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#Create a CustomLazyAPIKeyLoader class file and extends MapsAPILoader

import { GoogleMapsScriptProtocol, LAZY_MAPS_API_CONFIG, LazyMapsAPILoaderConfigLiteral, MapsAPILoader } from '@agm/core';
import { DocumentRef, WindowRef } from '@agm/core/utils/browser-globals';
import { Inject, Injectable } from '@angular/core';

import { AppGlobals } from './../../Common/Services/app.global';

@Injectable()
export class CustomLazyAPIKeyLoader extends MapsAPILoader {

msaxena25

Here are steps to generate google restrict key:

1. Go to site: https://console.developers.google.com/projectselector/apis/credentials?supportedpurview=project

2. Log in to the page with your Gmail account

3. Create or Select your project.
    a. If you already created a project before then you can select that one.
    b. Else click on create button to create a project. 

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import { Inject, Injectable, Optional } from '@angular/core';
import { DateAdapter, NativeDateAdapter } from '@angular/material';

export class AppDateAdapter extends NativeDateAdapter {
    parse(value: any): any {
        if (value) {
            const timestamp = typeof value === 'number' ? value : Date.parse(value);
            let date_regex = /([0-9]{2}[0-9]{1}\d{1})-([0]{1}[1-9]{1}|[1]{1}[0-2]{1})-([0]{1}[1-9]{1}|[12]{1}\d{1}|[3]{1}[01]{1})/; // Can you own regex or remove it.
            if (date_regex.test(value)) {
                return isNaN(timestamp) ? null : new Date(timestamp);

msaxena25

This algorithm will first find the smallest element in the array and swap it with the element in the first position, 
then it will find the second smallest element and swap it with the element in the second position,
and it will keep on doing this until the entire array is sorted.


// Method to find Minimum Value and Minimum Index

function findMinIndex(arr, startIndex) {
  var minIndex = startIndex;
  var minValue = arr[startIndex];

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function printFib(count) {
  var n1 = 0; // first char is 0 of fibonacci series
  var n2 = 1; // seconds char is also fixed '1'

  var output = "";

  output = n1 + " " + n2;
  // loop start from 2 because we know the first and second chars
  for (var i = 2; i < count; i++) {

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//First non repeating char :  How could you find the first non repeating char in a string?
function firstNonRepeatChar(s) {
  for (var i = 0; i < s.length; i++) {
    var letter = s.charAt(i);
    if (s.substring(s.indexOf(letter) + 1, s.length).indexOf(letter) == -1) {
      console.log(letter);
      break;
    }
  }
}

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1. Compare two arrays contains Object type element
2. Below we are checking based on one property "id"
3. remove duplicate items


(<any>Array.prototype).unique = function () {
  var a = this.concat();
  for (var i = 0; i < a.length; ++i) {
    for (var j = i + 1; j < a.length; ++j) {
      if (a[i].id === a[j].id)  // checking based on id property

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      (<any>window).gapi.load('auth2', () => {
        (<any>window).gapi.auth2.init().then(() => {
          var auth2 = (<any>window).gapi.auth2.getAuthInstance();
          auth2.signOut().then((res) => {
            if (response.responseCode == 'S0001') {
              window.location.href = '/login';
            }
          })
            .catch((err) => { console.log('error is ', err) });

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  navigator.onLine  -->  Check for Internet connection
  navigator.cookieEnabled  --> Check for Cookies Enabled.
  
  
  
  if (navigator.onLine == false || navigator.cookieEnabled == false) {
      this._router.navigate(['/offline']);  // create a new page named like "offline" & redirect to that  page
      this.util.isOffline = true; // for custom use to activate route
    }

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getFile(id) {

 this.newWindow = window.open();
        this.downloadDocument(id).subscribe(response => {   // API -  this.downloadDocument(id) 
            this.util.removeLoader();
            this.downloadFileFromBlob(response["_body"]);
        }, error => { })

}