Ahmed aonemd

Once upon a time there was a user that wanted to install firefox.

The user tried to do pacman -S firefox but it didn't work. The all mighty pacman reported that firefox-3.2.4-1.i686.pkg.tar.gz could not be found on his mirror. So the user tried pacman -Sy firefox. It worked and the user rejoiced since he could once again go and troll /h/.

But all was not good. The user had made a grave error!

See, when the user told the almighty pacman to -Sy firefox, pacman did

VirtualBox Host-Only Static IP

My typical setup for a development box in VirtualBox uses two NICs. The first uses NAT to allow the box to communicate with the outside world through my host computer’s network connection. (NAT is the default, so shouldn't require any setup.) The second is a "host-only" connection that allows my host and guest to interact.

To create a host-only connection in VirtualBox, start by opening the preferences in VirtualBox. Go to the "Network" tab, and addd a Host-only Network. Modify the host-only network, and disable DHCP. Make a note of the IP address. (Feel free to set the IP address as well, if you like.)

Next, assign this host-only adapter to the virtual machine. Select the VM and press "Settings". Go to the "Network" tab, and select "Adpater 2". Enable the adapter, set it to a "Host-only Adapter", and select the adpater you created above.

Temporary

IRC Reference

by xero updated 10.29.24

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

Promises, under the hood

Everyone knows that to create a new Promise, you need to define it this way:

  new Promise((resolve, reject) => {
    ...
    resolve(someValue)
  })

You pass a callback that defines the specific behavior of your promise.

	require "active_record"

	namespace :db do

	db_config = YAML::load(File.open('config/database.yml'))
	db_config_admin = db_config.merge({'database' => 'postgres', 'schema_search_path' => 'public'})

	desc "Create the database"
	task :create do
	ActiveRecord::Base.establish_connection(db_config_admin)

	# Call scopes directly from your URL params:
	#
	# @products = Product.filter(params.slice(:status, :location, :starts_with))
	module Filterable
	extend ActiveSupport::Concern

	module ClassMethods

	# Call the class methods with names based on the keys in <tt>filtering_params</tt>
	# with their associated values. For example, "{ status: 'delayed' }" would call

	class Integer
	N_BYTES = [42].pack('i').size
	N_BITS = N_BYTES * 16
	MAX = 2 ** (N_BITS - 2) - 1
	MIN = -MAX - 1
	end

	p Integer::MAX #=> 4611686018427387903
	p Integer::MAX.class #=> Fixnum
	p (Integer::MAX + 1).class #=> Bignum

	package main

	import (
	"bytes"
	"code.google.com/p/go.crypto/openpgp"
	"encoding/base64"
	"io/ioutil"
	"log"
	"os"
	)

	default-cache-ttl 28800
	# 8 hours
	pinentry-program /usr/bin/pinentry-curses
	allow-loopback-pinentry