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1. async-await.js async-await.js

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   var resolveAfter25Seconds = (func) => {

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       console.log(`starting a slow promise on: ${func}`)

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       return new Promise(resolve => {

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           setTimeout(function() {

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               resolve(25)

2. An example of an Angular service con... An example of an Angular service consuming and sending data to an API endpoint,

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   import { Injectable } from '@angular/core'

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   import { Http } from "@angular/http"

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   import 'rxjs/add/operator/map'

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   @Injectable()

3. javascript.js javascript.js

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   // an absctract representation

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   class Person {

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     constructor(name,email) {

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       this.name = name

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       this.email = email

4. is_palindrome.js is_palindrome.js

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   //Given an integer x, return true if x is a palindrome, and false otherwise.

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   const isPalindrome = function(x) {

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       if (x !== 0 && x % 10 === 0) {

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       return false