Jose Miguel Colella josecolella

## gist:3a58765a156eec71c8705f1f6aca342b

      
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                josecolella
                / gist:3a58765a156eec71c8705f1f6aca342b
            
            
              Created
              November 28, 2017 21:15
                — forked from jsumners/gist:e6b5d0a699f16ba980a3
            
              
                Introduction to Sequelize Migrations
              
          
    What are Migrations

Just like how we use Git to version control source code, we use migrations to manage the state of our database schemas.
I'm not really sure what that means...

Imagine you're working on project with another developer, and you're both tasked with creating a specific part of an event planning application. Let's say you are in charge of creating the Users and your friend is going to create the Events.
Let's say you and your friend divided the work in a way so that neither of you will have to to use each other's code to finish your tasks. While you're working on your part of the application, you only really need to touch the Users table when you are working with the database.
Creating models and migrations


## pre-render.js
// pre-render d3 charts at server side
var d3 = require('d3')
	, jsdom = require('jsdom')
	, fs = require('fs')
	, htmlStub = '<html><head></head><body><div id="dataviz-container"></div><script src="js/d3.v3.min.js"></script></body></html>'

jsdom.env({
	features : { QuerySelector : true }
	, html : htmlStub
	, done : function(errors, window) {

## python-selenium-open-tab.md

      
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                josecolella
                / python-selenium-open-tab.md
            
            
              Last active
              September 3, 2015 09:54
                — forked from lrhache/python-selenium-open-tab.md
            
              
                Python Selenium - Open new tab / focus tab / close tab
              
          
    On a recent project, I ran into an issue with Python Selenium webdriver. There's no easy way to open a new tab, grab whatever you need and return to original window opener.
Here's a couple people who ran into the same complication:

http://stackoverflow.com/questions/17547473/how-to-open-a-new-tab-using-selenium-webdriver
http://stackoverflow.com/questions/6421988/webdriver-open-new-tab/9122450#9122450
https://groups.google.com/forum/#!topic/selenium-users/kah4iEPRopc
... and many many more.

So, after many minutes (read about an hour) of searching, I decided to do find a quick solution to this problem.

  
## parhttp.py
#!/usr/bin/env python

from multiprocessing import Process, Pool
import time
import urllib2

def millis():
  return int(round(time.time() * 1000))

def http_get(url):
	// pre-render d3 charts at server side
	var d3 = require('d3')
	, jsdom = require('jsdom')
	, fs = require('fs')
	, htmlStub = '<html><head></head><body><div id="dataviz-container"></div><script src="js/d3.v3.min.js"></script></body></html>'

	jsdom.env({
	features : { QuerySelector : true }
	, html : htmlStub
	, done : function(errors, window) {
	#!/usr/bin/env python

	from multiprocessing import Process, Pool
	import time
	import urllib2

	def millis():
	return int(round(time.time() * 1000))

	def http_get(url):