prusswan

Why?

There is a long standing issue in Ruby where the net/http library by default does not check the validity of an SSL certificate during a TLS handshake. Rather than deal with the underlying problem (a missing certificate authority, a self-signed certificate, etc.) one tends to see bad hacks everywhere. This can lead to problems down the road.

From what I can see the OpenSSL library that Rails Installer delivers has no certificate authorities defined. So, let's go fetch some from the curl website. And since this is for ruby, why don't we download and install the file with a ruby script?

Installation

The Ruby Way! (Fun)

The difference between XYZ and TMS tiles and how to convert between them

Lots of tile-based maps use either the XYZ or TMS scheme. These are the maps that have tiles ending in /0/0/0.png or something. Sometimes if it's a script, it'll look like &z=0&y=0&x=0 instead. Anyway, these are usually maps in Spherical Mercator.

Good examples are OpenStreetMap, Google Maps, MapBox, MapQuest, etc. Lots of maps.

Most of those are in XYZ. The best documentation for that is slippy map tilenames on the OSM Wiki, and Klokan's Tiles a la Google.

Viewing IPython notebooks in GitLab

GitLab is open source software to collaborate on code (a GitHub clone to run on your own server). Clicking a blob (a file in a repository) in GitLab shows a nice rendering if GitLab supports the file type (e.g., images, Markdown documents), or its content as plain text otherwise. The patch described here adds support to GitLab for rendering IPython notebooks (.ipynb files).

RVM to rbenv

Why? @sstephenson explains it best here.

1) remove RVM from your system

This should get rid of the rvm dir and any installed rubies:

$ rvm implode

	# In your test_helper.rb
	class ActiveRecord::Base
	mattr_accessor :shared_connection
	@@shared_connection = nil

	def self.connection
	@@shared_connection \|\| retrieve_connection
	end
	end

	# Install with:
	# bash < <(curl -L https://raw.github.com/gist/2435951)
	#
	# Reference: http://blog.wyeworks.com/2011/11/1/ruby-1-9-3-and-ruby-debug

	echo "Installing ruby-debug with ruby-1.9.3-p194 ..."

	curl -OL http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
	curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem

	# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
	# We use latest stable nginx with fresh openssl, zlib and pcre dependencies.
	# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
	#
	# Deployment structure
	#
	# SERVER:
	# /etc/init.d/nginx (1. nginx)
	# /home/app/public_html/app_production/current (Capistrano directory)
	#

	# Rails 2, 3, 4, and Hanami console
	function rc {
	if [ -e "./script/console" ]; then
	./script/console $@
	elif [ -e "./bin/rails" ]; then
	./bin/rails console $@
	elif [ -e "./apps" ]; then
	hanami console $@
	else
	script/rails console $@

	'''List loaded modules and packages, and show their version numbers
	and/or Git repository's HEAD commit SHA.

	'''
	# Standard library modules
	import types

	# Third-party packages
	import git # GitPython

	# Add this to config/environments/development.rb
	# Limit your development log file to 5 MB
	config.logger = Logger.new(config.paths["log"].first, 1, 5242880) # 5 megabytes