acuppy

" shortcuts
inoremap jk <Esc>

:hi CursorLine   cterm=NONE ctermbg=darkred ctermfg=white guibg=darkred guifg=white
:hi CursorColumn cterm=NONE ctermbg=darkred ctermfg=white guibg=darkred guifg=white
:nnoremap <Leader>c :set cursorline! cursorcolumn!<CR>
autocmd BufWritePre * :%s/\s\+$//e

" close buffer
nmap <leader>d :bp<bar>sp<bar>bn<bar>bd<CR>

acuppy

require "ostruct"

class Arguments
  def initialize(arguments)
    @whiny     = arguments.delete(:whiny) || false
    @arguments = arguments
    @delegee   = OpenStruct.new(@arguments)
  end

  def method_missing(method, *args)

acuppy

Scenario: you're pulling all User records that do not have any associated Activities. In Rails you may find yourself doing something like this...

User.all.select { |user| user.activities.blank? }

Pretty simple to implement, but a performance hog: Rails will load a new ActiveRecord Object for each User, then call for all activities related to the user; simply to determine, which do and don't have any Activites: bad idea.

We can achieve the same result with a fraction of the overhead, using LEFT OUTER JOIN.

acuppy

#!/bin/sh

# Credits to:
#  - http://vstone.eu/reducing-vagrant-box-size/
#  - https://github.com/mitchellh/vagrant/issues/343

sudo su

aptitude -y purge ri
aptitude -y purge installation-report landscape-common wireless-tools wpasupplicant ubuntu-serverguide

acuppy

#!/usr/bin/env bash

cd ~
sudo apt-get update
sudo apt-get install curl wget

# install ruby
curl -sSL https://get.rvm.io | bash -s stable --ruby="2.0.0-p353"

# install imagemagick

acuppy

cd ~
sudo apt-get update
sudo apt-get install openjdk-7-jre-headless -y

### Check http://www.elasticsearch.org/download/ for latest version of ElasticSearch and replace wget link below

# NEW WAY / EASY WAY
wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-1.1.1.deb
sudo dpkg -i elasticsearch-1.1.1.deb

acuppy

class Hash
  def compact(opts={})
    inject({}) do |new_hash, (k,v)|
      if !v.nil?
        new_hash[k] = opts[:recurse] && v.class == Hash ? v.compact(opts) : v
      end
      new_hash
    end
  end
end

acuppy

Setup Rails

1. cd /vagrant
2. sudo gem install bundler --no-ri --no-rdoc
3. \curl -L https://get.rvm.io | bash -s stable --ruby
4. bundle

Postgres 9.3 onto Ubuntu 12.04

1. sudo apt-get update

acuppy

module RangeScopes
  extend ActiveSupport::Concern
  
  module ClassMethods
     
    # Order.between(1..5) => pulls all orders who's ids are between 1 and 4
    # Order.between(:customer_id, 1..4) => pulls all orders who's orders.customer_id is between 1 and 4
    def between(*args)
      column = args.first.is_a?(Symbol) ? args.shift : :id
      range  = args.first

acuppy

class Object
  def true?
    self.respond_to?( :to_i ) ? !self.to_i.zero? : true
  end

  def false?
    !true?
  end
end