Cromat cromat

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

PostgreSQL 9.x Sequence Fixing Script

This script is intended to automatically fix the sequence numbers for all tables in the current database.

This is accomplished through the use of the setval() command, which we provide with the next ID value we wish to make use of. We use the setval(sequence, number, is_called) overload and set is_called = false in conjunction with COALESCE(MAX + 1, 1) to ensure that, with an empty table, the next sequence value is 1 as expected.

Prerequisites

Install Cygwin with make, gcc & g++. Download Redis tar.gz package, unpack it.

Patch

Edit deps/hiredis/net.c and add the following lines just after the include directives:

How to automatically start ssh server on boot on Windows Subsystem for Linux

Microsoft partnered with Canonical to create Bash on Ubuntu on Windows, running through a technology called the Windows Subsystem for Linux. Below are instructions on how to set up the ssh server to run automatically at boot.

Edit the /etc/ssh/sshd_config file by running the command sudo vi /etc/ssh/sshd_config and do the following
1. Change Port to 2222 (or any other port above 1000)
2. Change PasswordAuthentication to yes. This can be changed back to no if ssh keys are setup.
Restart the ssh server:
- sudo service ssh --full-restart
With this setup, the ssh server must be turned on every time you run Bash on Ubuntu on Windows, as by default it is off. Use this command to turn it on:

Docker image to Virtualbox disk

https://stackoverflow.com/questions/23436613/how-can-i-convert-a-docker-image-into-a-vagrant-virtualbox-box by user blueskin (CC by-sa 3.0)

Find the size of the docker image from docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

All of Genymotion OVAs are listed here for download, ⛔️ but️ there is only one OVA for each API (They are listed in the end of this file 😌).

📱 Google Nexus One - 2.3.7 - API 10 - 480x800 261.9 MB

📱 Google Nexus S - 2.3.7 - API 10 - 480x800 261.9 MB

📱 Motorola Droid Razr - 2.3.7 - API 10 - 540x960 261.9 MB

	Connect to your Mac's localhost from within a VMWare virtual machine.

	- Boot up VMware and fire up your VM (i'm using Windows 7)
	- Make sure that the VM is using NAT
	- Fire up the command prompt in Windows and type "ipconfig". IN the resulting text look for your IPv4 address. It will be something like 192.168.xxx.xxx
	- Now go to your browser in your VM and type that ip address into the url bar but change the last set of digits to be 2 (or 1).
	- so as an example if your ip was found to be 192.168.213.200 change it to be 192.168.213.2
	- Assuming that your localhost is running on your mac you should get your localhost in your VM browser.
	- If you need to add a non standard port number on the end like 8090 go ahead and do so.

	the easiest way to use multiple constructors:

	<?php
	class A
	{
	function __construct()
	{
	$a = func_get_args();
	$i = func_num_args();
	if (method_exists($this,$f='__construct'.$i)) {

	class MyAdmin(admin.ModelAdmin):
	list_display = (..., 'actions_html')

	def actions_html(self, obj):
	return format_html('<button class="btn" type="button" onclick="activate_and_send_email({pk})">Activate and send email</button>', pk=obj.pk)

	actions_html.allow_tags = True
	actions_html.short_description = "Actions"


	# the IP(s) on which your node server is running. I chose port 3000.
	upstream app_geoforce {
	server 127.0.0.1:3000;
	}

	upstream app_pcodes{
	server 127.0.0.1:3001;
	}