teleren/devto huggingface dataset:
LM380 vs LM386: What are Differences and How to Choose
Tags: audio, amplifier, discuss, learning
Published: 2023-08-17 06:44:10


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/bwt6xeyl6krljettn4nz.png)The LM380 and LM386 are two popular audio amplifier integrated circuits that have earned their place in the world of electronics due to their compact size and audio amplification capabilities. While both ICs are designed to amplify audio signals, they differ in terms of features, performance, and applications.


## Part 1. What are Audio Amplifier Integrated Circuits

Audio amplifier integrated circuits (ICs) are electronic devices designed to amplify low-power audio signals from sources like microphones, musical instruments, or audio players. These ICs provide the necessary gain and power to drive speakers, headphones, or other audio output devices. They are commonly used in a wide range of applications to enhance the volume and quality of audio signals.


Audio amplifier ICs come in various configurations and power levels to accommodate different audio system requirements. They can be used in devices such as audio receivers, portable speakers, headphones, intercom systems, radios, musical instruments, and more. These ICs simplify circuit design by integrating amplifier circuitry into a single package, reducing the need for external components and simplifying the overall design process.

## Part 2. What is LM380

The LM380 is a type of integrated circuit (IC) or chip that functions as an audio amplifier. It is designed to amplify low-power audio signals to a level suitable for driving speakers or headphones. The LM380 is commonly used in various audio applications, such as portable radios, intercom systems, small public address (PA) systems, and other electronics where audio amplification is needed.

## Part 3. What is LM386

The LM386 is a widely used audio amplifier integrated circuit (IC) that is designed to amplify low-power audio signals. It's a popular choice for various audio applications due to its simplicity, ease of use, and relatively low component count. The LM386 is commonly used in projects where amplifying audio signals from sources like microphones, radios, or other audio devices is necessary.

Read more: [LM380 vs LM386: What are Differences and How to Choose](https://www.avaq.com/technology/lm380-vs-lm386-what-are-differences-and-how-to-choose)
TikTok Clone App Development: Top Features To Consider For Success
Tags: tiktokclone, tiktokcloneapp, tiktokclonescript
Published: 2023-08-17 06:40:58

Create a captivating and engaging social media experience with our TikTok clone app development service. Seamlessly replicating the renowned platform, our clone app incorporates top-notch features essential for success. From seamless video playback and intuitive user interface to real-time interactions and customizable filters, we ensure your clone app captivates users and keeps them entertained. Join the thriving short-form video trend with our expertly crafted TikTok clone, designed to elevate your social media venture.


Kindly Reach Us On:

https://www.trioangle.com/tiktok-clone/
sales@trioangle.com
+91 6379630152
Simple custom hook to figure out which state change triggered an effect in React
Published: 2023-08-17 06:05:37

In React applications, the useEffect hook is a powerful tool for handling side effects and component lifecycle events. However, sometimes you might find it useful to know which specific props triggered an useEffect callback. This can be particularly handy when dealing with optimizations or debugging. In this blog post, we'll explore a custom hook named useWhichPropsChanged that allows you to easily identify the props responsible for triggering an useEffect call.

The Custom Hook - useWhichPropsChanged:

```jsx
import React from 'react';

const useWhichPropsChanged = (initialProps) => {
  const propsRef = React.useRef(initialProps);
  return (currentProps) => {
    const pKeys = Object.keys(propsRef.current);
    pKeys.forEach((ele) => {
      if (propsRef.current[ele] !== currentProps[ele]) {
        console.log(`prop ${ele} has changed...`);
      }
    });
    propsRef.current = currentProps;
  };
};
```
Using the Hook in a Component:

```jsx
import React, { useEffect } from 'react';

const Component = (props) => {
  const { propsRequiredForSomeApiCall } = props;
  const whichPropsChanged = useWhichPropsChanged(propsRequiredForSomeApiCall);

  useEffect(() => {
    whichPropsChanged(propsRequiredForSomeApiCall);
    // Perform some API call or other side effects
  }, [propsRequiredForSomeApiCall]);

  return <></>;
};
```

How It Works:
The useWhichPropsChanged hook utilizes React's useRef to store a reference to the previous props. The returned function takes the current props as an argument and iterates over the keys of the stored props. If the current value of a prop differs from the stored value, a log message is generated indicating which prop has changed. After processing, the stored props are updated to match the current props, allowing for future comparisons.
Customize React Dropdown Tree Items Using Templates
Tags: webdev, react
Published: 2023-08-17 05:51:09

Learn how easily you can customize Syncfusion React Dropdown Tree items using templates. In this video, you will learn how to customize Syncfusion React Dropdown Tree items and use the custom template to display selected items. You will see how to add a header and footer to the Dropdown Tree pop-up. 

The Dropdown Tree displays a hierarchical list of pre-defined values from which you can choose and display a single value in a text box. The React Dropdown Tree component is a textbox component that allows users to select single or multiple values from hierarchical data in a tree-like structure. It has several out-of-the-box features, such as data binding, check boxes, templates, UI customization, accessibility, and preselected values. 

The React Dropdown Tree component allows you to create a hierarchical dropdown menu, enabling users to select items from different levels of hierarchy. This can be particularly useful when dealing with complex data structures or when you need to offer users a way to navigate through a categorized list of options. 

**Product overview:** https://www.syncfusion.com/react-components/react-dropdown-tree

**Tutorial video:** https://www.syncfusion.com/tutorial-videos

**Download the example from GitHub:** https://github.com/SyncfusionExamples/customize-react-dropdown-tree-items-using-templates

{% youtube hn8ol_El4U8 %}
Your approach to code exercise interviews has always been wrong
Tags: interview, developers, career
Published: 2023-08-17 05:44:20

The right mindset to give your best

The time has come, as you open your laptop and launch the video-conference software you have been instructed to use, you start the call and boom. The interview that can change your life starts, you feel nervous, not sure what they will ask you and if you remember all the answers. You prepared yourself for this a lot. You read a lot of books about algorithms, data structures and exercises on pointers because after all is not what they ask all the time? Is not that what they are going to evaluate you on?
You can nail your code exercise interview by using the best algorithm you learned and be done in less than 5 minutes without saying a word.
The interviewers don't look impressed and ask you a lot of follow-up questions and you start wondering what you did wrong.

--

Let's take a step back. You have 45 minutes to show your best likewise the interviewers have 45 minutes to understand what you can bring to the company. What are they looking for to have a good evaluation of you, to figure out if you are a person they would like to work with?
They want to figure out how you would approach a problem you are not familiar with.

## Talk a lot
Let's face the truth. Forty-five minutes are not a lot of time and being silent is not the best use of the time available. Before start doing anything, tell them how you are going to approach it. Voice any doubts you have and explain why you changed strategy if that happens. Changing your mind is not a sign of weakness is a sign of an open mind.
No one knows everything or remembers everything. If you don't remember something then ask for help, if you have any doubt or got stuck ask questions to unblock yourself, don't wait for the interviewer to give you hints or advice.

## Offer multiple solutions
A coding exercise is nothing close to real life; most of the time, there is no silver bullet. It is important to clarify why you are picking a specific solution and offer others based on different tradeoffs. Think about the scalability or complexity of your solution and try to offer a potential strategy to address them later while you get a working solution first.

## Don't let the perfection ruin everything
It should be clear that a perfect solution is not something to strive for. Start always with a naive one and improve it until you run out of time or ideas. Offer suggestions on how your code will be tested ahead of time. Pay attention to all potential edge cases and always test the preconditions.

## Closing
A working solution is expected but it is not the most important part of a coding interview. The journey from the exercise asked and the working solution is.
Next time you will find yourself preparing for a coding interview not only refresh your memory on algorithms and data structures but train yourself to get into the right mindset and that means to start small, pay attention to the details, include the interviewers in your team as you all are part of a team.
Creating a Real-Time Hand Tracking Application with MediaPipe and OpenCV
Tags: machinelearning, python, mediapipe, opencv
Published: 2023-08-17 05:39:20


![Image Sample](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/h3zwc0smf1i1pzcd4mlh.jpg)
Welcome to an exciting journey into the world of computer vision! In this blog, we'll guide you through building a real-time hand tracking application using two powerful Python libraries: MediaPipe and OpenCV. By the end of this page, you'll be able to create an application that can detect and track hand landmarks in a video stream, paving the way for interactive experiences, gesture recognition, and more.

**Prerequisites**
Before we begin, ensure that you have both the `mediapipe` and `opencv-python` libraries installed. You can install them using the following command:
```bash
pip install mediapipe opencv-python
```

**Step 1: Initializing the Environment**
Let's start by importing the necessary libraries and initializing some variables:
```python
import mediapipe as mp
import cv2
import time

# Initialize the video capture
cap = cv2.VideoCapture(0)

# Initialize the hand tracking model
mpHands = mp.solutions.hands
hands = mpHands.Hands()

# Initialize the drawing utility
mpDraw = mp.solutions.drawing_utils

# Initialize time variables
pTime = 0
cTime = 0
```

**Step 2: The Tracking Loop**
Next, we'll create an infinite loop to continuously process frames from the video capture and perform hand tracking:
```python
while True:
    success, img = cap.read()

    imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
    result = hands.process(imgRGB)

    if result.multi_hand_landmarks:
        for handLms in result.multi_hand_landmarks:
            mpDraw.draw_landmarks(img, handLms, mpHands.HAND_CONNECTIONS)
    
    cTime = time.time()
    fps = 1 / (cTime - pTime)
    pTime = cTime

    cv2.putText(img, str(int(fps)), (10, 70), cv2.FONT_HERSHEY_PLAIN, 3, (255, 0, 255), 3)
    cv2.imshow("Hand Tracking", img)
    
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
```

**Step 3: Wrapping Up**
Lastly, we need to release the video capture resources and close the OpenCV windows when we're done:
```python
cap.release()
cv2.destroyAllWindows()
```

**Conclusion**
Congratulations! You've successfully built a real-time hand tracking application using MediaPipe and OpenCV. This application can detect and visualize hand landmarks while displaying the frames per second (FPS) on the video stream. Now you have a solid foundation to explore further and integrate hand tracking into various projects, from virtual reality interactions to creative gesture recognition applications.
Expert Corporate Tax Services in Dubai and UAE
Published: 2023-08-17 05:22:13

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📢 Demystifying Sandwinch Attacks 🚨
Tags: defi, web3, hacks, tutorial
Published: 2023-08-17 05:19:56

Sandwinch attacks are most common in DeFi. In our latest article, we explain how they are performed using 🏗️ Scaffold-Eth and 🐻 BuildBear.

🔗 Check out the tutorial here:
https://www.buildbear.io/resources/guides-and-tutorials/Sandwich_Attack
Node js
Tags: node, whatisnodejs
Published: 2023-08-17 05:04:16

•	what is node JS
Node JS is an open-source, cross-platform, back-end JavaScript runtime environment it runs on v8 engine

Node.js is commonly used for building web servers, APIs (Application Programming Interfaces), real-time applications, microservices, and other networked and I/O-intensive applications

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/07xhow81vjkbz4mnen1h.png)
I have problem with cluster postgre after I change node IP
Tags: patroni
Published: 2023-08-17 04:34:57

data from node syncstandby is not sync data from leader and error log: 

ERROR: Exception when working with leader
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/patroni-3.0.2-py3.6.egg/patroni/postgresql/rewind.py", line 69, in check_leader_is_not_in_recovery
    with get_connection_cursor(connect_timeout=3, options='-c statement_timeout=2000', **conn_kwargs) as cur:
  File "/usr/lib64/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/usr/local/lib/python3.6/site-packages/patroni-3.0.2-py3.6.egg/patroni/postgresql/connection.py", line 43, in get_connection_cursor
    conn = psycopg.connect(**kwargs)
  File "/usr/local/lib/python3.6/site-packages/patroni-3.0.2-py3.6.egg/patroni/psycopg.py", line 42, in connect
    ret = _connect(*args, **kwargs)
  File "/usr/local/lib64/python3.6/site-packages/psycopg2/__init__.py", line 121, in connect
    dsn = _ext.make_dsn(dsn, **kwargs)
  File "/usr/local/lib64/python3.6/site-packages/psycopg2/extensions.py", line 167, in make_dsn
    parse_dsn(dsn)
psycopg2.ProgrammingError: invalid dsn: invalid connection option "target_session_attrs"

please help me, I dont know why It happen
Error: Could not find a suitable provider for virt
Tags: puppet
Published: 2023-08-17 03:40:03

Hi there, I am trying to bring up a VM  using KVM hypervisor in Ubuntu 23.04 with Puppet7. Are there any tutorials available to make this work?

I am facing the below error while running site.pp file:
`Error: Could not find a suitable provider for virt`

Using this virt module: https://forge.puppet.com/modules/carlasouza/virt

Any help would be appreciated, thanks!
📚 Beginner's Guide: Troubleshooting React's 5 Common Slip-Ups 🧩
Tags: react, webdev, programming
Published: 2023-08-17 03:00:00

**1. 🚦 Passing Props and Handling Input: Avoiding Common React Slip-Ups 🚀**

**Mistake:** Passing props directly as input values and using `onChange` to modify the input value.

```
<input value={props.value} onChange={handleChange} />
```
**Correction:** Use props to set the initial input value and controlled component pattern with state to manage input changes.

```
<input value={stateValue} onChange={handleChange} />
```

**2. 🔌 Missing onChange: Fixing Input Mistakes in React 🛠️**

**Mistake:** Not defining an onChange function to handle input value changes.

```
<input value={stateValue} />
```

Correction: Define an onChange function to update the state when the input value changes.

```
<input value={stateValue} onChange={handleChange} />
```

**3. 🛑 Using Divs as Buttons: Better Practices in React UI 🌟**

**Mistake:** Using a div as a button element and attempting to disable it.

```
<div onClick={handleClick} disabled={true}>Click me</div>
```
**Correction:** Use a proper button element for interactions and apply the 'disabled' attribute.

```
<button onClick={handleClick} disabled={true}>Click me</button>
```

**4. 🗺️ Mapping Without Returning JSX: Navigating React Arrays 🚀**

**Mistake:** Not writing return in array map and const declaration.

```
const items = data.map((item) => {
  <div key={item.id}>{item.name}</div>
});
```

**Correction:** Explicitly return JSX elements from the map function.

```
const items = data.map((item) => (
  <div key={item.id}>{item.name}</div>
));
```

**5. ⚙️ Calling Functions in Event Handlers: React's Event Handling Tips 💡**

**Mistake:** Calling a function directly in the onChange event handler.

```
<input value={stateValue} onChange={handleChange()} />
```

**Correction:** Pass the function reference without invoking it in the event handler.

```
<input value={stateValue} onChange={handleChange} />
```

Learning React.js can be challenging, but by understanding and avoiding these common mistakes, you'll be on your way to writing more robust and efficient React code. Remember, everyone makes mistakes, and the key is to learn from them.

I hope this post helps you navigate these pitfalls and enhances your journey with React.js. If you have any questions or suggestions, feel free to leave a comment below!
AWS - API Gateway to SQS
Published: 2023-08-17 02:36:45

**1. IAM 정책 생성**
- SQS 권한 추가 (ID에는 AWS 계정ID)
![iam-s3](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ilrz03xg7bsplou1xoje.png)

**2-1. IAM 역할 생성**
- API Gateway 서비스 선택 후 역할 생성
![iam-role](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vjrivj9somfif7ge9p58.png)

**2-2. IAM 역할 권한 추가**
- 생성한 역할에 정책연결을 통해 생성한 권한 추가
![iam-role-access](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/m4h8f7zmspzex3a1fc8w.png)

**3. API Gateway 생성**
- REST API 구축
- REST API 이름 설정 및 API 생성 (API Gateway 내부에서 dv/prod 등 스테이지 구분 가능)

**4-1. 리소스 생성**
- 리소스 이름 지정 + 경로 지정
![create-resource](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/88yqiwa9oqx0i3w5w8bw.png)

**4-2. 메소드 생성**
- AWS 서비스 SQS 선택
- 경로 재정의를 사용하여 SQS로 전송 (경로는 현재 예시 기준 `ID/api-gateway-to-sqs` 경로 패턴: `${AWS 계정ID}/${SQS-이름}`)
- 실행 역할은 위에서 생성한 IAM 역할의 arn 값
![create-method](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/q0fj84bopbg2c7z52ohd.png)

**5. 메소드 상세 설정**
- 통합 요청 탭에서 HTTP 헤더 설정 및 매핑 템플릿 추가
- 템플릿
```
Action=SendMessage&MessageBody=$input.body
```
![mapping-template](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/17uqcskmpq4knt90blin.png)

**6. 테스트**
- 테스트에서 테스트 요청이 가능함.
- 응답 본문에 messageId 확인 + 경로로 지정한 SQS의 사용가능한 메시지 개수 확인.

**FYI.**
- stage변수 사용방법
    - stage 배포 및 stage 변수 추가 후 `${stageVariables.변수명}`으로 사용가능.


cf.
- https://www.youtube.com/watch?v=_U_PiSpbWug
- https://www.youtube.com/watch?v=v8cqDXyHZ4Y
Giả mã bí ẩn giấc mơ
Published: 2023-08-17 02:33:35

Giải mã điềm báo - Tra cứu sổ mơ tìm hiểu các con số bí ẩn đứng đằng sau. Tổng hợp gần 2.000 giấc mộng, giải mộng chính xác nhất.
Xem chi tiết tại:

https://xosotailoc.net/mo-thay-trung-ga-mang-y-nghia-gi/
https://xosotailoc.net/nam-mo-thay-trung-vit-danh-so-may/
https://lichbongdahomnay.com/mo-xay-nha-danh-con-gi/
https://lichbongdahomnay.com/mo-thay-chay-nha-la-diem-hung-hay-cat/
https://soicauxs.org/mo-thay-tien-100-danh-con-gi-la-diem-hen-hay-xui/
https://kqxs360.net/mo-thay-con-tran-so-may-danh-con-gi-thang-lon/
https://soicauxs.org/mo-thay-tien-le-danh-con-gi/
https://kqxs360.net/ngu-mo-thay-con-gian-so-may/
https://kqxs360.net/chiem-bao-thay-con-oc-so-may/
https://xoso360.net/mo-thay-cho-trang-danh-con-gi/
https://xoso360.net/nam-mo-thay-cho-con-danh-con-gi/
A clone of Google Maps using React.js
Tags: maps
Published: 2023-08-18 07:46:13

---
title: A clone of Google Maps using React.js
published: true
date: 2023-08-17 00:46:00 UTC
tags: Maps
canonical_url: https://reactjsexample.com/a-clone-of-google-maps-using-react-js/
---

# Google Maps Clone (Gatere Maps)
 ![A clone of Google Maps using React.js](https://reactjsexample.com/content/images/2023/08/code_2023-16-15-40-54.jpg)

This project is a clone of Google Maps, the popular web mapping service that offers satellite imagery, street maps, 360° panoramic views of streets, real-time traffic conditions, and route planning.

[

![A clone of Google Maps using React.js](https://camo.githubusercontent.com/97ef1ac9d964016eb14d349e238fe080398af7649010649aa054ddc29e430b08/68747470733a2f2f666972656261736573746f726167652e676f6f676c65617069732e636f6d2f76302f622f686f6d65746f7069612d64323234662e61707073706f742e636f6d2f6f2f676d617073322e706e673f616c743d6d6564696126746f6b656e3d34303235376236382d306434652d343161362d613034372d646239646538353438656330)

](https://g-maps-clone.vercel.app/)

* * *

## Technologies Used

- [ReactJS](https://react.dev/) : A JavaScript library for building user interfaces.
- [Tailwind CSS](https://tailwindcss.com/) : A utility-first CSS framework for rapidly designing responsive web pages.
- [Maps API](https://developers.google.com/maps/documentation/javascript): Used for rendering the interactive maps.
- [GeoCoding API](https://developers.google.com/maps/documentation/geocoding): Integrated for location search functionality.
- [Vite](https://vitejs.dev/) : A fast and efficient build tool for modern web development.
- [Vercel](https://vercel.com/) : A cloud platform for static site deployment.

## Features

- Interactive map interface similar to Google Maps.
- Search for locations using the integrated GeoCoding API.
- Search for a location using coordinates.
- Street view: You can explore the streets of any location in the world.
- Utilizes React Icons for consistent and attractive UI elements.

## Getting Started

To get started with Gatere Maps locally, follow these steps:

1. Clone the repository:

2. Install the dependencies:

3. Register for a Maps API via Google Cloud

4. Start the development server:

5. Open your browser and visit specified local host port to view the app eg. `http://localhost:5173`

## Deployment

Gatere Maps is deployed using Vercel. Any changes pushed to the main branch will trigger an automatic deployment. You can visit the live version of HomeTopia at [https://g-maps-clone.vercel.app/](https://g-maps-clone.vercel.app/).

## Contributing

Contributions are welcome! If you encounter any issues or have suggestions for improvement, please open an issue or submit a pull request.

1. Fork the repository.
2. Create a new branch.
3. Make your changes and commit them.
4. Push to the branch.
5. Submit a pull request.

## GitHub

[View Github](https://github.com/gateremark/g_maps_clone?ref=reactjsexample.com)