Harshakvarma

Interview Questions

Table of Contents

No.	Questions
1	What do you mean by Asynchronous API?☆☆
2	What are the benefits of using Node.js?☆☆
3	Is Node a single threaded application?☆☆
4	What is global installation of dependencies?☆☆
5	What is an error-first callback?☆☆

Harshakvarma

var userLoginDetails = {userId: '53453455'} // function names (Camel Case)

var UserLoginDetails = {userId: '53453455'} // Class names (Pascal Case)

var user_login_details = {userId: '53453455'} // local constants (Snake Case)

var USER_LOGIN_DETAILS = {userId: '53453455'} // shared constants (All Caps Snake Case)

var value = 'user-login-details' // value (Kebab Case)

Harshakvarma

Add class with various methods

Add to string in javascript

https://stackoverflow.com/questions/2970525/converting-any-string-into-camel-case

String.prototype.toCamelCase = function() {
    return this.replace(/^([A-Z])|\s(\w)/g, function(match, p1, p2, offset) {
        if (p2) return p2.toUpperCase();
        return p1.toLowerCase();        
 });

Harshakvarma

{
  "editor.fontFamily": "FiraCode-Retina",
  "editor.fontLigatures": true,
  "terminal.integrated.shell.osx": "/bin/zsh",
  "workbench.activityBar.visible": true,
  "window.zoomLevel": 0,
  "[typescript]": {
    "editor.defaultFormatter": "vscode.typescript-language-features"
  },
  "workbench.editor.showTabs": true,

Harshakvarma

const USER = require("../../src/db/userDB");
const moment = require("moment");
const Sequelize = require('sequelize');
const config = require("config");
const plaid  = require('plaid');
const util   = require('util');
const pe = require('parse-error');

var PLAID_CLIENT_ID  = config.get("plaidCred.PLAID_CLIENT_ID");
var PLAID_SECRET     = config.get("plaidCred.PLAID_SECRET");

Harshakvarma

const USER = require("../../src/db/userDB");
const moment = require("moment");
const Sequelize = require('sequelize');
const config = require("config");
const plaid  = require('plaid');
const util   = require('util');
const pe = require('parse-error');

var PLAID_CLIENT_ID  = config.get("plaidCred.PLAID_CLIENT_ID");
var PLAID_SECRET     = config.get("plaidCred.PLAID_SECRET");

Harshakvarma

const USER = require("../../src/db/userDB");
const moment = require("moment");
const Sequelize = require('sequelize');
const config = require("config");
const plaid  = require('plaid');
const util   = require('util');
const pe = require('parse-error');

var PLAID_CLIENT_ID  = config.get("plaidCred.PLAID_CLIENT_ID");
var PLAID_SECRET     = config.get("plaidCred.PLAID_SECRET");

Harshakvarma

Archwomen.ics file

BEGIN:VCALENDAR
PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
VERSION:2.0
BEGIN:VEVENT
CREATED:20170220T182458Z
LAST-MODIFIED:20170220T182458Z
DTSTAMP:20170220T182458Z

Harshakvarma

Sample crontab

https://crontab.guru/ - online crontab generator

1. Empty temp folder every Friday at 5pm

# ┌───────────── minute (0 - 59)
# │ ┌───────────── hour (0 - 23)
# │ │ ┌───────────── day of month (1 - 31)
# │ │ │ ┌───────────── month (1 - 12)
# │ │ │ │ ┌───────────── day of week (0 - 6) (Sunday to Saturday;

Harshakvarma

import os
import time
import logging
from datetime import datetime

#logs
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)

# create a file handler