the view is the Observer. The model could notify the subscribed view the changes of its status. The observer view will update the view accordingly. 

The view itself is using the `Composite pattern`. Consider the relationship between a window and a button. They are both visual elements but have an inclusive relation. A view could be a standalone or could contain other views. 

Sometimes we want to reuse a controller. Often we need to use Adapter pattern to adapt the interface. 

MVC pattern is so useful that it gets adapted and used in many popular frameworks. In the web world, a thin client approach is where the model, most of view, and the controller all reside in the server, while the browser renders the view. Single Page Application approach is all the model, view and controller reside in the browser. Most frameworks lie in between the two extremes.
Day1 #90daysofdevops
Tags: devops, day1, 90daysofdevops, automation
Published: 2024-06-01 13:27:13

**1. What is DevOps?**

DevOps combines cultural philosophies, practices, and tools to improve collaboration and communication between software development and IT operations teams.  This collaboration allows faster development cycles, improved software quality, and quicker response to customer needs.

Traditionally, development and operations teams worked separately. Developers would write the code, and then hand it off to operations to deploy and maintain it. This could lead to inefficiencies and friction between the two teams. DevOps breaks down these silos and encourages the two teams to work together throughout the entire software development lifecycle.

**2.What is Automation?**
Automation is the use of technology and tools to perform tasks and processes without human intervention.

It involves scripting or programming to automate repetitive and manual tasks, reducing the need for manual intervention and human error.

Automation can be applied to various areas, such as software testing, deployment, infrastructure provisioning, and monitoring.

By automating tasks, organizations can improve efficiency, reduce errors, and free up valuable time for teams to focus on more critical and creative work.

**3.What is  Scaling?**
Scaling is the ability to handle increased workloads or accommodate growth without sacrificing performance or reliability.

In the context of software systems, scaling involves adding resources, such as servers or computing power, to handle higher demands.

Scaling can be achieved vertically (scaling up) by increasing the capacity of individual resources, or horizontally (scaling out) by adding more resources in parallel.

Effective scaling ensures that software applications can handle increased user traffic, data processing, or other workloads while maintaining optimal performance.


**4.What is  Infrastructure?**

Infrastructure is the underlying foundation or framework that supports software applications and services.

It includes hardware, servers, networks, storage, and other components required to host and run software systems.

In the context of DevOps, infrastructure can also include cloud-based services, virtualization, containers, and other technologies.

Infrastructure needs to be scalable, reliable, and flexible to meet the changing demands of software applications.

 **5.Why DevOps is Important?**
1. Faster time to market

2. Improved collaboration

3. Continuous integration and delivery

4. Increased reliability

5. Enhanced quality

6. Scalability and flexibility

7. Cost savings
Chrome extension for youtube to make notes
Published: 2024-06-01 13:25:22

Ever wished you could take notes while watching YouTube videos without the hassle of switching between tabs? 

Well, now you can with my latest Chrome extension!

I created this interesting chrome extension, that enables you to take notes while watching any YouTube video. With a sleek sidebar interface, you can jot down thoughts and insights without interrupting your video playback.

1. Simply click the "Add Notes" button to pause the video, jot down your comments, and hit "Save". 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/wyhyym9ag77w8igbaae8.png)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/obqmypeaw3o1f8dxb1qz.png)

2. Your notes, along with the video URL with a timestamp and title, are neatly organized in a table below.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/uw3ulxzgss82pfmwfe5c.png)

3. And when you're done you can export your data in .xls format.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/y473k87oauebhgyqkuoy.png)

Best of all, this extension isn't limited to just one video. You can take notes from multiple sources, all within the same intuitive interface.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dr1cq0rwq20qzd5l1597.png)

This is the first version and we're not saving anything just yet, future updates will ensure your notes are always secure. No more worries about losing your valuable insights!

This is just the beginning! Stay tuned for more exciting features and improvements to enhance your note-taking experience.

Feedback and ideas are always appreciated.
How does Form submit as a default event?
Tags: react, typescript
Published: 2024-06-01 13:24:31


Use a `trigger` provided react-hook-form and call this in custom submit method.
This approach is using basic JavaScript.

```tsx
const formSchema = z.object({
  name: z.string(),
});
const Form = () => {
  const { register, trigger } = useForm<z.infer<typeof formSchema>>({
    resolver: zodResolver(formSchema),
  });

  const onSubmit = async (e: React.FormEvent<HTMLFormElement>) => {
    const isValid = await trigger();
    if (!isValid) {
      e.preventDefault();
      return;
    }
    // if you want to add something to the form, you can write it here.
  };

  return (
    <form onSubmit={onSubmit}>
      <input {...register('name')} />
      <button type="submit">Submit</button>
    </form>
  );
};
```

I develop the react application on MPA, so I needed to send a form by not ajax.
Day 7 of my progress as a vue dev
Tags: web3, vue, typescript, tailwindcss
Published: 2024-06-01 13:15:20

**About today**
So I'm back after two days of missing my streak of posting here, but I did not miss a day of development. Still, I'm counting my progress according to the days I post here so day 7 it is. I'm done implementing logic and visualization of stack, queue, and linked list on my DSA visualizer project and it has been really fun. I also refactored the code a little bit and redefined the whole file structure of the application more clean and stream lined.

**What's next?**
I will be moving on to binary search tree and will do the same for like I did with other structures. Although I really want to push the boundary of animation and visualization of structures but for now I wanna get the basic add and remove functionality to it and later put on extra time to polish it up.

**Improvements required**
I really want to take time with this one and basically make it as efficient and fun to use as possible in terms of visuals and functionality. I really want to add sorting functionality for each structure and present them in a way it is fun to visualize. I do have some ideas on how to get there but if there are recommendations, feel free to write down.

Wish me luck!
Stainless Steel Plates: Ensuring Hygienic Surfaces in Food Preparation Areas
Tags: machine, product, image, design
Published: 2024-06-01 13:04:54

6ece0efdbfb5f42ba908aa29ed79af918fa52cd16115dac5e021a905ef826b16.jpg
Stainless Steel Plates: A Hygienic Choice For Safe Food Preparation

Introduction

Food preparation and cooking need the use of utensils that guarantee health. The safety of the food are actually being prepared depends upon the tidiness of the surface areas used. Stainless steel plates have actually acquired popularity in the food industry because of their advantages.

Advantages of Stainless Steel Plates
Stainless steel plates are resilient and resistant to scrapes and rust. They are simple to cleanse and preserve, that makes them an hygienic option.  steel plate stainlessare also heat-resistant, creating all of them appropriate for utilize in high-temperature ovens and grills.

Innovation in the Use of Stainless Steel Plates
Innovation in the manufacturing procedure has resulted in the manufacturing of stainless metal plate that are actually thinner however more powerful compared to before. This makes them much a lot extra effective for utilize in the prep work of food. They are also come in various surfaces could be personalized to suit the design of any type of kitchen area.

Safety in the Use of Stainless Steel Plates
Stainless steel plates are actually non-reactive and don't include any type of chemicals hazardous. They are risk-free to utilize in the prep work and offering of meals. Stainless steel plates are also resistant to development microbial which decreases the danger of food contamination.

How to Use Stainless Steel Plates
Stainless steel plates are flexible and could be utilized in a selection of ways. They could be utilized to prep and perform food, in addition to to keep leftovers in the fridge. stainless steel tubing plates can easily also be actually used as a lid makeshift deal with pots and frying pans while cooking.

Service and Quality of Stainless Steel Plates
Stainless steel plates are durable and reputable. They need little bit of upkeep, which indicates they can easily perform their purpose for many years. The quality of stainless steel plates are also constant, guaranteeing every plate purchased meets the exact and same standard.

Application of Stainless Steel Plates
Stainless steel plates are commonly used in restaurants, resorts, and various other meals solution facilities. They are actually also well-known for use in house kitchens as a result of their lots of advantages. Stainless steel plates are appropriate for use in cooking, baking, and food serving.
Fixing the Render Free Tier Sleep Issue for Strapi CMS
Tags: javascript, webdev, cloud
Published: 2024-06-01 13:01:23

I am working on a project where the backend is deployed on Render, using Strapi CMS. One challenge with the Render free tier is that the server goes to sleep after 15 minutes of inactivity. This causes delays when developing the frontend, as the data takes too long to load initially, slowing down my development process.

To address this, I thought of a solution: pinging the server every 10 minutes to prevent it from going to sleep. This way, the response times will remain optimal. I wrote a basic JavaScript program to achieve this.
Let's see the code

```
import axios from "axios";
let i = 1;
async function apiCronJob(){
    try{
            const data = await axios.get("your server endpoitn");
            if(data){
                console.log("request number is: ",i)
            }
            i++;
    }
    catch(e){
            console.log(e)
    }
}


setInterval(apiCronJob,600000);

```


You can run this code in your computer are make a cron job or worker that will run code.

Comment down your solutions
Currying in JavaScript
Tags: javascript, programming, learning, webdev
Published: 2024-06-01 12:56:16

## What is Function Currying in JavaScript ? 🙄🙄

**Currying** is an advanced technique of working with functions. It’s used not only in JavaScript, but in other languages as well.

It is a technique in functional programming, that transforms the function of multiple arguments into several functions of a single argument in sequence. 

The translation of function happens something like this,



![function_currying](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/zw0zedbys4qs16y13qts.png)

Currying is a transformation of functions that translates a function from callable as `f(a, b, c)` into callable as `f(a)(b)(c)`.

<u>**Please note: Currying doesn’t call a function. It just transforms it.**</u>

**How to achieve Currying in JavaScript?**

Currying is not built-in by default in JavaScript. We can implement currying by following the ways

- It can be achieved by using the **`bind()`** method.
- It can be achieved by using the **closures**.
- Using Third-party libraries such as **Lodash**.

1) Currying using **`bind()`** method


![currying_using_bind](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/t3i5imvce9d7k9a1ec1o.png)

2) Currying using **closures** in JavaScript

![currying_using_closure](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/63a3hitpk5q7ce62xpcp.png)

3) Currying using Third-party Library **Lodash**

![currying_using_lodash](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nsako9lt9zsvxt56lf6e.png)

---

**Why is currying useful in JavaScript**

1. **Code re-usability**: Curried functions can be used to create reusable code that can be used in different contexts. Since curried functions can be partially applied, they can be reused with different arguments to create new functions.

2. **Improved code readability**: Curried functions can make code more readable and expressive by breaking down complex logic into smaller, more manageable pieces. This can make it easier for developers to understand and maintain code.

3. It helps us to avoid passing the same variable multiple times.

4. **Promotes functional programming**: Currying is a key concept in functional programming, and using curried functions in your code can promote functional programming practices.

5. It reduces the chances of error in our function by dividing it into multiple smaller functions that can handle one responsibility

**Noted Points: The currying requires the function to have a fixed number of arguments.**

> A function that uses rest parameters, such as **`f(...args)`**, can’t be curried this way.

---

## Summary

Currying in JavaScript is a technique that does the transform and makes `f(a,b,c)` callable as `f(a)(b)(c)`.

## Conclusion
Currying is a great technique that can bring many benefits to JavaScript programming. 

By using the currying technique, you can create more **re-usable**, **maintainable**, and **modular code** that is better suited to the challenges of modern web development.


Thanks for Reading 🙏😇
🌐 Why is front-end development so complicated?
Tags: webdev, javascript, beginners, programming
Published: 2024-06-01 12:55:14

Is front-end development too complex? Today, we'll talk about it.

The goal is to help you understand today's front-end development.

Front-end development is important for any developer. It affects how well web apps work.

Many developers find modern front-end frameworks hard to use. This is because technologies change quickly, and web apps need to be:



- **fast**

- **interactive**

- **easy to maintain**


## Front-end development has become more complex over the years.
Front-end development has changed a lot since the days of jQuery. New frameworks like Angular, React, and Vue have introduced new challenges:


- **State Management**: The web is stateless, so we need strong solutions to manage the state. Angular and React tried to solve these issues but brought their problems.


- **Dependencies**: Many dependencies and tools make project setup harder. While useful, they need regular maintenance. Abandoned packages can also cause issues.


- **SEO and Performance**: Modern frameworks must have good SEO and fast loading times.


- **Web evolution**: Web apps now aim to be as engaging as mobile apps, driving complexity.


- **Complex Modern frameworks**: There are many frameworks available to use.


## State Management Evolution
In the past, managing state in web apps was simple but limited. As apps got more complex, **we needed better state management**. Angular offered a complete solution but it was heavy and complex.**React provided a simpler, component-based approach**.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/rqlnpwjkgd00yw2yjzia.png)

This example shows how React’s useState hook makes state management easy.

## The Dependency Dilemma

Modern front-end projects have many dependencies. They bring great features but you need to manage and update them often. Tools like Webpack and Babel add complexity but are essential.

Managing dependencies is simple. But, you have to keep an eye on updates and compatibility.

## Where to start in front-end development?

First, **master the fundamentals** and then...

I strongly recommend **React**. It's one of the best and most popular front-end frameworks.
React is a safe bet!

## React Developer Roadmap in 6 Simple Steps

1. HTML, CSS, and JavaScript fundamentals

2. Git version control system

3. React fundamentals

4. State management

5. API interaction

6. Testing


## Conclusion
**Front-end development is more complex now**. It's the truth. Yet, this complexity meets the needs of modern web apps.

**Mastering current tools is key to building strong, high-performing web apps**.

Stay willing to learn, improve, and build awesome apps!

Please, comment on your thoughts. Your thoughts are valuable to contribute to the front-end development field. All are welcome! I want to hear them.

Keep up the good work! :)
Metal Manipulation: Understanding Plate Bending Machine Techniques
Tags: machine, product, design, availability
Published: 2024-06-01 12:48:29

Metal Manipulation: Understanding Plate Bending Machine Techniques



Perhaps you have wondered how metal plates can be turned into various forms, such as cylinders or cones? The solution is through the procedure of plate bending, which involves using a plate bending machine. We will talk about the advantages of plate bending, how it works, how to use it properly, their various applications and the importance of service and quality. 

Advantages of Plate Bending
Plate bending has many advantages compared to many other metal developing procedures. It enables the development of aesthetically pleasant and practical products that meet specific design specifications. Plate bending roll is also cost effective in comparison to more developing procedures such as casting or forging. Moreover, plate bending can contour a wide assortment of metal thicknesses and widths while keeping the structural integrity of metal. 

c5365c73c1363e1f084f3e697794ef13ffcfc305f285049b882a90c5c2ec35b5.jpg

Innovation and Safety
Innovation in plate bending roll machine has generated safer environments which will work. Modern machines incorporate safety such as emergency end buttons, interlocks, and guards that counter operator accidents. Operators should get proper classes and certification to operate the machine, ensuring a functional environment is safer. 

How Plate Bending Works
The bending roll machine procedure by choosing the correct metal plate that meets the specs for the project. The metal plate is then clamped between three rollers, and the top roller seeking pressure flexes the metal to your desired form. The exact distance between your rollers adjusts the diameter regarding the bend. Roll bending, pyramid rolling, and induction bending are are some of the numerous plate bending strategies available. 

How to Use a Plate Bending Machine
Using the plate bending machine proper training. The procedure involves running the machine controls, establishing the appropriate diameter, loading metal plate, and then running the machine to bend the metal towards the desired form. The metal plate must feel positioned correctly into the machine, and care needs to be taken up to make the plate does not slip or become hurt through the entire bending procedure. 

Service and Quality
Service and quality are paramount once it boils down to metal fabrication. Dependable products, quality components, and experienced operators needed for meeting task specifications. Structured maintenance regarding the plate bending rolls brake for sale downtime and ensures consistent quality and products. Always check the maker's service and warranty intend to make sure which any pressing issues are settled quickly. 

Applications of Plate Bending
Plate bending has a range of applications in many industries, including construction, production and shipbuilding. It could be put to manufacture pipes, tanks, cones, bridges, and every other curved metal in structured and attractive designs.
Top Flutter Interview Questions and Answers
Tags: flutter, android, ios, web
Published: 2024-06-01 12:47:41

Flutter is an open-source UI software development toolkit created by Google. It is used to develop applications for Android, iOS, Windows, Mac, Linux, Google Fuchsia, and the web from a single codebase. As a fresher preparing for a [Flutter interview Questions](https://www.onlineinterviewquestions.com/flutter-interview-questions/), it’s essential to understand both basic and advanced concepts. There are the top 20 Flutter interview questions and answers to help you prepare.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1utu0gnoqvvy6u5rb3l9.png)

**Q1. What is Flutter?**
Ans: Flutter is an open-source UI toolkit by Google used for building natively compiled applications for mobile, web, and desktop from a single codebase.

**Q2. What is Dart, and why is it used in Flutter?**
Ans: Dart is the programming language used in Flutter. It is optimized for building fast, high-performance mobile, web, and server applications.

**Q3. What are the advantages of using Flutter?**
Ans:

Cross-platform development
Fast development with hot reload
Rich set of customizable widgets
High performance due to native ARM code compilation
Extensive community and Google support
**Q4. Explain the architecture of Flutter.**
Ans: Flutter’s architecture consists of three layers:

Framework: Written in Dart, it includes widgets, rendering, and foundational libraries.
Engine: Written in C++, it provides low-level rendering support via Skia, text layout, and accessibility support.
Embedder: This layer allows Flutter to be embedded into different platforms like Android, iOS, Windows, etc.
**Q5. What is a widget in Flutter?**
Ans: In Flutter, everything is a widget. Widgets are the building blocks of a Flutter app’s UI. They describe what their view should look like, given their current configuration and state.

**Q6. Differentiate between StatelessWidget and StatefulWidget.**
Ans:

StatelessWidget: It does not have any internal state. It is immutable and only depends on its configuration and properties.
StatefulWidget: It has an internal state that can change over time. It can rebuild its UI based on its state.
**Q7. What is the pubspec.yaml file?**
Ans: The pubspec.yaml file is used to define the dependencies and metadata of the Flutter project, such as the project name, version, description, dependencies, and environment.