iandesj

// 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,
            });

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',

iandesj

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

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]);

iandesj

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' ];

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


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

iandesj

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

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

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

iandesj

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);

iandesj

const year = 2019;
const month = 10; // november, zero-indexed
const startDay = 14;

console.log('Array.from() example');
const dateList = Array.from({length:7}, (val, idx) => {
    return new Date(year, month, startDay + idx);
});

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

iandesj

const taxPayer = [ 'Ian', 'DesJardins', '123-45-6789', true ];

console.log('Array destructuring example');
// destructure the taxPayer array into new variables
const [ firstName, lastName, ssn, pastDue ] = taxPayer;
console.log('firstName =', firstName);
console.log('lastName =', lastName);
console.log('ssn =', ssn);
console.log('pastDue =', pastDue, '\n');