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(from : https://simplifiedthinking.co.uk/2015/10/03/install-mqtt-server/ )

Installing Brew

The Mosquitto MQTT Server can be easily installed using Homebrew.  If it’s not installed on your system already, then a quick visit to the homepage will give you all you need to get going.  Homebrew is an OS X Package Manager for installing and updating non-Mac OS X utilities that are more commonly found in other variants of Linux.  To install the basic package manager run the following command.

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Installing Mosquitto MQTT

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{"abRemainingSeatList":[],"ticketList":[{"Track_Id":"ODR3691200559234","UserTrackId":"0","adultConcessionAmount":"0.0","adultCount":1,"adultSeats":"9","agesList":"36","amentyAmount":"0.0","boardedLatitude":"17.496448","boardedLongitude":"78.297269","boardingPoint":"1661","boardingSeqNo":1,"boardingTime":"1661^KEERTHI MAHAL BUS STOP \u0026 CITY BUS PASS COUNTER IN BHEL TOWNS^9:30 PM","cessAmount":"0.0","childConcessionAmount":"0.0","childCount":0,"childSeats":"0","concessionAmount":"0.0","concessionId":"1347688949874","concessionShortCode":"REGU","couponCode":"","destination":1188,"destinationId":"10641","dropingPoint":"10641","dropingSeqNo":6,"email":"[email protected]","gstAmount":"0.0","gt_lt":"1","isBoarded":"1","isConcession":"0","isStandingSeat":"0","jDate":"09 May 2020","mobile":"9542829992","offline_online":1,"passengerName":"Yakub","pisAmount":"0.0","psgrGender":"M","safetyCessAmount":"0.0","seatType":"0","selectedSeats":"9","serviceCharge":"","serviceKey":"1437000010515","serviceName":"BHEL(KMHL)-MTM",

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//1. Factory constructor
class SingletonOne { 

  SingletonOne._privateConstructor();

  static final SingletonOne _instance = SingletonOne._privateConstructor();

  factory SingletonOne() {
    return _instance;
  }

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final yesterday = DateTime(now.year, now.month, now.day); // today 12.00.00
final tomorrow = DateTime(now.year, now.month, now.day +1); //tomorrow 12.00.00

int diffInDays = tomorrow.difference(yesterday).inDays;
if (diffInDays == 0){
    //custom code
    print( "same day");
} else if( diffInDays > 0 ) {
    // custom code
    print("tomorrow is greater ");

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import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override

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import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override

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import Foundation
class Array2D<T> {
    let columns: Int
    let rows: Int
    
    var array: Array<T?>
    
    init(columns: Int, rows: Int) {
        self.columns = columns
        self.rows = rows

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import 'dart:math' as math;

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

yakubpashask

import 'dart:convert';
import 'package:moor_flutter/moor_flutter.dart';

part 'database.g.dart';

@DataClassName("Journal")
class Journals extends Table {
  IntColumn get id => integer().autoIncrement()();
  TextColumn get name => text().withLength(min: 1, max: 50)();
  TextColumn get description => text().withLength(min: 1, max: 100)();

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public class StringTest{

    String a = "a"; // String constant pool 
    String b = new String("a");  // heap
    a==b // not true becuase of different memory location based on the way they created
    a.equlas(b) // true
    
    //String b = "a"
    StringBuilder builder  = new StringBuilder();  // Extends the AbstractStringBuilder class - no thread saftey
    StringBuffer buffer = new StringBuffer(); // Extends the AbstractStringBuilder class but all the required methods are synchrnozed so its thread safe