❓ CHALLENGE

const data = [
  { id: 1, name: 'Alice', skills: ['JavaScript', 'HTML'] },
  { id: 2, name: 'Bob', skills: ['JavaScript', 'CSS'] },
  { id: 3, name: 'Charlie', skills: ['HTML', 'CSS'] },
];

const result = data.reduce((acc, person) => {
  person.skills.forEach(skill => {
    acc[skill] = acc[skill] ? acc[skill] + 1 : 1;
  });
  return acc;
}, {});

console.log(result);

👩‍💻 qnm: A CLI Tool to Look Into node_modules

If you’ve ever gone into node_modules and been overwhelmed, this tool, supporting both npm and Yarn, lets you dig around with some guidance as to what is what. You can use fuzzy search to find specific things and also see which modules are using the most space.

RAN YITZHAKI

❓ CHALLENGE

const data = [1, 2, 3, 4, 5];

const result = data.reduce((acc, val) => acc.concat(Array.from({ length: val }, (_, index) => val + index)), []);

console.log(result);

❓ CHALLENGE

const data = [1, 2, 3, 4, 5];

const result = data.flatMap(num => Array(num).fill(num * 2));

console.log(result);

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❓ CHALLENGE

const data = [
  { id: 1, name: 'Alice', age: 25, gender: 'Female' },
  { id: 2, name: 'Bob', age: 30, gender: 'Male' },
  { id: 3, name: 'Charlie', age: 22, gender: 'Male' },
  { id: 4, name: 'David', age: 35, gender: 'Male' },
];

const result = data.filter(person => person.gender === 'Male').map(person => person.age).reduce((acc, age) => acc + age, 0);

console.log(result);

👩‍💻 Table of Contents: Build your own X

This repository is a compilation of well-written, step-by-step guides for re-creating our favorite technologies from scratch.

codecrafters-io

❓ CHALLENGE

const numbers = [1, 2, 3, 4, 5];

const result = numbers.reduce((acc, num) => {
  if (num % 2 === 0) {
    acc.even += num;
  } else {
    acc.odd *= num;
  }
  return acc;
}, { even: 0, odd: 1 });

console.log(result);

👩‍💻 Vue 3.4 Released

Vue 2 went ‘end of life’ last week, but never fear, we got a new version of Vue 3 to make up for it, complete with a rewritten, faster template parser, and a more efficient reactivity system. If you prefer a screencast tour, ▶️ Erik Hanchett has one for you.

EVAN YOU

👀 Java vs JavaScript | Friends or Enemies

In the modern IT industry, Java and JavaScript stand as leading programming languages for building scalable and reliable software systems. They offer flexibility and automation capabilities for implementing business rules.

Gnel Simonyan

👀 Let's Bring Back JavaScript's with Statement..?

Famously roasted in JavaScript: The Good Parts before its deprecation, with isn’t a popular language feature at all, so Alex's appeal here is partly tongue in cheek. Nonetheless, with has some potentially interesting uses in modern JavaScript.

ALEX MACARTHUR

❓ CHALLENGE

function Car(make, model) {
  this.make = make;
  this.model = model;
}

Car.prototype.displayInfo = function () {
  return `Make: ${this.make}, Model: ${this.model}`;
};

const myCar = new Car('Toyota', 'Camry');

console.log(myCar.displayInfo());