teleren/devto huggingface dataset:
Usability Testing: The Key to Creating User-Friendly and Effective Products
Tags: design, testing, ux
Published: 2023-03-01 10:00:00

Usability testing is the process of evaluating a product, service, or system by testing it with representative users. By conducting usability testing, developers can identify and fix usability problems early in the development process, before they become more difficult and expensive to fix.

## **What is Usability Testing?**

Usability testing is the process of evaluating a product, service, or system by testing it with representative users. This includes things like:

- Recruiting participants
- Creating test scenarios and tasks
- Observing and recording participants' behavior
- Analyzing the data and identifying usability problems

Usability testing is a crucial step in the development process that helps to ensure that the product, service, or system is easy to use, efficient, and satisfying for the user. It can be done at any stage of the development process, from early prototyping to final product release.

## **The Benefits of Usability Testing**

Usability testing provides numerous benefits for software development, including:

- **Usability:** By identifying and fixing usability problems early in the development process, developers can improve the user's experience and increase the chances of success of the product, service, or system.
- **Efficiency:** By identifying and fixing usability problems, developers can help the user to accomplish their tasks more quickly and easily.
- **Cost-effectiveness:** By identifying and fixing usability problems early in the development process, developers can save time and money that would otherwise be spent on fixing problems later.
- **User-centered design:** By testing with representative users, developers can ensure that the product, service, or system is designed with the user in mind.

## **An Example: A E-commerce Website**

An example of usability testing is an e-commerce website. The development team recruits a group of representative users and creates test scenarios and tasks for them to complete on the website. They observe and record the participants' behavior and analyze the data to identify usability problems.

For example, they may find that the search function is difficult to use or that the checkout process is confusing. Based on this feedback, the team can make adjustments and improvements to the website before it is released to the public.

## **Conclusion**

Usability testing is the process of evaluating a product, service, or system by testing it with representative users. By conducting usability testing, developers can identify and fix usability problems early in the development process, before they become more difficult and expensive to fix. So, make usability testing a part of your development process and see how it can benefit your product, service or system. It's essential to have user-centered design and usability testing to guarantee that your product will be successful and will meet the user's needs and expectations.
5 Reasons Why Vue 3 is the Best Framework for Modern Web Applications in 2023
Tags: javascript, webdev, vue
Published: 2023-03-01 09:56:09

Vue.js is a popular JavaScript framework for building user interfaces, and the latest version, Vue 3, has made significant improvements over its predecessor.
In 2023, Vue 3 is the best framework for building modern web applications. In this article, I will explore the reasons why Vue 3 is the best framework in 2023.

- Improved Performance
Vue 3 has improved performance compared to Vue 2. One of the biggest changes is the new reactive system that uses proxies instead of getters and setters. This change reduces the amount of code required to update a component, resulting in faster rendering times. Vue 3 also includes a new compiler that generates more efficient code, which further improves performance.


- Composition API
The Composition API is a new feature in Vue 3 that makes it easier to organize and reuse code. It allows developers to define component logic as reusable functions that can be easily imported and composed. This approach is more flexible than the Options API in Vue 2, which can become difficult to manage as components grow in complexity.

- TypeScript Support
Vue 3 has better TypeScript support than Vue 2, making it easier to write type-safe code. TypeScript is a superset of JavaScript that adds static typing, which can help catch errors at compile-time instead of runtime. With Vue 3, developers can write components with TypeScript and take advantage of features like type inference and auto-completion.

- Better Error Handling
Vue 3 has improved error handling compared to Vue 2. When an error occurs in a component, Vue 3 provides more detailed error messages that make it easier to diagnose and fix the issue. Additionally, Vue 3 has a new error boundary component that can catch errors and prevent them from crashing the entire application.

- Scalability
Vue 3 is designed to be more scalable than Vue 2. The reactive system has been redesigned to handle large-scale applications with hundreds or even thousands of components. Additionally, the Composition API makes it easier to organize and reuse code, which can help keep applications maintainable as they grow.


In conclusion, Vue 3 is the best framework in 2023 for building modern web applications. It offers improved performance, a flexible Composition API, better TypeScript support, improved error handling, and better scalability. If you are considering using a JavaScript framework for your next project, Vue 3 is definitely worth considering.
Artifact hub
Published: 2023-03-01 09:54:47

Discovering artifacts to use with CNCF projects can be difficult. If every CNCF project that needs to share artifacts creates its own Hub this creates a fair amount of repeat work for each project and a fractured experience for those trying to find the artifacts to consume. 

The Artifact Hub attempts to solve that by providing a single experience for consumers that any CNCF project can leverage.

Artifact Hub is a web-based application that enables finding, installing, and publishing packages and configurations for CNCF projects. 

For example, this could include Helm charts and plugins, Falco configurations, Open Policy Agent (OPA) and Gatekeeper policies, OLM operators, Tinkerbell actions, kubectl plugins, Tekton tasks and pipelines, KEDA scalers, CoreDNS plugins, Keptn integrations, container images, Kubewarden policies, Kyverno policies, Knative client and Backstage plugins.

artifacthub.io runs on AWS, using an account owned by the CNCF and managed by the Artifact Hub maintainers. 

https://artifacthub.io/ . 

Site provides default values yaml file in better format and details descriptions of dependencies and upgrade tips. 

that's the post :)
The point release Corteza 2022.9.7 is already a fact!
Tags: release, updat, opensource, lowcode
Published: 2023-03-01 09:50:59

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/m223x7q7kd0gpjde43x0.png)

🖥️🎉A new update of the Corteza 100 % open-source low-code, rapid application development, business process and integration platform has been released! The platform is developed and maintained by Planet Crust.

Check out the new features, changes and fixes of Corteza 2022.9.7: https://www.planetcrust.com/planet-crust-releases-corteza-2022-9-7
The Best application to Learn English
Published: 2023-03-01 09:31:35

Do You want to Learn English, But you Don't know How ?
it's easy Now I will provide [the best app which learning English](https://istoria.app/) in easy way by Grader Leaders 

What Wait !!
Download the app Now & Learn English in 3 month

[From Here ](https://istoria.sa/landingpage/)



![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/glifb3xhu2n6ppepbmxb.jpeg)
Python Django User Interface
Tags: python, mongodb, webdev, django
Published: 2023-03-01 09:19:02

> To make use of Mongo database collections and to omit command line interface interactions, planned to create a user interface based on Python Django tech stack.


- Developed a UI which has a MongoDB based data extraction
mechanism.

- Button Based UI which is easily accessible over internal platform and preferably less functionalities than the Mongo Atlas to enjoy the comfort of less information.

- CRUD operations can be performed onto the UI which is deployed into production via internal servers.

- Integrated Role Based Access Control **(RBAC)** Mechansism in user creation model of Mongo UI.

- Worked on Real time IDE creation and developed UI Frontend design taking all the requirements under consideration.

- Converted the conventional update of data to streamline
flow via Django based UI. 

- Reduced the human intervention and execution time and automated the workflow.
Developing Efficient Serverless Applications with AWS Lambda
Tags: aws, books, serverless, lambda
Published: 2023-03-01 08:01:18

{% youtube LY_vsa2ohJM %}
“[Mastering AWS Lambda](https://rebrand.ly/devshelf-002)” by Yohan Wadia and Udita Gupta is a comprehensive guide to building and deploying serverless applications on Amazon Web Services (AWS). The book covers all the essential concepts of serverless computing and focuses on the use of AWS Lambda as the platform for implementing serverless applications. The authors provide clear and concise explanations of the core concepts and features of AWS Lambda, along with hands-on examples and best practices for building scalable and robust serverless applications.

**What Does This Book Cover?**

The book starts with an introduction to serverless computing and its benefits, followed by a deep dive into the various components of AWS Lambda, such as triggers, functions, and event sources. The authors also cover topics like security, monitoring, and troubleshooting, providing guidance on how to build and deploy secure and reliable serverless applications. Additionally, the book covers advanced topics such as serverless architectures, custom domains, and edge computing.

> Chapter 1: Introducing AWS Lambda
> Chapter 2: Writing Lambda Functions
> Chapter 3: Testing Lambda Functions
> Chapter 4: Event-Driven Model
> Chapter 5: Extending AWS Lambda with External Services
> Chapter 6: Build and Deploy Serverless Applications with AWS Lambda
> Chapter 7: Monitoring and Troubleshooting AWS Lambda
> Chapter 8: Introducing the Serverless Application Framework
> Chapter 9: AWS Lambda — Use Cases
> Chapter 10: Next Steps with AWS Lambda

One of the strengths of this book is its hands-on approach. Throughout the book, the authors provide step-by-step instructions and code samples to help readers understand how to build and deploy their own serverless applications on AWS. This approach makes the book an excellent resource for developers who are new to serverless computing, as well as those who are looking to expand their knowledge and skills.

I think “[Mastering AWS Lambda](https://rebrand.ly/devshelf-002)” is a well-written and comprehensive guide to building and deploying serverless applications on AWS. The authors have done an excellent job of explaining complex concepts in a clear and concise manner, making it an accessible resource for developers of all levels. If you are looking to dive into the world of serverless computing or want to learn more about AWS Lambda, I highly recommend this book.

📚[Get the Book in Amazon](https://rebrand.ly/devshelf-002)

---

[![DevShelf](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/v04cas2nc9gcvaznw3va.jpg)](https://devshelf.co/)
What Non-Technical Skills Do You Need for a Successful Career in Tech?
Tags: discuss, beginners, codenewbie
Published: 2023-03-01 08:00:00

When it comes to a successful career in tech, it's not just about technical skills. Non-technical skills are just as important, if not more so! Some examples of non-technical skills that can help you succeed in tech include:

- Communication
- Leadership
- Time management
- Collaboration
- Critical thinking

What other, maybe less obvious. non-technical skills do you think are important for a career in tech? Share your thoughts in the comments below!
Explain ER Model in details
Tags: database, dbms
Published: 2023-03-01 07:57:43

## What is an ER Model in DBMS?

An [Entity-Relationship (ER) Model](https://www.thestudygenius.com/er-model-in-dbms/) is a type of data model used in database management systems (DBMS) to describe and visualize the relationships between entities in a database. The ER model is a graphical representation that uses rectangles to represent entities, diamonds to represent relationships, and lines to connect them.

**The three most important things to know about ER models are:**
- Entities are represented as rectangles in an ER model. Each entity represents a real-world object or concept, such as a person, place, or thing.
- Relationships are represented as diamonds in an ER model. Relationships describe the connections or associations between entities. There are three types of relationships: one-to-one, one-to-many, and many-to-many.
- Attributes are represented as ovals attached to entities in an ER model. Attributes describe the characteristics or properties of entities, such as a person's name or age.

### What is the purpose of an ER Model?

**Visualize the relationships between entities:** ER models provide a graphical representation of the relationships between entities, making it easy for users to understand how data is related.
**Define the data structure:** ER models define the structure of the database, including the entities, relationships, and attributes, making it easier for developers to design and build the database.
**Document the database:** ER models serve as documentation for the database, making it easier for developers and users to understand how the database is structured and how the data is organized.
Zombie Gun War PICO-8 Game
Tags: gamedev, showdev, lua, pico8
Published: 2023-03-01 07:40:38


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ifedjmo9mgiw1dwqpm3g.png)

[https://takaneichinose.itch.io/zombie-gun-war](https://takaneichinose.itch.io/zombie-gun-war)

## Zombie Gun War

### Controls

- Up arrow key: Move menu to above
- Down arrow key: Move menu to below
- Left arrow key: Move left
- Right arrow key:  Move right
- Z: The 'O' button (Select from menu, or shoot fireball)

### Description

Test your reflexes with this game! Fight with the computer, shoot your fire ball, or dodge the computer's fire ball. Anyway, just try to win against the computer.

The rule of this game is simple. You may just move left, or right, then shoot fireball with 'z' key or 'O' button.

I created this game using PICO-8. A fantasy console inspired the game console in the 80s.

#### There are 3 difficulties in this game

- Easy: The computer will shoot fireball randomly.
- Medium: The dodge threshold and move response is higher.
- Hard: The dodge threshold and move response is much higher.
The Mystery of Expert Intuition (Preview)
Tags: beginners, webdev, programming, learning
Published: 2023-03-01 07:25:35

---
title: The Mystery of Expert Intuition (Preview)
published: true
description: Is It Magic, or Something Else?
tags: beginners, webdev, programming, learning
# cover_image: https://direct_url_to_image.jpg
# Use a ratio of 100:42 for best results.
# published_at: 2023-03-01 07:19 +0000
---

![Image Expert Intuition decisino](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/u0oxs1teihr6b69gpklg.png)

Have you ever been in a highly complex situation with an expert and out of no where they just have an answer instantaneously ?

And when asked about how they knew, they just reply with “trust me, I just know” or “I had a hunch”.

How is it that they are able to do this instantaneously, and with high accuracy ?

Is it Magic ? Or is it something else ?

We’re going to get to the bottom of this!

In the book “Thinking fast and slow” by Daniel Kahneman, he presents two models to better understand this phenomenon which is referred to as expert intuition.

**🧠 𝗧𝗵𝗲 𝘁𝘄𝗼 𝗺𝗼𝗱𝗲𝗹𝘀 𝗳𝗼𝗿 𝗲𝘅𝗽𝗲𝗿𝘁 𝗶𝗻𝘁𝘂𝗶𝘁𝗶𝗼𝗻 𝗮𝗿𝗲:**

1️⃣  **Dr. Gary Klein’s model** (high validity intuition)

2️⃣  **Dr. Paul Meehl’s model** (low validity intuition, statistical method)

These results are from years of research on studying clinicians, surgeons, firefighters, nurses, military operations, business operations, stock pickers and pundits.

We’re going to dive deep into the inner workings of both of these models to dispel some of this “magic” that goes on.

**💡 𝗪𝗵𝘆 𝗶𝘀 𝘁𝗵𝗶𝘀 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 𝗳𝗼𝗿 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹𝘀 ?**

* **𝗗𝗲𝗰𝗶𝘀𝗶𝗼𝗻 𝗠𝗮𝗸𝗶𝗻𝗴** - It will help us to better understand what is behind this seemingly “magical” decision making process (That experts use)




* **𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴** - It will also provide insights on how to build expertise


- **𝗗𝗶𝘀𝗰𝗲𝗿𝗻𝗺𝗲𝗻𝘁** - It will help us understand in what situations should you supplement expert intuition with other decision making methods

I will be posting a lot more about this topic in the coming weeks.

It’s going to be a good one so stay tuned!

Make sure you like this post, and be sure to follow me 👉 @jareechang
How to create an Empty Vector in C++?
Tags: c, vectors
Published: 2023-03-01 07:04:34

While storing data in our programming the first thing what comes in mind of a programmer is array. Arrays are one dimensional as well as multi-dimensional (2D arrays …..) so arrays are best for storing data but there is a limit for arrays to store data and the programmer needs to specify size of array before storing data at time of creation of array.
Here to solve this huge problem, we use vectors. Vectors allow us to store unlimited amount of data (until our ram capacity is free). Vectors are helpful because they keep updating on storage of data and keep increasing their size. We can say that vectors manage their size themselves.
Vector is a part of STL(standard template library) which may also be called dynamic arrays.
In order to create an empty vector, first of all you need to include header file named vector. You can include that as follows:

#include <vector>

Then in the function where you want to use vector, you can create is by specifying datatype of vector and vector name as follows:

vector <datatype> vectorName;
The data type can be int , double, string or char and for vector name all rules for variable naming apply.
So here is a C++ program to create an empty vector of integers.

#include <iostream>  //Include input output stream
#include <vector>   //Including vector header file which allows us to use vectors
using namespace std;  //using standard namespace
int main(){
Vector <int> v;
Return 0;
}
Now the vector is created. If you want to add the data in vector you can do this by using function push_back(data). So in the vector we created we will add some values.

#include <iostream>
#include <vector>
using namespace std;
int main(){
vector <int> v;
v.push_back(5);
v.push_back(10);
v.push_back(2);
return 0;
}
The above code will create vector and will add 5, 10 and 2 in the vector. Consider it an array where we have first element at index 0 , second at index 1 and so on.
So we have 5 at index 0 , 10 at index 1 and 2 at index 2;
In order to access data from vector, we can do it like we do in array.

#include <iostream>
#include <vector>
using namespace std;
int main(){
vector <int< v;
v.push_back(5);
v.push_back(10);
v.push_back(2);
cout<<v[0];    //it will show 5 at index 0
cout<<v[1];//It will show 10 at index 1
return 0;
}
Like this we can create and use a vector in C++.
In order to study more about vectors you can check <a href="https://8thesource.com/">8thesource</a> for more such topics
Top 9 JavaScript Flavours
Tags: javascript, typescript, reason, programming
Published: 2023-03-01 06:33:33

## 1. TypeScript
TypeScript is a strongly typed programming language that builds on JavaScript, giving you better tooling at any scale.


https://www.typescriptlang.org/
![Typescript js](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/tyizn90hvger7podejzi.png)




## 2. Reason
Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.

https://reasonml.github.io/

![Reasonjs](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4ljn4gqncax34mzj0kz9.png)


## 3. Flow
FLOW IS A STATIC TYPE CHECKER FOR JAVASCRIPT.
https://flow.org/

![Flow js](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/lsabnmw5hvj39ehb2kcy.png)



## 4. Elm
Elm uses type inference to detect corner cases and give friendly hints. ... benchmarks show that this helps us generate particularly fast JavaScript code.

https://elm-lang.org/

![Elm js](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/yd98nuryrnw863k0m9z4.png)


## 5. ClojureScript
Clojure is a dynamic, general-purpose programming language supporting interactive development. Clojure is a functional programming language featuring a rich set of immutable, persistent data structures. As a dialect of Lisp, it has a code-as-data philosophy and a powerful macro system.

https://clojurescript.org/

![ClojureScript](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/60ux6sq348bigqpmf0ax.png)



## 6. PureScript
A strongly-typed functional programming language that compiles to JavaScript 

https://www.purescript.org/

![PureScript](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xymf02vbex1ptcvmyijl.png)



## 7. CoffeeScript
CoffeeScript is a little language that compiles into JavaScript. Underneath that awkward Java-esque patina, JavaScript has always had a gorgeous heart.

https://coffeescript.org/

![CoffeeScript](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/a0yaue5ln3ip0eyw1syt.png)


## 8. ReScript
ReScript is a robustly typed language that compiles to efficient and human-readable JavaScript.
https://rescript-lang.org/

![ReScript](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/p3gskp90q8y8l4kx5xnw.png)


## 9. Imba
Imba is a Web programming language that's fast in two ways: Imba's time-saving syntax with built-in tags and styles results in less typing and switching files so you can build things fast. 
https://imba.io/

![Imba](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xxziroir3t434dnqe3gv.png)


Which one is your favorite ?
Zerando HackerRank ( 4 )
Published: 2023-03-01 06:27:35

Neste desafio o problema a ser resolvido aborda uma array de 5 números, destes 5 números devemos receber 2 valores, o primeiro é a soma máxima usando 4 elementos e a soma mínima usando também 4 elementos.
A estratégia utilizada para resolver esse problema é primeiro a soma dos 5 valores da array, apos isso a identificação do maior e menor item da lista, no caso do valor máximo seria o valor total menos o valor mínimo e no caso do valor mínimo seria a soma de todos os itens menos o valor da maior.

Primeira parte da função sera destinada ao valor total, vai ficar desta forma:

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/5hysg0binxegztuacrd0.png)

Utilizando a função reduce a representação "acc"(valor acumulado) mais a somada do valor "cur"(valor atual) vai resultar no valor total.

Apos isso o próximo passo seria encontrar o valor maior da lista e o menor, para isso podemos usar o método Math, ficando assim:

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7adpmzc5umclm7pvbg4l.png)

Depois disso é só apresentar o resultado em um console.log.

Utilizando essas logicas nossa função vai ficar assim:

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/19jssopgt7uxw3j9dh5l.png)