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graylog:
    image: graylog/graylog:5.1
    container_name: graylog
    environment:
      # Password: admin
      GRAYLOG_ROOT_PASSWORD_SHA2: "8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918"

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version: '3'

networks:
  graynet:
    driver: bridge

# This is how you persist data between container restarts
volumes:
  mongo_data:
    driver: local

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my-app
├── Dockerfile
├── docker-compose.yml
├── node_modules/
├── package.json
├── spec
├── src
├── yarn.lock

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const validateCreditCardNumber = require('./luhn-algorithm');

// Bu tool ile Credit Card Numarası Üretip Fonksiyonu Test Edebiliriz
// https://www.creditcardvalidator.org/generator

console.log(validateCreditCardNumber("4532201414641731")); // Visa = true
console.log(validateCreditCardNumber("5316400776001851")); // MasterCard = true
console.log(validateCreditCardNumber("379727417901957")); // Amex = true
console.log(validateCreditCardNumber("6222021199044319")); // UnionPay = true
console.log(validateCreditCardNumber("3016364233432398")); // Diners = true

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// Validation For Credit Card Numbers Using Luhn Algorithm

const validateCreditCardNumber = (input) => {
  // Kredi kartı numarasını sayısal bir diziye dönüştürme
  let creditCardInt = input.split("").map(Number);

  // Luhn Algoritması gereği her ikinci basamağı sondan başlayarak ikiyle çarparız
  for (let i = creditCardInt.length - 2; i >= 0; i = i - 2) {
    // Seçilen her ikinci basamağı geçici bir değişkende saklarız
    let tempValue = creditCardInt[i];

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dev
├── build
│   └── logs
│   │   └── debug_a.log
│   │   └── debug_b.log
│   │   └── debug_c.log
│       
├── tests
│   └── test1.js
│   └── test2.js

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import React, { useState } from 'react';

function Example() {
  // Declare a new state variable, which we'll call "count"
  const [count, setCount] = useState(0);

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>

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import { Component } from "react";
class Tweet extends Component {
    render() {
        return (
            <div>
                {this.props.tweet.map(tweet =>
                   <div key={tweet.tweet_id}>
                        {tweet.tweet_topic}
                        <br />
                        {tweet.tweet_detail}

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import React, { Component } from 'react';
import Tweet from '../component/Tweet';
const tweet = [
    {
        tweet_id: 1,
        tweet_topic: "Sports",
        tweet_detail: "Liverpool, Manchester City ile arasındaki puan farkını 1'e düşürdü."
    },
    {
        tweet_id: 2,

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constructor(props) {
    super(props);
    this.state = {
        categories:
        [
           {categoryId: 1, categoryName: "Sports" },
           {categoryId: 2, categoryName: "Economy"}
        ]
   }; 
}