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// call functionality 
var bar = 80;

function foo(){
   console.log(this.bar);
}
var obj = {'bar' : 10};
var obj2 = {'bar' : 20};

foo.call(obj2);

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var mySingleton = (function () {
 
  // Instance stores a reference to the Singleton
  var instance;
 
  function init() {
 
    // Singleton
 
    // Private methods and variables

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function shape(){

}
shape.prototype.sayhello = function(){}
function newShape(){

}

// copy prototype 
newShape.prototype = shape.prototype;

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function extend(Child, Parent) {

var F = function () {};
F.prototype = Parent.prototype;
Child.prototype = new F();
Child.prototype.constructor = Child;
Child.uber = Parent.prototype;

}
// Using this function (or your own custom version of it) helps you keep your code clean with regard to the repetitive inheritance-related tasks. This way you can inherit by simply using:

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var person = {
  firstname: "Albert",
  lastname: "Einstein",
  get fullname() {
    return this.firstname +" "+this.lastname;
  },
  set fullname(_name){
    var words = _name.toString().split(' ');
    this.firstname = words[0];
    this.lastname = words[1];

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var fs = require('fs')
  , path = 'my_file.txt'
 
function getFile(path, callback) {
  try {
    fs.readFile(path, function(err, data) {
      if(err) throw err
      var wrapperMessage = {coolStuff: true, data: data}
      callback(null, wrapperMessage)
    })

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function findLikesForPostsByUsername(username, callback) {
  findUserByUsername(username, function(err, user) {
    if(err) return callback(err)

    findPostsByUser(user, function(err, posts) {
      if(err) return callback(err)
      
      findLikesByPosts(posts, function(err, likes) {
        if(err) return callback(err)
        

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var http = require('special-http')

function getData(endpoint) {
  var promise = new Promise(function(resolver, rejector) {
    http.get(endpoint).then(function(data) {
      resolver(data)
    }, function(err) {
      rejector(err)
    })
  })

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var webpack = require('webpack');

module.exports = {
    entry: {
         'vendor': './src/vendor.ts',
        'polyfills': './src/polyfills.ts',
        'app': './src/main.ts'
    },

    resolve: {

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import { FormsModule } from '@angular/forms';
import  LoaderComponent  from './loader/loader-component';
import { NgModule } from '@angular/core';
import { BrowserModule }  from '@angular/platform-browser';
import { AppComponent } from './app.component';
import HeaderComponent from './header/app-header';
import FooterComponent from './footer/app-footer';
import MainComponent from './main/main-result';
import {LoaderService} from './loader/loader-service';
import {HttpClient} from './http.service';