ronapelbaum

language: node_js
node_js:
  - "6"

script:
  - npm run lint
  - npm run build
  - npm test

ronapelbaum

/**
 * https://dev.to/coderbyte/a-common-coding-interview-question-461f
 * https://jsfiddle.net/ronapelbaum/yLkbg4v1/
 */
function sol1(arr1, arr2) {
  // O(n*m)
  return arr1.filter(d => arr2.includes(d));
}

function sol2(arr1, arr2) {

ronapelbaum

/**
 * https://jsfiddle.net/ronapelbaum/qk6mcrae/
 */
// HOF get a func and returns a func
function createFilterFunc(fn) {	
	return function(arr) {
  	const res = [];
    for(let i = 0; i < arr.length; i++) {
    	if(!!fn(arr[i])) {
        res.push(arr[i]);

ronapelbaum

const proc = require('child_process');

const gitGetTag = cb => proc.execFile('git', ['describe', '--abbrev=0', '--tags'], (err, res) => cb(res.trim()));
const gitPutTag = (tag, cb) => proc.execFile('git', ['tag', tag], (err, res) => cb(res.trim()));

const parseTag = (tag) => {
  try {
    return /v(\d+)\.(\d+)\.(\d+)(-(\d+))?/.exec(tag).slice(1)
  } catch (e) {
    // do nothing

ronapelbaum

const sleep = ms => new Promise(res => setTimeout(()=>res(ms), ms))

// main1();
//  main2();
// run(main3);
run2(main3);

function main1() {
	console.log(1);
	sleep(100).then(t => console.log(2, t));

ronapelbaum

const app = () => {
    const list = []
    return {
        add: (item) => list.push(list),
        get: () => list.slice(0),
    }
}
module.exports = app

ronapelbaum

{
  "name": "my-package",
  "version": "1.2.0",
  "scripts": {
    "patch-version": "node patch-version.js",
    "tag-version": "node tag-version.js \"release-tag\"",
    "prerelease": "npm run patch-version && npm run tag-version",
    "release": "npm publish",
  }
}

ronapelbaum

interview: front end developer

basic algorithm

1. implement function reverseString(str)
2. implement function factorial(n)
3. implement function removeFromArray(arr, arg1, arg2, ...)

javascript

1. What will be the output of this:

ronapelbaum

When you try to add eslint to a large project, you better try this approach as in this script.

Now, you want to enforce your team members to actually remove the /* eslint-disable */ comment at file header, for all files that they've changed.

Here you go.

ronapelbaum

Interview: Front-End developer (answers)

basic algorithm

1. implement function reverseString(str)

• use simple iteration
• split() vs join()
• array vs string

2. implement function factorial(n)

• use simple recurtion