Quick overview of arrow functions

app.js

// ES5 Function
function sayHi(name){
  return "Hello, there " + name + "!";
}

// console.log(sayHi("Doug")); // "Hello, there Doug!"

// new var

// ES6 Arrow Function
const sayHello = (name) => {
  return "Hello, there " + name + "!";
}


// example using string interpolation
const sayHello2 = (name, age) => {
  return `Hello, there ${name}, whats your ${age}!`;
}

// console.log(sayHello2("Doug", 18));

// const sayHello3 = (name) => `Hello, there ${name}`
const sayHello3 = name => `Hello, there ${name}`


// console.log(sayHello3("Doug"))

// function getSum(a,b) {
//   return a + b
// }
//
// const getSum = (a,b) => a + b;

const getSum = (a,b) => {
  return a + b;
}

// console.log(getSum(3,6));

const numbers = [1,3,5,6,8,9,10];

// map through and return an array of objects, with count property.
var mappedNumbers = numbers.map(function(num){
  return {count: num}
});

const mappedNumbers2 = numbers.map((num) => {
  return {count: num}
});

const stillNums = numbers.map(num => num);


// filter and return nums greater than 6 using an arrow function.
const filteredNums = numbers.filter((n) => n > 6);

const filteredNums = numbers.filter((n) => {
  return n > 6
});

console.log(filteredNums);


// Objects

// ES5
var name = "Doug";
var age = 22;

var person = { name: name, age: age };

// ES6
const nombre = "Doug";
const anons = 22;

const persono = { nombre, anons };