Mariano Julio Vicario elranu

Installing Python 3.6 on Raspbian

As of January 2018, Raspbian does not yet include the latest Python release, Python 3.6. This means we will have to build it ourselves, and here is how to do it. There is also an ansible role attached that automates it all for you.

Install the required build-tools (some might already be installed on your system).

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

Two way iframe communication

The main difference between the two pages is the method of sending messages. Recieving messages is the same in both.

Parent

Send messages to iframe using iframeEl.contentWindow.postMessage Recieve messages using window.addEventListener('message')

	import { Injectable } from '@angular/core';
	import * as firebase from 'firebase/app';
	import { AngularFirestore, AngularFirestoreDocument, AngularFirestoreCollection } from 'angularfire2/firestore';
	import { Observable } from 'rxjs/Observable';
	import 'rxjs/add/operator/map';
	import 'rxjs/add/operator/do';
	import 'rxjs/add/operator/take';
	import 'rxjs/add/operator/toPromise';
	import 'rxjs/add/operator/switchMap';

	// Password strengths
	export const enum PasswordCheckStrength {
	Short,
	Common,
	Weak,
	Ok,
	Strong,
	};

	// Object to check password strengths and various properties

	Note for newcomers:

	In the shortcuts below, "C" stands for CTRL and "A" stands for "ALT". This is a convention
	used in the Midnight Commander documentation and was kept here.

	You can also use "ESC" instead of "ALT", which is useful on Macbooks.

	Main View
	---------------------------------------------------------------
	- File/directory operations

	using System;
	using System.Threading;

	static class Program {

	static void Main() {
	Console.Write("Performing some task... ");
	using (var progress = new ProgressBar()) {
	for (int i = 0; i <= 100; i++) {
	progress.Report((double) i / 100);

	(function($) {
	$('.js-share-twitter-link').click(function(e) {
	e.preventDefault();
	var href = $(this).attr('href');
	window.open(href, "Twitter", "height=285,width=550,resizable=1");
	});
	$('.js-share-facebook-link').click(function(e) {
	e.preventDefault();
	var href = $(this).attr('href');
	window.open(href, "Facebook", "height=269,width=550,resizable=1");

	// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	// Hooking up the middleware with the express app
	// In app.js
	// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

	var forceSSL = require('../middleware/ssl').force(config.hostname);
	if ('production' == app.get('env')) {
	app.use(forceSSL);
	}