dprabu17

Valid Cards
4242424242424242	Visa
4012888888881881	Visa
5555555555554444	MasterCard
5105105105105100	MasterCard
378282246310005	        American Express
371449635398431	        American Express
6011111111111117	Discover
6011000990139424	Discover
30569309025904    	Diner's Club

dprabu17

import * as React from 'react';
import * as Reactdom from 'react-dom';
import * as loadimage from 'blueimp-load-image';

class ImageViewer extends React.Component<any, any> {
  private imageCanvas;
  public componentDidMount() {
    loadimage('IMAGE_URL', (img) => {
      img.className = 'fit_to_parent'; // css class: { max-width: 100%; max-height: 100%; }
      Reactdom.findDOMNode(this.imageCanvas).appendChild(img);

dprabu17

pg_dump  -F c -h  localhost -U pg_user -d db_name  | gzip -c > sql_dump.gz

#-F format c -> custom 


#Restore

pg_restore -U username  -d db_name -v dumpfile_location   -h localhost

dprabu17

If you haven’t worked with JavaScript in the last few years, these three points should give you enough knowledge to feel comfortable reading the React documentation:

• We define variables with let and const statements. For the purposes of the React documentation, you can consider them equivalent to var.
• We use the class keyword to define JavaScript classes. There are two things worth remembering about them. Firstly, unlike with objects, you don't need to put commas between class method definitions. Secondly, unlike many other languages with classes, in JavaScript the value of this in a method [depends on how it is called](https://developer.mozilla.org/en-US/docs/Web/Jav

dprabu17

#!/usr/bin/env ruby
# Mails a file using GMail's SMTP Server.
# For illustrative purposes; error checking and testing intentionally omitted for brevity.
#
# Requirements: 
#   1) the 'mail' gem must be installed
#   2) a file named 'pw.txt' containing the Google password must be present
#      in the current directory.
#
# Ruby versions: tested on 1.9.3, 1.8.7, JRuby