katepapineni

const rFunc = n => (n === 0 ? 1 : n * rFunc(n - 1));

// What's the ouput? What's the base case?
console.log(rFunc(4));

katepapineni

/* || operator vs. If */
const hero = { name: 'Wonder Woman', age: 0, address: null };

// As || operator
const getOrOperator = ({ name, age, address }) => (
  address   // hero.address is falsy 
  || age    // hero.age is falsy 
  || name   // hero.name is truthy so short-circuits and is returned
  || 'hero' // default
);

katepapineni

const min = 4;
const max = 9;

const getNum = num => Math.min(max, Math.max(min, num));

// What's the output?
console.log(getNum(6));
console.log(getNum(3));
console.log(getNum(10));

katepapineni

const getRange = (start, end) => {
    const range = [];
    const date = new Date(start);
    const toDate = new Date(end);

    while (date <= toDate) {
        range.push(new Date(date));
        date.setDate(date.getDate() + 1);
    }
    return range;

katepapineni

const numbers = [3, 11, 29, 19, 7];

const sort1 = (a, b) => a - b;
const sort2 = (a, b) => b - a;

// What's the output ?
console.log(numbers.sort(sort1));
console.log(numbers.sort(sort2));

katepapineni

const cities = ['Sydney', 'Rome', 'Tokyo', 'Delhi', 'Zurich', ];

const getCity = (city) => {
  return cities.splice(city, 2);
}

const city1 = getCity(cities.indexOf('Seattle'));
cities.length = 5;
const city2 = cities[cities.length - 1];

katepapineni

const flights = [
    { route: 'Frankfurt to Hong Kong', hours: 11.5 },
    { route: 'San Fransisco to Delhi', hours: 15.75 },
    { route: 'Singapore to Paris', hours: 13.5 },
    { route: 'Delhi to Dubai', hours: 4 },
];

const findFlights = (city) => {
    return (flight) => {
        return flight.route.includes(city);

katepapineni

/* Ternary vs. If-Else */
const min = 2;
const max = 7;

// As Ternary operation
const getNumTernary = (num) => {
    return num < min ? min : num > max ? max : num;
}
   
// As If - Else statements

katepapineni

const hero1 = { name: 'Wonder Woman', age: 0, address: null, };
  
const hero2 = { name: 'Thor', age: 1500, address: '', };

const getInfo = ({ name, age, address }) => (
    address
    || age 
    || name
    || 'hero'
);

katepapineni

const min = 2;
const max = 7;

const getNum = (num) => {
  return num < min ? min : num > max ? max : num;
}

// What's the output?
console.log([getNum(9), getNum(1), getNum(4)].join(' + '));