#GNU Screen Cheat Sheet
##Basics
#First Steps
##Development environment JavaScript is most commonly added to HTML documents as either an embedded or external script.
<!DOCTYPE html>
<html>
<head>
| Array = require('gauss').Vector; | |
| var prices = [22.2734, 22.194, 22.0847, 22.1741, 22.184, 22.1344, | |
| 22.2337, 22.4323, 22.2436, 22.2933, 22.1542, 22.3926, | |
| 22.3816, 22.6109, 23.3558, 24.0519, 23.753, 23.8324, | |
| 23.9516, 23.6338, 23.8225, 23.8722, 23.6537, 23.187, | |
| 23.0976, 23.326, 22.6805, 23.0976, 22.4025, 22.1725]; | |
| /* Use Wilder ratio on an exponential moving average period of 10, | |
| 1 million iterations |
| #!/usr/bin/env python | |
| # encoding: utf-8 | |
| import random | |
| import time | |
| import multiprocessing | |
| if __name__ == '__main__': | |
| """Demonstration of GIL-friendly asynchronous development with Python's multiprocessing module""" |
| /* | |
| * Extend JavaScript String object with printf() like functionality | |
| * "{0} is dead, but {1} is alive!".format("This", "that"); | |
| */ | |
| String.prototype.format = function() { | |
| var formatted = this; | |
| for(arg in arguments) { | |
| formatted = formatted.replace("{" + arg + "}", arguments[arg]); | |
| } | |
| return formatted; |
| var React = require('react/addons'), | |
| TestUtils = React.addons.TestUtils, | |
| TestContext = require('./TestContext'), | |
| App = require('./App.jsx'), | |
| app = TestContext.getRouterComponent(App); | |
| describe('App', function() { | |
| it('has something', function() { | |
| expect(app.getDOMNode().textContent).toContain('something'); | |
| }); |
| %matplotlib inline | |
| import numpy as np | |
| from lifelines import KaplanMeierFitter | |
| from matplotlib import pyplot as plt | |
| from pylab import rcParams | |
| rcParams['figure.figsize'] = 20, 10 | |
| plt.style.use('ggplot') |
| var async = require('async'); | |
| // Waterfall through callbacks using Mongoose to query for a user | |
| async.waterfall([ | |
| function(callback) { | |
| /** Function 1. Find User. | |
| * Pass `user` to Function 2. | |
| */ | |
| User.findOne({ username: 'fred' }, function(error, user) { |
| # Upstart file at /etc/init/couchdb.conf | |
| # CouchDB | |
| start on runlevel [2345] | |
| stop on runlevel [06] | |
| pre-start script | |
| chown -R couchdb /usr/local/etc/couchdb | |
| chown -R couchdb /usr/local/lib/couchdb | |
| chown -R couchdb /usr/local/var/log/couchdb |
| 7 7 | |
| ~:,,:~ | |
| 7 +:,.~~~~~~:~7 | |
| 777777 7~:.?7~~~~~~~~~,:+7 | |
| 77 777 7 7 77~,.:,,:..7~~~~~~~~~.:7 | |
| 7777777777777777777 77~:,7,:~::::,:..~~:~~~~~~~,:7 7 | |
| 7777777777777777777777 777 7 77~:.7::::.:~:::..:::?~~~~~~~~~~,~7 7 | |
| 777777777777777777777777777777777:,=,:::?::::..:~::,~::,.7~~~~~~~~~~,~77 | |
| 77777777777777777777777777777::.7::~::~:...~:::.~?,::::::,.7~~~~~~~~~~,~ 7777777 | |
| 77777777777777777777777777:.~,::::.:~,~:::,~~:::..:~~::::::..+~~~~~~~~~,,~777777 |