Maciej Olko m-aciek

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.

Resize a Hard Disk for a Virtual Machine

Our Virtual Machines are provisioned using Vagrant from a Linux base box to run using VirutalBox. If the Hard Disk space runs out and you cannot remove files to free-up space, you can resize the Hard Disk using some VirtualBox and Linux commands.

Some assumptions

The following steps assume you've got a set-up like mine, where:

	#!/usr/bin/env python3
	from decimal import Decimal
	import re

	import yaml
	from yaml.composer import Composer
	from yaml.constructor import SafeConstructor
	from yaml.parser import Parser
	from yaml.reader import Reader
	from yaml.resolver import BaseResolver, Resolver as DefaultResolver

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

	#!/bin/bash -e
	####
	# Helper script to update the Last modified timestamp of files in a Git SCM
	# Projects working Copy
	#
	# When you clone a Git repository, it sets the timestamp of all the files to the
	# time when you cloned the repository.
	#
	# This becomes a problem when you want the cloned repository, which is part of a
	# Web application have a proper cacheing mechanism so that it can re-cache files

	!function() {
	var doc = document,
	htm = doc.documentElement,
	lct = null, // last click target
	nearest = function(elm, tag) {
	while (elm && elm.nodeName != tag) {
	elm = elm.parentNode;
	}
	return elm;
	};