by xero updated 10.29.24
package main | |
import ( | |
"bytes" | |
"code.google.com/p/go.crypto/openpgp" | |
"encoding/base64" | |
"io/ioutil" | |
"log" | |
"os" | |
) |
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 |
# 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 |
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) |
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.
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
module ActiveRecord::UnionScope | |
def self.included(base) | |
base.send :extend, ClassMethods | |
end | |
module ClassMethods | |
def union_scope(*scopes) | |
id_column = "#{table_name}.#{primary_key}" | |
sub_query = scopes.map { |s| s.select(id_column).to_sql }.join(" UNION ") | |
where "#{id_column} IN (#{sub_query})" |
Locate the section for your github remote in the .git/config
file. It looks like this:
[remote "origin"]
fetch = +refs/heads/*:refs/remotes/origin/*
url = [email protected]:joyent/node.git
Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/*
to this section. Obviously, change the github url to match your project's URL. It ends up looking like this: