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const animals = [
    {animal: 'zebra', count: 4}, {animal: 'tiger', count: 2},
    {animal: 'lion', count: 3}, {animal: 'turtle', count: 9},
    {animal: 'pig', count: 2},
];

console.log('reduce() example');
const count = animals.reduce((total, curr) => {
    return total += curr.count;
}, 0);

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const fruits = [ 'pineapple', 'apple', 'banana', 'pear' ];

console.log('map() example');
const upperCaseFruits = fruits.map((value) => {
    return value.toUpperCase();
});

console.log('upperCaseFruits =', upperCaseFruits, '\n');

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const fruits = [ 'pineapple', 'apple', 'banana', 'pear' ];

const matchedFruits = fruits.filter((element) => {
    return element.includes('apple');
});


let matchedFruitsAgain = [];
for (let i = 0; i < fruits.length; i++) {
    if (fruits[i].includes('apple')) {

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const fruits = ['pineapple', 'apple', 'banana','pear'];

const aFruit = fruits.find((element) => {
    return element.includes('apple');
});


let aFruit;
for (let i = 0; i < fruits.length; i++) {
    if (fruits[i].includes('apple')) {

iandesj

const fruits = [ 'pineapple', 'apple', 'banana', 'pear' ];

// improved looping
fruits.forEach((value, index, array) => {
    console.log('fruit at index', index, '=', value);
});

// what you may already be used to
for (let i=0; i<fruits.length; i++) {
    console.log('fruit at index', i, '=', fruits[i]);

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import datetime
from github import Github

g = Github('token')
me = g.get_user()
repos = me.get_repos()

def is_a_repo_contributor(repo):
    contributors = repo.get_contributors()
    return me.id in map(lambda con: con.id, contributors)

iandesj

// before - 5 args too many
function initializeNewUserWorflow(
    email, password, location,
    organization, referred) {
    // initialize the new user
}

// after - using configuration object
const initializeUserConfiguration = {
    email: 'email',

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// before method simplification
function parseAndSanitizeAndGenerateDocument(data) {
    const parsedData = [];
    for (let index = 0; index < data.length; index++) {
        const element = data[index];
        if (element.name === 'bacon') {
            parsedData.push({
                name: element.name,
                age: element.age,
            });

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// before named boolean expressions
// check if the user is active and if the user has
// dependents
if (user.status === 'active' && 
     user.dependents.length > 1) {
    // perform something important
}

// before
if (!user.authenticated) {

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// before good naming
const user = getActiveUser();

const peopleData = fetchData();

function beginProc(data) {}

const d = new Date();

class CatRepository {