Maurizio Del Corno druzn3k

Controller Filters

The Rails REST implementation dictates the default seven actions for your controllers, but frequently we want to share functionality across multiple actions or even across controllers. Controller filters are the easiest way to do that.

Before, After, and Around

There are three types of filters implemented in Rails:

a before_filter runs before the controller action
an after_filter runs after the controller action

Web

5 entertaining things you can find with the GitHub Search API

Let's have some command-line fun with curl, [jq][1], and the [new GitHub Search API][2].

Today we're looking for:

The hottest repositories created in the last week.
The oldest user accounts with zero followers. (So sad.)
Issue trends by language.
Clojure projects defying convention.

Client-side SSL

For excessively paranoid client authentication.

Using self-signed certificate.

Create a Certificate Authority root (which represents this server)

Organization & Common Name: Some human identifier for this server CA.

openssl genrsa -des3 -out ca.key 4096
openssl req -new -x509 -days 365 -key ca.key -out ca.crt

	#!/usr/bin/env ruby

	# This is my current blacklist when playing spotify in radio mode with "heavy metal".
	blacklist = ['Nickelback', 'Scorpions', 'Watain', 'Mayhem', 'Guns N\' Roses']

	# gem install ruby-dbus
	require "dbus"

	session_bus = DBus::SessionBus.instance

	Install GHC 7.6.3:
	- Download at: http://www.haskell.org/ghc/download_ghc_7_6_3
	- Extract and go in extract folder
	- in terminal use: ./configure
	if error:
	"checking for path to top of build tree... utils/ghc-pwd/dist/build/tmp/ghc-pwd: error while loading shared libraries: libgmp.so.3: cannot open shared object file: No such file or directory
	configure: error: cannot determine current directory"
	use:
	- in terminal: sudo apt-get install libgmp3c2
	- in terminal: sudo ln -s /usr/lib/x86_64-linux-gnu/libgmp.so.10.0.5 /usr/lib/libgmp.so.3

	#!/usr/bin/env ruby
	require "openssl"
	require 'digest/sha2'
	require 'base64'

	# We use the AES 256 bit cipher-block chaining symetric encryption
	alg = "AES-256-CBC"

	# We want a 256 bit key symetric key based on some passphrase
	digest = Digest::SHA256.new

	#!/usr/bin/python
	import ast, _ast, os

	for root, dirs, files in os.walk('.'):
	for name in files:
	if name.endswith('.py'):
	full = os.path.join(root, name)
	t = ast.parse(open(full).read())
	for n in ast.walk(t):
	if isinstance(n, _ast.Str) and not isinstance(n.s, unicode):

	package main

	import (
	"database/sql"
	"errors"
	"fmt"
	_ "github.com/bmizerany/pq"
	"os"
	"regexp"
	"strings"