abinavseelan

function Queue() {
  this.values = [];
  this.count = 0;
}

Queue.prototype.enqueue = (newValue) => {
  this.values[this.count] = newValue;
  this.count++;
}

abinavseelan

Input Type	Result
Undefined	No Conversion
Null	No Conversion
Boolean	No Conversion
Number	No Conversion
String	No Conversion
Object	Return a default value for the Object. The default value of an object is retrieved by calling the internal [[DefaultValue]] method of the object, passing the optional hint PreferredType

abinavseelan

Input Type	Result
Undefined	NaN
Null	+0
Number	No Conversion
Boolean	The result is 1 if the argument is true. The result is +0 if the argument is false.
...	...

abinavseelan

const db = firebase.firestore();

const usersRef = db.collection('users'); // Get a reference to the Users collection;

// Set the specific user's online status to true
usersRef
  .doc(userId)
  .set({
    online: true,
  }, { merge: true});

abinavseelan

const oldRealTimeDb = firebase.database();

oldRealTimeDb
  .ref('/some/random/key') // Making a reference to a key-value pair in the old real-time database structure
  .onDisconnect() // Setting up the onDisconnect hook
  .set('This string will be set for the referenced key once the client disconnects!');

abinavseelan

const functions = require('firebase-functions');
const Firestore = require('@google-cloud/firestore');

const firestore = new Firestore();

exports.onUserStatusChanged = functions.database
  .ref('/status/{userId}') // Reference to the Firebase RealTime database key
  .onUpdate(event => {
    const usersRef = firestore.collection('/users'); // Create a reference to the Firestore Collection
  

abinavseelan

const firestoreDb = firebase.firestore();
const oldRealTimeDb = firebase.database();

const usersRef = firestoreDb.collection('users'); // Get a reference to the Users collection;
const onlineRef = oldRealTimeDb.ref('.info/connected'); // Get a reference to the list of connections

onlineRef.on('value', snapshot => {
  // Set the Firestore User's online status to true
  usersRef
    .doc(userId)

abinavseelan

const firestoreDb = firebase.firestore();
const oldRealTimeDb = firebase.database();

const usersRef = firestoreDb.collection('users'); // Get a reference to the Users collection;
const onlineRef = oldRealTimeDb.ref('.info/connected'); // Get a reference to the list of connections

onlineRef.on('value', snapshot => {
  
  oldRealTimeDb
    .ref(`/status/${userId}`)

abinavseelan

const handler = {
  get: function() {
    console.log('A value has been accessed');
  }
}

const initialObj = {
  id: 1,
  name: 'Foo Bar'
}

abinavseelan

const handler = {
  get: function(obj, prop) {
    console.log('A value has been accessed');
    return obj[prop]; // Return the value stored in the key being accessed
  }
}

const initialObj = {
  id: 1,
  name: 'Foo Bar'