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let convertToSnake = (camelCased) => {
    let lettersArr = [...camelCased];
    let snaked_str = '';
    lettersArr.forEach(letter => {
      if(letter !== letter.toUpperCase()){
        snaked_str += letter
      } else {
        snaked_str += `_${letter.toLowerCase()}`
      }
    })

sandrabosk

// this solution is the most efficient because it walks the array only once and 
// it doesn't use any helper methods
const firstNonRepeatingLetterA = (str) => {
    let theObj = {};
    for(let i = 0; i< str.length; i++){
      if(theObj[str[i]]){
        theObj[str[i]]+=1;
      } else {
        theObj[str[i]] = 1;
      }

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Rooms App with Reviews - final practice for project #2

Introduction

In previous lessons, we covered all the basics one full stack app can have. Now is the time for you to implement all these features one more time.

Instructions

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To Do App

Introduction

The goal is to create To Do App that will have the following functionalities:

• users can sign up, log in and log out,
• users can create, list, edit and delete projects and
• projects will have tasks.

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Object Oriented Programming - the core

Introduction

For this challenge, you are going to build a mock comments section.

Instructions

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To Do App

Introduction

The goal is to create To Do App that will have the following functionalities:

• anyone can create, list, edit and delete projects and
• projects will have tasks.

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React | UI components of Ant Design for React

Learning goals:

After this lesson you will be able to:

• explain what a component library is and what makes it different from a style library,
• add and configure a component library,
• use and set up a component of antd library

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// new SortedList should create a new object from the SortedList class
// The object should have a items and length property
// items should be an array
// length should be the number of elements in the array

class SortedList {
  constructor(){
    this.items = [];
    this.length = this.items.length;
  }

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// // Soldier
class Soldier {
  constructor(health, strength) {
    this.health = health;
    this.strength = strength;
  }
  attack() {
    return this.strength;
  }
  receiveDamage(damage) {

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console.log("------------ iteration 1 ------------");

// Iteration 1: Names and Input
// 1.1 Create a variable hacker1 with the driver's name.
let hacker1 = "kevin";

// 1.2 Print "The driver's name is XXXX".
console.log(`hacker1's name is ${hacker1}`);

// 1.3 Create a variable hacker2 with the navigator's name.