rao123dk

const customMiddleWare = storeAPI => next => action => {

    console.log("prev state:", storeAPI.getState())
    console.log("dispatching Actions", action);
    console.log("next state:", storeAPI.getState())
    return next(action);
}

rao123dk

git submodule add https://github.com/rao123dk/rao123dk.github.io

git submodule update --init --recursive

git submodule foreach git checkout develop

git submodule foreach git pull origin develop

rao123dk

[
    { fNumner: 'Air222', fName: 'Air india', email: 'AirIndia@demo.com', departure: '7:30', from: 'London', to: 'Delhi', arrival: "18:30 Next Day", price: "$430.00", seatAvaible: 34, duration:'12 hrs'},
    { fNumner: 'Air333', fName: 'Air india', email: 'AirIndia@demo.com', departure: '12:30', from: 'London', to: 'Delhi', arrival: "8:30 Next Day", price: "$430.00", seatAvaible: 17, duration:'12 hrs'},
    { fNumner: 'Air444', fName: 'Air india', email: 'AirIndia@demo.com', departure: '9:30', from: 'London', to: 'Delhi', arrival: "8:30 Next Day", price: "$430.00", seatAvaible: 44, duration:'12 hrs'},
    { fNumner: 'Air021', fName: 'Air india', email: 'AirIndia@demo.com', departure: '7:30', from: 'France', to: 'Delhi', arrival: "18:30 Next Day", price: "$412.00", seatAvaible: 14 , duration:'15 hrs' },
    { fNumner: 'BJ001', fName: 'Britesh Jet', email: 'British@demo.com', departure: '12:30', from: 'London', to: 'France', arrival: "12:30 Next Day", price: "$444.00", seatAvaible: 312,duration:'14 hrs' },
   

rao123dk

const express = require('express');
const app = express();

// Application
app.get('/', function(req, res) {
  if (process.env.NODE_ENV === 'development') {
    for (var key in require.cache) {
      delete require.cache[key];
    }      
  }

rao123dk

const { Readable } = require('stream'); 

function bufferToStream(binary) {
        const readableInstanceStream = new Readable({
          read() {
            this.push(binary);
            this.push(null);
          }
        });
        return readableInstanceStream;

rao123dk

(A) This command will print out each folder, and even show us how much space the folder is occupying


// Mac / Linux:

find . -name "node_modules" -type d -prune -print | xargs du -chs

//Windows:
FOR /d /r . %d in (node_modules) DO @IF EXIST "%d" echo %d"

rao123dk

const crypto = require('crypto');

const ENCRYPTION_KEY = "XwPp9xazJ0ku5CZnlmgAx2Dld8SHkAeT" //Must be 256 bits(32 byte) (32 characters)
const IV_LENGTH = 16; // For AES, this is always 16

function encrypt(text) {
 let iv = crypto.randomBytes(IV_LENGTH);
 let cipher = crypto.createCipheriv('aes-256-cbc', Buffer.from(ENCRYPTION_KEY), iv);
 let encrypted = cipher.update(text);

rao123dk

const checkDevice = () => {
    let check = false;
    (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|

rao123dk

(A)Array.prototype.unique = function(){
	return this.filter((value, index, self)=>(
	   self.indexOf(value) === index 
  ));
}
var names = ["dk", "rao","dk","jsk"];
console.log(names.unique());


(B) var j = [...new Set(names)]

rao123dk

var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://localhost:27017/";
var mongoose = require('mongoose');

 var myobj = {
    "billPlan" : "Annual",
     "code" : 20003,
    "rating" : {
      "totalFees" : "27K",
        "Code" : 201704,