teleren/devto huggingface dataset:
Conceptualizing the two crystal ball problem
Tags: computerscience, algorithms
Published: 2024-01-16 05:09:11

# The problem

You have two identical crystal balls and you are to determine the most efficient way to figure out the lowest floor in a given building where the crystal balls will break when dropped.

# Setting up the problem

If all you had was one crystal ball, the only way to guarantee success in finding the answer would be with a linear search, or simply dropping the ball from each story, starting at the first, until you found the solution. Because we have 2 crystal balls though, we have more freedom to jump around. Suppose that the building in the problem has 120 floors. With a linear search, your worst case scenario would be 120 drops. If you moved in intervals of 2 floors though, your worst case scenario would be 61 steps. 60 steps forward, 1 step backward to see if the previous floor was the breaking point or if the floor at step 60 was the breaking point. If you moved in intervals of 3, your worst case scenario would be 42 steps. 40 steps forward, 1 step backward to the floor above the previous interval and 1 more step forward to complete scanning the entire interval.

To write this out mathematically, you could use use the following variables:

- n = total number of floors
- m = step interval

And the equation would look like this:

**n / m + (m - 1) = total number of steps in the worst case**

For the example using intervals of 3, the equation would be applied as:

120 / 3 + (3 - 1) => 40 + 2 => 42

So in order to figure out the optimal, or most efficient, interval size, we want to minimize the total number of drops and we can do this by finding the derivative of the function of n / m + (m - 1) which is the **square root of n**. Another way to find this solution without the use of calculus is to approximate m - 1 as m and set n / m = m. Solve for m, which is also the **square root of n**. 

# The solution

Given this minimization, the optimal way to find the lowest floor at which one of the crystal balls would break is by traversing the building in intervals of the square root of n.
Confessions of a black girl in tech...
Tags: womenintech, girlintech, womenwhocode, blackintech
Published: 2024-01-16 04:57:00

---
title: Confessions of a black girl in tech... 
published: true
description: 
tags: 
  - womenintech
  - girlintech
  - womenwhocode
  - blackintech
cover_image: https://i.ytimg.com/vi/1dIAboP3HhE/maxresdefault.jpg
canonical_url: "https://www.youtube.com/watch?v=1dIAboP3HhE"
---

[Watch full Video](https://www.youtube.com/watch?v=1dIAboP3HhE)
📱🎉 iPhone 15 Pro Max Giveaway 🎉📱
Published: 2024-01-16 04:52:37


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/26gsfgcnednuiqqzwzsz.jpg)
Hey [Your Community/Followers],
Exciting news! 🌟 We're thrilled to announce our i[Phone 15 Pro Max Giveaway](https://sites.google.com/view/mobilebazar021/home)! 📲🎁
To express our gratitude for your amazing support, we're giving you a chance to win the latest and greatest iPhone 15 Pro Max! 🚀✨
How to Enter:
🔄 Like this post.
📝 Comment below and tell us why you deserve to win the iPhone 15 Pro Max.
🤝 Tag 3 friends who would love to participate!
Bonus Entry:
🔁 Share this post on your story and tag us for an extra entry!
🏆 Giveaway Details:
📅 Giveaway ends on [10.02.2024].
🎊 Winner will be announced on [11.02.2024].
🌎 Open to [[Specify Eligibility](https://sites.google.com/view/mobilebazar021/home)].
Good luck to everyone! 🍀🤞 Let the iPhone 15 Pro Max hype begin! 🎊📱 #iPhone15ProMaxGiveaway #TechLove #GiveawayTime

[Win iPhone 15 pro max](https://sites.google.com/view/mobilebazar021/home)
7-Step Framework Infused with Pomodoro Magic to Eliminate Multitasking for Software Developers
Tags: programming, softwaredevelopment, productivity, beginners
Published: 2024-01-16 04:52:35

In the last post, we talked about how Mutitasking leads to unproductivity. [Read it here](https://dev.to/viissgg/the-multitasking-myth-how-multitasking-sabotages-your-development-projects-3-devastating-reasons-32gf)

## Here are 7 step-by-step frameworks using the Pomodoro technique.

### Step 1: Break Down the Project:
- Divide the overall project into smaller, manageable tasks.
- Clearly define objectives and deliverables for each task.

### Step 2: Prioritize and Schedule Tasks:
- Evaluate tasks based on importance, urgency, and complexity.
- Create a schedule that allocates focused time for each task.

### Step 3: Set Up Your Work Environment:
- Organize your workspace for optimal productivity.
- Remove distractions and notifications to create a focused work atmosphere.

### Step 4: Work on One Task at a Time:
- Focus on a single task for a 25-minute Pomodoro.
- Avoid switching between tasks or checking other unrelated matters.

### Step 5: Take a 5-Minute Break:
- After completing a Pomodoro, take a short 5-minute break.
- Use this time to relax, stretch, or do something unrelated to work.

### Step 6: Repeat Steps 4 and 5:
- Continue the cycle of 25 minutes of focused work followed by a 5-minute break.
- After completing four Pomodoros, take a longer 15-30 minute break.

### Step 7: Review Your Progress:
- Assess your achievements and progress periodically.
- Evaluate your performance and identify areas for improvement.

_Implementing these steps in conjunction with the Pomodoro Technique enhances productivity, ensuring a structured and efficient approach to work._

{% cta https://twitter.com/ViiSSGG/status/1747111766201397421 %} Read this essay on Twitter/X {% endcta %}

If you like this post, you will like my other post too. Read it on [Twitter/X](https://twitter.com/ViiSSGG)

<a href="https://www.freepik.com/free-ai-image/old-fashioned-alarm-clock-wakes-up-sleeping-sun-generative-ai_48634768.htm#fromView=search&term=pomodoro&track=ais_ai_generated&regularType=ai&page=1&position=9&uuid=4572b11e-d3aa-40a9-8d6e-2750bb81509a">Image By vecstock</a>
Docker Swarm
Tags: dockerfull, dockerswarm, swarm, ibbus
Published: 2024-01-16 04:23:34

**Docker Swarm** is a native clustering and orchestration solution for Docker. It allows you to create and manage a swarm of Docker nodes, turning them into a single, virtual Docker engine. This enables you to deploy and manage containerized applications at scale.

Here are some key concepts and features of Docker Swarm:

**Node**: A Docker node is an instance of the Docker engine participating in the swarm. Nodes can be physical machines or virtual machines.

**Manager Node**: In a Docker Swarm, there are one or more manager nodes that are responsible for managing the swarm and orchestrating the deployment of services. Manager nodes maintain the desired state of the swarm and respond to events.

**Worker Node**: Worker nodes are responsible for running the tasks that make up the services in the swarm. They receive instructions from manager nodes and execute the tasks.

**Service**: A service is the definition of the tasks to execute on the worker nodes. It includes information about which container image to use, how many replicas (instances) should be running, and various other settings.

**Task**: A task represents a running container on a worker node. The manager node schedules tasks based on the desired state defined in the service.

**Overlay Networking**: Docker Swarm uses overlay networking to facilitate communication between containers running on different nodes in the swarm. This enables multi-host networking for your services.

**Load Balancing**: Docker Swarm includes built-in load balancing for distributing incoming requests across the tasks in a service.
[20 Days of DynamoDB] Day 7 - DeleteItem API
Tags: serverless, dynamodb, database, cloud
Published: 2024-01-16 04:17:35

*Posted: 16/Jan/2024*

The DynamoDB `DeleteItem` API does what it says - delete an item. But it can also:

- Return the content of the old item (at no additional cost)
- Return the consumed Write Capacity Units (WCU)
- Return the item attributes for an operation that failed a condition check (again, no additional cost)
- Retrieve statistics about item collections, if any, that were affected during the operation

Here is an example:

```go
	resp, err := client.DeleteItem(context.Background(), &dynamodb.DeleteItemInput{
		TableName: aws.String(tableName),
		Key: map[string]types.AttributeValue{
			"email": &types.AttributeValueMemberS{Value: email},
		},
		
		ReturnValues:                        types.ReturnValueAllOld,
		ReturnConsumedCapacity:              types.ReturnConsumedCapacityTotal,
		ReturnValuesOnConditionCheckFailure: types.ReturnValuesOnConditionCheckFailureAllOld,
		ReturnItemCollectionMetrics:         types.ReturnItemCollectionMetricsSize,
	})
```

Recommended reading - [DeleteItem API doc](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/dynamodb#Client.DeleteItem)
Desain web jadi lebih mudah, visbug
Tags: productivity, frontend, design, tooling
Published: 2024-01-16 03:30:02

pernah ngalamain sudah desian web tapi dapat masukan dari pak bos. "coba tulisannya di buat bold", "coba warnanya di ganti", "coba geser ke kanan sedikit". itu mudah bagi UI Desainer. namum kalau sudah di eksekusi oleh frontend namun masih aja dapat revisi akan ribet banget harus buka coding.

**visbug** jadi penolong ni bagi frontend developer untuk layani permintaan pak bos. bisa coba coba langsung di [web](https://visbug.web.app/) visbug.

beberapa fitur yang bisa di pakai pada visbug:

- dari ganti warna background

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/0udta5nzn5akk2vja776.png)

- hapus element

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/eqvlhw40qepdvp8fu6ky.png)

- ubah urutan

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/0aipjl541l54iicnlqzy.png)

dan masih banyak fitur lainnya yang bisa dicoba langsung di halaman [web](https://visbug.web.app/) visbug.

yuk langsung cobain fitur extesin browser [visbug](https://chromewebstore.google.com/detail/visbug/cdockenadnadldjbbgcallicgledbeoc?pli=1)
Ngegame sambil belajar coding, bisaaa dong!!!
Tags: learning, beginners, codenewbie, chatgpt
Published: 2024-01-16 02:57:50

Cobain ni beberapa website yang bisa digunakan untuk belajar coding sambil ngegame.

1. [codewars](https://www.codewars.com/)
2. [flukeout](https://flukeout.github.io/)
3. [screeps](https://screeps.com/)
4. [codecombat](https://codecombat.com/)
5. [checkio](https://checkio.org/)
6. [mystery.knightlab](https://mystery.knightlab.com/)

# 1. Codewars
Bahasa pemrograman yang bisa dilih bisa berbagai macam. bagi pemula bisa pilih javasript

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/npgf9fksvo3rhiuguphj.png)

setelah melengkapi pengaturan awal. kalian akan melihat tampilan dashboard, di sini kalian akan di suguhkan informasi mengenai saran tantangan (Suggested Challenge) dan group (Allies)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/kio7k2al5axxly5d5eib.png)

Kalian bisa memilih bahasa pemrograman yang mau di pakai dan tipe tantangan.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/huii9enhvutx0y68jukt.png)

Mari kita coba untuk memulai perjalanan ini. pilih Fundamental pada dropdown, tekan tombol 'TRAIN'

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/j2aee2tjaxulsl72agsn.png)

Tampilan yang di sajikan mirip dengan [hacker rank](https://www.hackerrank.com/). terdapat instruksi untuk menyelesaikan tantangan (warna merah) dan code editor untuk menuliskan code (warna hijau).

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/a20hoc3ex2eh8t0jrcb6.png)

Bagaimana mencari solusi nya. mari menggunakan tools AI chat GPT. tantangannya di sini adalah memasukkan perintah yang sesuai dengan hasil yang kita inginkan. pada tantangan kita di suruh untuk menggabungkan array menjadi string (kata). kemungkinan kata yang disajikan terdapat spasi sebelum dan sesudah seperti " aku". sebelum kata aku ada spasi. maka pada perintah chat gpt kita bisa memasukkan perintah "js array to string with trim" kita akan mendapatkan solusi

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8gp85w6bwafra8pgytmz.png)

selanjutnya kita implementasikan dan tekan tombol test untuk melihat apakah kode yang kita tulis sudah lolos test. jika sudah lolos test, tekan tombol ATTEMP dan tombol SUBMIT sesudahnya.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dt1uzub7oeony6vh6jyh.png)

asik nih rank kita sudah bertambah. bisa dilihat pada pada halaman profil. 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/fq2zeu2pv2zbpolf7s0n.png)

lanjutkan perjalanan kalian sampai ke rank yang tinggi. 

see uu !!!
Svelte에서 input type이 date 일 때, 월/일에 0으로 시작하는 날짜를 넣으면 기존 입력 사라지는 문제
Tags: svelte
Published: 2024-01-16 02:27:27

```js
<script>
  let date1 = "2024-01-01";
  let date2 = "2024-01-02";
</script>

<p>date1: <input type="date" bind:value={date1} max="9999-12-31" /></p>
<p>date2: <input type="date" value={date2} max="9999-12-31" /></p>
```

이렇게 만들면 `bind:value`가 걸린 필드에 `2023.01.01` 을 입력하려할 때 `월/일` 에 0을 입력하면 기존에 입력된 내용이 사라진다. 
github에 물어봐도, 이미 2022년에 누가 고쳐달라고 올린 이슈가 있던데 아직도 안 고쳐진걸로 봐선 시간이 걸릴 것 같아서 컴포넌트로 만들었다. 

```js
<script>
  import { createEventDispatcher } from "svelte";
	
  export let value;
  export let type = "date";
  export let max = "9999-12-31";
  export { _class as class };
  let _class = "";

  let downedKey;

  const handleKeyDown = (event) => {
    downedKey = event.key;
    dispatch("keydown", event);
  };

  const handleChanged = (event) => {
    const newValue = event.target.value;
    if (downedKey === "Backspace" || downedKey === "Delete" || newValue) {
      value = newValue;
      dispatch("change", event);
    }
  };
</script>

<input
  {type}
  {value}
  {max}
  on:keydown={handleKeyDown}
  on:change={handleChanged}
  class=" {_class}"
/>
```

이렇게 하면 백스페이스나 삭제버튼을 눌러서 지운게 아니면 데이터가 날아가지 않게 된다. 

테스트는 여기서 해볼 수 있다. 

https://svelte.dev/repl/301e4f0596534cfe90b5f72eb22d09ae?version=4.2.8
Best Spa in Boca Raton
Published: 2024-01-16 01:52:07

Skin Apeel is the top rated day spa in Boca Raton, also voted one of The Best Spas in South Florida, with Services Like facials, massages, & more! Just click **[Best Spa in Boca Raton](https://skinapeel.com/treatments/spa-packages/)** for more info.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/wvkrci2r7izypoqs67al.png)
LIVCK: Free, Self-Hosted Infrastructure Monitoring
Tags: selfhosted, statuspage
Published: 2024-01-16 01:14:21

Hello Community,

Today, I'm excited to introduce you to LIVCK, a powerful tool ushering in a new era for developers and IT professionals. LIVCK is a self-hosted software solution for monitoring the availability of your infrastructure, and the best part? It's free!

## What is LIVCK?

LIVCK offers various types of monitoring to ensure your infrastructure always operates smoothly. The key monitoring types include:

- **TCP Check**: Monitors TCP services at specific IP addresses and ports.
- **HTTP Check**: Enables the monitoring of web servers and websites, including checking response status codes.
- **Manual Check**: For activities that require manual monitoring.
- **Healthcheck**: For monitoring internal services or cron jobs.
- **SSL-Certificates**: Stay informed about the status of your certificates.

Each of these monitoring types is customizable to meet specific monitoring needs.

## Free, But Requires a License

Although LIVCK is free, you need a valid license key to use it. The process is straightforward. Visit the LIVCK website, register, choose a plan (free plan available), and obtain your license key.

## Localization Features

LIVCK is not only powerful but also user-friendly. Supporting German and English, with automatic language detection, it offers a seamless and personalized user experience. Team members can select their preferred language in their profile settings, facilitating work in multicultural teams.

## Conclusion

LIVCK is an ideal solution for developers and IT professionals looking for an efficient, customizable, and cost-effective way to monitor their infrastructure. With its user-friendly interface and extensive configuration options, LIVCK is a vital tool for ensuring infrastructure performance.

For more information and detailed instructions, visit the [official LIVCK Page](http://livck.com/r/devto).

I hope you found this insight into LIVCK helpful. Share your experiences with LIVCK in the comments below!
Decision #2: FISK (Firebase + Svelte Kit) Stack
Tags: webdev, development, svelte, firebase
Published: 2024-01-16 01:00:15

Firebase provides many services (hosting, database, authentication, serverless functions, analytics, file storage, feature flags, and more) in a "pay-for-what-you-use" format with free allocations during development while Svelte Kit provides a good deal of functionality for the front-end.
___

## Motivation
After a few years of working on projects, there is an overhead that comes with using many services. After considering AWS, Google Cloud, and Azure, Firebase (mostly supported by Google Cloud now) covers most services needed to launch an app with minimal upfront cost. 

Having used NextJS and React for a few years I kept running into "friction". After trying Svelte [Kit] for a few weeks I've decided to give it a go as some of the things seem to run simpler. 

## Concerns/Trade-offs
In the long term, the cost of scaling Firebase may increase significantly. Some of those costs may be designed away or there may be an eventual need to move to a different system. For now, the simplicity of use and lower startup cost seem to warrant that trade-off vs setting up more complex systems.

As for Svelte Kit I have significantly less experience than with NextJS+React which means that I am more likely to run into problems that I have not had to solve before. The framework is still evolving and by deciding to use their latest (unreleased as of this writing) version 5 there is less information available when it comes to troubleshooting issues.
The cost of types
Tags: types, programming, theory
Published: 2024-01-16 00:52:51

As much as I like types (see previous posts), here is the cost of the safety.

This whole PR is to support generic types correctly:
https://github.com/dchaley/deepcell-imaging/pull/117

TIL, when using fused types in cython, it doesn't generate all possible fuse combinations: it assumes they match across parameters. So I had to create a new, identical fused type.

This is going into scikit, aka hundreds, thousands, or more developers. Since the benefit "multiplies" across those folks I still believe the cost of type shenanigans is worth it 😎 But, it is certainly a cost and types can feel slow or clunky when starting a project.
Decision #1: PWA only
Tags: webdev, discuss, frontend, mobile
Published: 2024-01-16 00:40:51

PWAs provide the needed functionality for many types of apps while significantly reducing the development cost vs. building native apps. Discoverability is sacrificed, but I expect that to be a worthy trade-off for the first version of the app.

___

## Progressive Web Apps Support and Functionality
> A progressive web app (PWA) is an app that's built using web platform technologies, but that provides a user experience like that of a platform-specific app. ~[Mozilla Dev Docs](https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps)

## Motivations
- Reduce development costs and time to launch by developing a single app (web) rather than three (web, iOS, Android).
- Reduce release cycle time by avoiding the delays and slowdowns introduced by app store processes and the occasional lack of actionable feedback provided during submission failures.

## Concerns/Trade-offs
- The reality is that when people hear of an app they expect, for the most part, to be able to find it in the app store. Adding hints to the web app may help make the install experience more accessible.
- In the long term it may be important to launch native apps to capture the audience that goes there first.
How to host websites for free?
Tags: question
Published: 2024-01-16 00:40:23

Hi,

I started learning web development 3 months ago and I created a couple of applications.

I want to host my websites online, but there are so many services that I don’t know where to start.

What I’m looking for is a service that offers a free plan where I can host my front-end and full-stack projects.

I’ve heard that you can host front-end websites on GitHub pages. I wasn’t sure if this is the recommended way to host websites, or if there’s a better free service.

For full-stack applications, I tried using Render’s free plan. However, my website spins down after 15 minutes of inactivity and it takes a couple of minutes to spin back up when it receives a request.

I want to show my applications to employers without having to take minutes to load the webpage. Is there another free alternative to host a full-stack application that offers a faster load time?
Exception Handling in Python
Tags: python, beginners, programming, tutorial
Published: 2024-01-16 00:31:14

## Introduction

Exception handling is a crucial aspect of programming and plays a significant role in managing errors and unexpected situations in a program's execution. In Python, exception handling is a powerful tool that allows developers to handle potential errors and exceptions gracefully. This technique helps in making the code more robust and stable, resulting in a better user experience. In this article, we will discuss the advantages, disadvantages, and notable features of exception handling in Python.

## Advantages

1. **Error Management**: Exception handling helps in catching and handling errors in a program's execution, preventing it from crashing abruptly.

2. **Debugging**: When an exception is raised, the execution is halted, and the program prints a traceback, providing valuable information such as the line number and file name, aiding in debugging.

3. **User-Friendly**: With exception handling, developers can provide custom error messages, making it easier for users to understand and handle errors.

## Disadvantages

1. **Performance Overhead**: Exception handling can incur a slight performance overhead due to the additional steps involved in handling an exception.

2. **Complexity**: With multiple nested try-except blocks, the code can become complex and difficult to read, requiring effective planning and implementation.

## Features

1. **Custom Exceptions**: Python allows developers to create custom exception classes, making it easier to handle specific types of errors.

2. **Finally Block**: The finally block is executed regardless of an exception being caught, which can be useful for releasing resources or cleaning up operations.

3. **Exception Chaining**: Python also has the feature of exception chaining, where one exception can be raised while handling another exception, providing a more comprehensive view of the error.

### Example: Basic Exception Handling

```python
try:
    # Attempt to execute this block of code
    result = 10 / 0
except ZeroDivisionError:
    # Handle the exception
    print("You can't divide by zero!")
finally:
    # This block is executed no matter what
    print("Execution completed.")
```

This example demonstrates the basic structure of exception handling in Python, including the use of **try**, **except**, and **finally** blocks.

## Conclusion

In conclusion, exception handling in Python is a powerful tool that helps in managing errors and making code more robust. Although there are some minor disadvantages, the advantages and notable features outweigh them, making it a valuable technique for developers. By implementing proper exception handling, programmers can ensure a smoother and more efficient execution of their programs.