mirajehossain

#install mongodb

# Step 1 - Import the public key used by the package management system

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 68818C72E52529D4


# Step 2 - Create source list file MongoDB

#Create a MongoDB list file in /etc/apt/sources.list.d/ with this command:

mirajehossain

/*
 * Inspired by: http://stackoverflow.com/questions/4360060/video-streaming-with-html-5-via-node-js
 */

var http = require('http'),
    fs = require('fs'),
    util = require('util');

http.createServer(function (req, res) {
  var path = 'video.mp4';

mirajehossain

import 'dart:async';
import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:flutter_sqflite_app/model/user.model.dart';


class ApiService {
  static final BASE_URL = "https://xxxxxxxx.herokuapp.com";
  static final LOGIN_URL = BASE_URL + "/auth/v1/users/login";

mirajehossain

/*
{
  "status": true,
  "message": "Message",
  "statusCode": 200,
  "data": {
    "access_token": "mytoken here"
  }
}
*/

mirajehossain

const express = require('express');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const multer = require('multer');
const index = require('./routes/index');

const app = express();

mirajehossain

let persons = [
   { name: 'John', age: 25, gender: 'male'},
   { name: 'Doe',  age: 35, gender: 'male'},
   { name: 'Nayla',age: 18, gender: 'female'},
   { name: 'Alex', age: 21, gender: 'female'}, 
   { name: 'Jane', age: 22, gender: 'male'}
];

let age = persons.filter((person)=>{
  return person.gender === 'male';

mirajehossain

let arr = [1,2,3,4,5];
/// with initial value
let result = arr.reduce((accumulator,currentValue,currentIndex,array)=>{
  console.log(`result: ${accumulator}, current value: ${currentValue}, index: ${currentIndex}, array: ${array} `);
  return accumulator + currentValue;
},0);
///OUTUT:
result: 0, current value: 1, index: 0, array: 1,2,3,4,5 
result: 1, current value: 2, index: 1, array: 1,2,3,4,5 
result: 3, current value: 3, index: 2, array: 1,2,3,4,5 

mirajehossain

let arr = [1,2,3,4,5];

let result = arr.reduce((accumulator,currentValue)=>{
  return accumulator + currentValue;
});
console.log(result); /// 15

mirajehossain

let numbers = [1,2,3,4,5,6,7,8,9,10];
// using for loop
let evenNumbers = [];
for(let i=0; i<numbers.length; i++){
  if(numbers[i] % 2 === 0) evenNumbers.push(numbers[i]);
}
console.log(evenNumbers);

// using filter
let evenNumbers = numbers.filter(item=> item % 2 === 0);

mirajehossain

let newDepartments = departments.filter(department=>{
 return department.student<=5000;
});
//output:
  [ 
      { name: 'EEE',    student: 2000}, 
      { name: 'CSIT',   student: 5000}, 
      { name: 'ME',     student: 4500}, 
      { name: 'LAW',    student: 2500}
  ]