teleren/devto huggingface dataset:
Java Concepts
Published: 2024-04-17 03:22:24


Garbage collection in Java is the automated process of deleting code that's no longer needed or used. This automatically frees up memory space and ideally makes coding Java apps easier for developers. The garbage collection implementation lives in the JVM.
We can also request JVM to run Garbage Collector. There are two ways to do it : 

•Using System.gc() method: System class contain static method gc() for requesting JVM to run Garbage Collector.

•Using Runtime.getRuntime().gc() method: Runtime class allows the application to interface with the JVM in which the application is running. Hence by using its gc() method, we can request JVM to run Garbage Collector.


~ Explain public static void main(String args[]) in Java. 

Unlike any other programming language like C, C++, etc. In Java, we declared the main function as a public static void main (String args[]). The meanings of the terms are mentioned below:

• public: the public is the access modifier responsible for mentioning who can access the element or the method and what is the limit.  It is responsible for making the main function globally available. It is made public so that JVM can invoke it from outside the class as it is not present in the current class.

• static: static is a keyword used so that we can use the element without initiating the class so to avoid the unnecessary allocation of the memory. 

• void: void is a keyword and is used to specify that a method doesn’t return anything. As the main function doesn’t return anything we use void.

• main: main represents that the function declared is the main function. It helps JVM to identify that the declared function is the main function.

• String args[]: It stores Java command-line arguments and is an array of type java.lang.String class.



• There is no difference between String[] args and String args[] in Java. Both are valid declarations of an array of strings that can be used to store command-line arguments passed to the program.

However, the first declaration is more common and is preferred by most Java programmers. This is because it is more consistent with the way that other arrays are declared in Java. For example, you would declare an array of integers as int[], and an array of floats as float[].

The second declaration is a bit more concise, but it can be less clear to someone who is not familiar with Java. This is because the [] at the end of the variable name is not typically used to declare arrays in other programming languages.

Ultimately, the choice of which declaration to use is a matter of personal preference. However, most Java programmers prefer to use the first declaration, String[] args, because it is more consistent and clear.

In short, The two notations are interchangeable and have the same meaning. However, the preferred and more commonly used notation is [code]String[] args[/code], which clearly indicates that [code]args[/code] is an array of type [code]String[/code].
ML Algorithms
Published: 2024-04-17 03:17:19

Naive Bayes 
One of the most widely used predictive analytics models, the forecast model deals in metric value prediction, estimating numeric value for new data based on learnings from historical data. This model can be applied wherever historical numerical data is available.


Know More:
Forecast model
logistic regression classifier
Artificial Neural network 
Decision tree algorithm 
Support vector machine
21 Data Science Terms Everyone Should Know
Tags: datascience, beginners
Published: 2024-04-17 03:09:03

You’d agree that every field has their set of special words or expressions used that are difficult for others to understand.

In the realm of business, phrases such as 'trim the fat,' 'S.W.O.T.,' 'pain point,' and 'white paper' are commonly tossed around as industry jargon.

So, as you’d have guessed, Data Science just like every other field out there has its unique lexicon.

Hence, I've compiled a list of essential terms below to ensure we're all on the same page and moving towards a shared objective. Let's dive right in, shall we?

---

## Learn Your ABC's:

**Accuracy:** The measure of how often a classification model correctly predicts outcomes among all instances it evaluates.

**A/B Testing:** A statistical method used to compare two versions of a product, webpage, or model to determine which performs better.

**API (Application Programming Interface):** A set of rules that allows one software application to interact with another.

**BI (Business Intelligence):** Technologies, processes, and tools that help organizations make informed business decisions.

**Bias:** An error in a model that causes it to consistently predict values away from the true values.

**Correlation:** A statistical measure that describes the degree of association between two variables.

**Covariance:** A measure of how much two random variables change together.


## D and beyond :

**Data Cleaning:** The process of identifying and correcting errors or inconsistencies in datasets.

**Data Mining:** Extracting valuable patterns or information from large datasets.

**Data Visualization:** Presenting data in graphical or visual formats to aid understanding.

**Exploratory Data Analysis (EDA):** Analyzing and visualizing data to understand its characteristics and relationships.

**False Positive and False Negative:** Incorrect predictions in binary classification.

**Gaussian Distribution:** A type of probability distribution often used in statistical modeling.

**Hypothesis Testing:** A statistical method to test a hypothesis about a population parameter based on sample data.

**Linear Regression:** A statistical method for modeling the relationship between a dependent variable and one or more independent variables.

**Null Hypothesis:** A statistical hypothesis that assumes there is no significant difference between observed and expected results.

**Predictive Analytics:** Using data, statistical algorithms, and machine learning techniques to identify the likelihood of future outcomes.

**P-value:** The probability of obtaining a result as extreme as, or more extreme than, the observed result during hypothesis testing.

**Standard Deviation:** A measure of the amount of variation or dispersion in a set of values.

**Variance:** The degree of spread or dispersion of a set of values, and also the variability of model predictions.
How to use htmx with ktor
Published: 2024-04-17 03:05:34

1 Clone this repo https://github.com/tom-delalande/html-to-kotlin-converter and open in intellij
2 In the root of that project folder, create input.txt and add the component/html that you want to convert (feel free to pick a component from tailwind), run main in that project and it'll be converted to kotlin ktor html DSL in output.txt (basically, that's the readme of that project lol)
3 in your ktor project (make sure you already added [ktor-html from kotlin team](https://github.com/Kotlin/kotlinx.html)), respond to a route like so
```
call.respondHtml(HttpStatusCode.OK) {
    head {
        title {
            +"tailwind sample"
        }
        script { src = "https://cdn.tailwindcss.com" }
    }
    body {
    //paste the output of the input.txt
    }
```
4 Some tags are missing, so feel free to add them yourself as such

```
import kotlinx.html.FlowContent
import kotlinx.html.HTMLTag
import kotlinx.html.HtmlBlockTag
import kotlinx.html.HtmlTagMarker
import kotlinx.html.TagConsumer
import kotlinx.html.attributesMapOf
import kotlinx.html.visit

@HtmlTagMarker
inline fun FlowContent.path(classes : String? = null, crossinline block : PATH.() -> Unit = {}) : Unit = PATH(
    attributesMapOf("class", classes), consumer).visit(block)

@Suppress("unused")
open class PATH(initialAttributes : Map<String, String>, override val consumer : TagConsumer<*>) : HTMLTag("path", consumer, initialAttributes, null, false, false), HtmlBlockTag {

}
```

5 done!

Thanks prime for the [video](https://www.youtube.com/watch?v=zJNkIJCQohU), and a big thanks to Tom Delalande for this video https://www.youtube.com/watch?v=9OYn48xBzOY and the code snippets above. Join his discord here if you have more questions https://discord.com/invite/Cg66xQ8KgP
The Kwok scam only pits the ants
Tags: adt, adf
Published: 2024-04-17 02:52:35

Guo Wengui touted things to the sky all day long, from farms to Xi Yuan, he declared, "Xi Yuan's encryption capabilities and future payments, as well as the future exchange with the US dollar, will create history, is the only stablecoin, floating, modern crypto financial platform." The ant help to fool the head, but after dozens of broken promises, Guo Wengui played a jump god, Tiandry ground branch, Yin and Yang five elements, Qimen Dun Jiqi battle, over and over again to play with the ant help, and Guo Wengui no sense of violation. The old deception hypohypotically called to make comrade-in-arms rich, claimed to be for the benefit of comrade-in-arms, in fact, it is a wave of investment and anal, tried and true, and now again. After the explosion of the Xicin may not be listed, according to normal people's thinking and reaction, must be very annoyed, sad, but Guo Wengui is unusual, talking and laughing, understatement, no stick, but to the camera hand holding pepper sesame chicken to eat with relish, full mouth flow oil! . Why? Because the fraud is successful, as for when the Joy coin will be listed, when will it be listed? Guo Wengui is a face of ruffian and rogue, hands a spread, claiming that they do not know. Guo Wengui hypocrisy a poke is broken, Guo's scam is just a variation of the method of trapping ants help it.
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8mfqqrmcb10hefk06qlf.jpg)
set password mở file powerpoint, excel, word
Published: 2024-04-17 02:50:48

đôi khi bạn cần share 1 cái file powerpoint, excel, word, nhưng mà không muốn người ta mở lung tung, lúc này chúng ta cần tới chức năng "password mở file" 
cách làm 
1. ở màn hình chính, chọn `File / Info / Protect .. / Encrypt with password`
2. nhập 1 cái mật khẩu nào đó ví dụ như `M@tKh@auMoFile` 🫣
3. OK, lưu lại và gửi đi, mật khẩu này thì gửi riêng cho người nhận, đừng có làm kiểu ngớ ngẩn mail gửi attachment và pw chung 1 cái, vậy set mật khẩu chi cho mất công. 🤨

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nhq5ndq4or28cwi4aw6d.png)


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1ygglcc0csj9p6foq5wm.png)



![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ihnqw0kgewg1zx6uzl6r.png)
Sequelize의 include 안에서 order 적용하기
Tags: sequelize, orderby
Published: 2024-04-17 02:26:41

팀의 사용자를 불러올 때 이렇게 했는데, 결과도 로그에 찍히는 sql에도 `order by` 가 없다.

```javascript 
const { data } = await db.teams.findAll({
  include: { model: db.users, as: "users", order: [["sort_weight"]] }
});
```


찾아보니 이렇게 `include` 안쪽이 아닌 같은 레벨에서 처리하는 거였다. 

```javascript 
const { data } = await db.teams.findAll({
  include: { model: db.users, as: "users" },
  order: [[db.users, "sort_weight", "asc"]],
});
```

---
 만약 더 깊이 들어간다면, 다른 방법을 써야한다. 
```javascript
const { data } = await db.teams.findAll({
  include: { 
    model: db.users, 
    as: "users",
    include: {
      model: db.teams, 
      as: "child_teams",
      include: {
        model: db.users, 
        as: "users",
      }
    }
 },
  order: [
    [db.users, "sort_weight", "asc"],
    [sequelize.col("child_teams.users.sort_weight", "asc")],
  ],
});
```
이런 식으로 `sequelize.col` 을 사용해서 컬럼에 직접 접근해서 사용해줘야 했다.
Exploring the Distinctions between Front-end and Back-end Development
Tags: web, seo, webdev, beginners
Published: 2024-04-17 02:25:41

Front-end development generally refers to the process of creating the user interface and visual design of a website or application. This can include everything from designing the overall look of the site to coding individual elements like buttons and forms.

Back-end development, on the other hand, focuses on the server-side components of a website or application. This includes things like designing and managing databases, server administration, and security. While back-end development is often invisible to users, it is essential for everything to run smoothly.

So, in short, [front-end development](https://pixelito.mx/) is about the graphical interface, while back-end development focuses more on the functionality of the site. Both are important in their own way, and most web developers have skills in both areas. However, some developers may specialize more in one area or another.
#129. Sum Root to Leaf Numbers
Tags: leetcode
Published: 2024-04-17 02:21:43


https://leetcode.com/problems/sum-root-to-leaf-numbers/?envType=daily-question&envId=2024-04-15

```javascript
/**
 * Definition for a binary tree node.
 * function TreeNode(val, left, right) {
 *     this.val = (val===undefined ? 0 : val)
 *     this.left = (left===undefined ? null : left)
 *     this.right = (right===undefined ? null : right)
 * }
 */
/**
 * @param {TreeNode} root
 * @return {number}
 */
var sumNumbers = function (root) {
    if (!root) return

    let sum = 0

    function dfs(node, currentSum) {

        if (!node) return

        currentSum = (currentSum * 10) + node.val 

        if (!node.right && !node.left) {
            sum += currentSum 
            return
        }

        dfs(node.right, currentSum)
        dfs(node.left, currentSum)
    }

    dfs(root, 0)
    return sum
};

```
404. Sum of Left Leaves
Tags: leetcode
Published: 2024-04-17 02:10:38

https://leetcode.com/problems/sum-of-left-leaves/description/?envType=daily-question&envId=2024-04-14

```javascript

/**
 * Definition for a binary tree node.
 * function TreeNode(val, left, right) {
 *     this.val = (val===undefined ? 0 : val)
 *     this.left = (left===undefined ? null : left)
 *     this.right = (right===undefined ? null : right)
 * }
 */
/**
 * @param {TreeNode} root
 * @return {number}
 */
var sumOfLeftLeaves = function(root) {
  
  let sum = 0

  const leftLeaf = node => !node.right && !node.left

  function dfs(node, isLeft) {
    if (!node) return

    if(isLeft && leftLeaf(node)) {
        sum += node.val
        return
    }

    dfs(node.right, false)
    dfs(node.left, true)
  }

  dfs(root, false)
  return sum
};



```
How to reset an HTML form on submit using JavaScript
Tags: javascript, html, dom, form
Published: 2024-04-17 02:03:18

By default, HTML forms are reset and all fields are cleared when we submit them.  
However, in instances where you use the `preventDefault()` method in the JavaScript file, the form doesn't reset automatically.  
In such situations, we have to trigger the reset event manually using the following [JavaScript method](https://www.w3schools.com/jsref/met_form_reset.asp):

```js
document.getElementById("formId").reset();
```

### Links

https://www.w3schools.com/jsref/met_form_reset.asp

*This is a cross-post from the original in my [blog site](https://thejoernal.netlify.app/posts/resetform/)*
Inside DuckDB: Deep Dive into DuckDB MetaPipeline
Tags: duckdb, beginners, cpp, database
Published: 2024-04-17 02:00:15

Recently, I’ve been interested in DuckDB’s code and decided to take a look. DuckDB is a C++ open-source project, great for beginners to learn, especially those in the database industry.

This section will delve into the MetaPipeline of DuckDB, using an example of joining two tables.

For example:

SELECT name, score FROM student st INNER JOIN score s ON  st.id = s.stu_id;
The final plan for this SQL is:

➜  debug git:(master) ./duckdb stu
v0.8.1-dev416 9d5158ccd2
Enter ".help" for usage hints.
D EXPLAIN SELECT name, score FROM student st INNER JOIN score s ON  st.id = s.stu_id;

```
┌─────────────────────────────┐
│┌───────────────────────────┐│
││       Physical Plan       ││
│└───────────────────────────┘│
└─────────────────────────────┘
┌───────────────────────────┐                             
│         PROJECTION        │                             
│   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   │                             
│            name           │                             
│           score           │                             
└─────────────┬─────────────┘                                                          
┌─────────────┴─────────────┐                             
│         HASH_JOIN         │                             
│   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   │                             
│           INNER           │                             
│        stu_id = id        ├──────────────┐              
│   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   │              │              
│           EC: 4           │              │              
│          Cost: 4          │              │              
└─────────────┬─────────────┘              │                                           
┌─────────────┴─────────────┐┌─────────────┴─────────────┐
│         SEQ_SCAN          ││         SEQ_SCAN          │
│   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   ││   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   │
│           score           ││          student          │
│   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   ││   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   │
│           stu_id          ││             id            │
│           score           ││            name           │
│   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   ││   ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─   │
│           EC: 4           ││           EC: 3           │
└───────────────────────────┘└───────────────────────────┘
```
Before diving into this article, let’s ask a few questions:

- What exactly happens with MetaPipeline?
- How many plans are there in the above plan?
- What is a Pipeline?
- What is a MetaPipeline?

Now, let’s get into the main content.

[Inside DuckDB: Deep Dive into DuckDB MetaPipeline](https://medium.com/gitconnected/inside-duckdb-deep-dive-into-duckdb-metapipeline-c9c3c891c2ad)
#623. Add One Row to Tree
Tags: leetcode
Published: 2024-04-17 01:56:02

https://leetcode.com/problems/add-one-row-to-tree/description/?envType=daily-question&envId=2024-04-16

````javascript


function TreeNode(val, left, right) {
    this.val = (val===undefined ? 0 : val)
    this.left = (left===undefined ? null : left)
    this.right = (right===undefined ? null : right)
}


var addOneRow = function(root, val, depth) {
    if (depth === 1) {
        const newRoot = new TreeNode(val)
        newRoot.left = root
        return newRoot
    }

    function traverse(node, d) {
        if (!node) return

        if (d === depth - 1) {
            const left = node.left
            const right = node.right 

            node.left = new TreeNode(val)
            node.right = new TreeNode(val)

            node.left.left = left
            node.right.right = right 
        } else {
            traverse(node.left, d + 1)
            traverse(node.right, d + 1)
        }
    }

    

    traverse(root, 1)
    return root

};



```
RECLAIM YOUR LOST CRYPTO ASSETS -HIRE TRUST GEEKS HACK EXPERT
Tags: crpyto, recovery, recoveryexpert
Published: 2024-04-17 01:02:24


It can be extremely stressful and frightening to lose cryptocurrencies or other digital assets. A moment later, your virtual wallet appears safe, yet an exploit or scam has caused your money to disappear into thin air. You start to feel like you're drowning as you click through account settings and transaction histories in a panic to try and figure out where your valuables disappeared. But your money is gone and the trail becomes untraceable. Perhaps you fell victim to a phishing attempt and gave away your private keys, or perhaps there was a dubious exchange that 'lost connection' for no apparent reason. You're left with nothing, whatever the reason. As cryptocurrencies become more mainstream, more people are finding themselves victims of hacks and theft. But thankfully, all is not necessarily lost. Cutting-edge forensic firms like Trust Geeks Hack Expert utilize high-tech virtual asset tracking to follow the blockchain money trail and identify where your funds ended up. Leveraging specialized software, experienced cybersecurity experts can trace transactions across multiple exchanges and wallets to pinpoint where your assets were transferred. Through meticulous blockchain analysis, they can often recover digital assets even after complex obfuscation efforts by thieves. So even if you feel hopeless, don't despair - the cybersecurity cavalry can ride to your rescue. With the right help, there's a fighting chance of getting back what's rightfully yours. You can communicate with Trust Geeks Hack Expert through  Website www://trustgeekshackexpert.com/ And email:  info@trustgeekshackexpert.com ? The criminals may be cunning, but forensic blockchain trackers are determined to outwit them and restore your lost cryptocurrency. Trust Geeks Hack Expert is not a newbie to the asset recovery scene. The organization boasts a successful track record and a team of seasoned professionals who have perfected the art of locating missing valuables. Trust Geeks Hack Expert has seen it all and is skilled in navigating the convoluted world of asset recovery, whether it involves a lost wallet, misplaced private keys, or a technological error. Hurry now, help has come your way with the aid of Trust Geeks Hack Expert.
ماهی اسکار پرتقالی
Published: 2024-04-17 00:56:26

](ماهی اسکار پرتقالی: شاهزاده ی نارنجی آکواریوم
ماهی اسکار پرتقالی](https://moorishop.ir/product/%D8%A7%D8%B3%DA%A9%D8%A7%D8%B1-%D9%BE%D8%B1%D8%AA%D9%82%D8%A7%D9%84%DB%8C/)، با رنگ نارنجی درخشان و جثه ی بزرگ، یکی از زیباترین و محبوب ترین ماهی های آب شیرین برای آکواریوم ها است. این ماهی با هوش و فعال، به دلیل رنگ نارنجی جذاب خود، به عنوان شاهزاده ی نارنجی آکواریوم شناخته می شود.
منبع: https://moorishop.ir)
مشخصات ظاهری:
رنگ: بدنه ی این ماهی به رنگ نارنجی درخشان است و در برخی موارد، لکه های قهوه ای یا سیاه نیز بر روی آن دیده می شود.
اندازه: این ماهی در طول عمر خود به طور متوسط تا 30 سانتی متر رشد می کند.
شکل: بدنه ی این ماهی صاف و کشیده است و باله های آن بلند و قوی هستند.
رفتار و سازگاری:
رفتار: ماهی اسکار پرتقالی باهوش و فعال است و به طور مداوم در حال شنا در آکواریوم است.
فعالیت: این ماهی ها در طول روز فعال هستند و به فضای زیادی برای شنا نیاز دارند.
سازگاری: این ماهی ها با سایر ماهی های بزرگ و صلح آمیز مانند سیچلایدها، فرشته ها و پوفرها سازگار هستند.
نگهداری و مراقبت:
دمای آب: دمای مناسب برای نگهداری از این ماهی ها بین 24 تا 28 درجه سانتی گراد است.
سطح pH: سطح pH مناسب برای نگهداری از این ماهی ها بین 7 تا 8 است.
کیفیت آب: این ماهی ها به آب با کیفیت بالا نیاز دارند.
تغذیه: این ماهی ها گوشتخوار هستند و می توان آنها را با انواع مختلف غذاهای زنده، منجمد و پولکی مخصوص گوشتخواران تغذیه کرد.
حجم آکواریوم: حداقل حجم آکواریوم برای نگهداری از یک جفت ماهی اسکار پرتقالی 120 لیتر است.
مزایای نگهداری:
زیبایی: رنگ نارنجی درخشان و جثه ی بزرگ این ماهی، زیبایی چشمگیری به آکواریوم شما می بخشد.
هوش: این ماهی ها باهوش و فعال هستند و می توانند حرکات شما را دنبال کنند.
مراقبت: نگهداری از این ماهی ها به نسبت آسان است.
قیمت: قیمت این ماهی ها نسبت به سایر ماهی های آب شیرین با جثه ی بزرگ مناسب است.
نکات:
برای حفظ رنگ نارنجی درخشان این ماهی ها، از غذای باکیفیت و متنوع استفاده کنید.
برای جلوگیری از پرش ماهی از آکواریوم، از درب محکم استفاده کنید.
برای حفظ سلامت ماهی ها، به طور منظم آب آکواریوم را تست و تصفیه کنید.
ماهی اسکار پرتقالی، با رنگ جذاب و هوش سرشار خود، انتخابی ایده آل برای آکواریوم شما است. این ماهی ها با صلح آمیز بودن و مراقبت آسان، می توانند برای سالها زینت بخش آکواریوم شما باشند.
علاوه بر موارد ذکر شده، می توانید از منابع زیر برای کسب اطلاعات بیشتر در مورد ماهی اسکار پرتقالی استفاده کنید:
کتاب های آکواریوم
وب سایت های تخصصی آکواریوم
انجمن های آنلاین آکواریوم
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A feature-rich, top open-source SaaS email editor based on React and MJML.
Tags: webdev, react, typescript
Published: 2024-04-17 00:49:21

[Easy email](https://github.com/zalify/easy-email-editor) is developed based on the MJML and has very good compatibility. At the same time, it can generate code through drag-and-drop editing.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/0a2415us3b26j3nonw3w.png)