Cees Timmerman CTimmerman

Coal ash contains more energy than was gained from burning the coal.

https://www.world-nuclear.org/information-library/facts-and-figures/heat-values-of-various-fuels.aspx

Natural uranium, in FNR                28,000,000 MJ/kg [so 28e9 J/g]
Hard black coal (IEA definition)            >23.9 MJ/kg
Hard black coal (Australia & Canada)        c. 25 MJ/kg [so 25e3 J/g and 207.25 g/mol according to https://pubchem.ncbi.nlm.nih.gov/compound/1-Anthrylmethanolate]
Sub-bituminous coal (IEA definition)    17.4-23.9 MJ/kg
Sub-bituminous coal (Australia & Canada)    c. 18 MJ/kg
Lignite/brown coal (IEA definition)         <17.4 MJ/kg

gunicorn run:app --workers=9
gunicorn run:app --workers=9 --worker-class=meinheld.gmeinheld.MeinheldWorker

Macbook Pro 2015 Python 3.7

Framework	Server	Req/s	Max latency	+/- Stdev

Fix horizontal scrolling in Chrome: defaults write com.google.Chrome AppleEnableSwipeNavigateWithScrolls -bool FALSE and restart Chrome. Fix autoscroll with AutoScroll.

Minimized windows don't even appear in Chrome's autocomplete!

Disable MacOS widget popover gesture via System Settings, "trackpad gestures", More Gestures, Notification Centre off.

Windows shortcut equivalents:

Alt+Enter or F11 = Cmd+Ctrl+F or Globe+F
Alt+Tab = Cmd+Tab (Switch app.) or Cmd+` (Switch app window.) No minimized windows. Witch is a bit slow but can cycle windows with Opt+Tab like Windows does, including the browser window you minimized to get to the one behind it, albeit without thumbnails. AltTab is better, also because it doesn't raise all w

Install Git distributed version control software.
Set up your default credentials (or display without a value to set):

$ git config --global user.name "John Doe"
$ git config --global user.email johndoe@example.com

or if he's a GitHub user, so you see his icon: johndoe@users.noreply.github.com

For example on MacOS:

	<html>
	<!-- Thanks to https://medium.freecodecamp.org/learn-react-js-in-5-minutes-526472d292f4 -->
	<head>
	<script src="https://unpkg.com/react@15/dist/react.min.js">//React controllery stuff.</script>
	<script src="https://unpkg.com/react-dom@15/dist/react-dom.min.js">//More React controllery stuff.</script>
	<script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js">//Translates JSX to JS.</script>
	</head>
	<body>
	<div id="root">Target node for our React code.</div>
	<script type="text/babel">

	"""Download with automatic resume.
	2018-06-28 v1.0 by Cees Timmerman
	2018-07-09 v1.1 Added If-Unmodified-Since header for consistency."""
	import os, shutil, sys, time
	import requests # python -m pip install requests

	def download_file(url, local_filename=None):
	if not local_filename:
	local_filename = url.split('/')[-1]

	#!/usr/bin/env python
	# -- coding: utf-8 --

	from flask import Flask, request
	from urllib import unquote_plus
	import json
	import re


	app = Flask(__name__)

	""" SICP section 2.2.3, page 160.
	We can rearrange the pieces and use them in computing the product of the squares of the odd integers in a sequence:

	(define (product-of-squares-of-odd-elements sequence) (accumulate * 1 (map square (filter odd? sequence))))
	(product-of-squares-of-odd-elements (list 1 2 3 4 5))
	225

	2017-09-13 v1.0 Translated & benchmarked by Cees Timmerman
	"""
	from __future__ import print_function # For Python 2.

	#!/usr/bin/env bash

	echo "Benchmark for Fibonacci numbers with Python3, Cython and PyPy"

	echo '
	def fib(n):
	"Return the n-th Fibonacci number."
	i = 0
	a, b = 0, 1
	if n < 2:

	/*
	* Handling Errors using async/await
	* Has to be used inside an async function
	*/
	try {
	const response = await axios.get('https://your.site/api/v1/bla/ble/bli');
	// Success 🎉
	console.log(response);
	} catch (error) {
	// Error 😨