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SCRATCH_REPO=http://inecas.fedorapeople.org/dynflow-scratch/

# Install Katello as usual + following commands before katello-intaller

yum install -y\
  $SCRATCH_REPO/ruby193-rubygem-algebrick-0.4.0-2.el6.noarch.rpm\
  $SCRATCH_REPO/ruby193-rubygem-apipie-params-0.0.3-1.el6.noarch.rpm\
  $SCRATCH_REPO/ruby193-rubygem-dynflow-0.2.0-1.git.0.03c40d9.el6.noarch.rpm\
  $SCRATCH_REPO/ruby193-rubygem-foreman-tasks-0.1.3-1.el6.noarch.rpm

iNecas

require 'zeus/rails'

class CustomPlan < Zeus::Rails

  # def my_custom_command
  #  # see https://github.com/burke/zeus/blob/master/docs/ruby/modifying.md
  # end
  def test_environment
    require 'minitest/unit'
    MiniTest::Unit.class_variable_set("@@installed_at_exit", true)

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gem 'zeus'

iNecas

class Hell
  attr_accessor :temperature
end

hell = Hell.new
hell.temperature = 100
hell.freeze
hell.temperature = 0

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Vagrant.configure("2") do |config|
  config.vm.define "my-db-fedora" do |vm|
    vm.box = "chef/fedora-21"
    vm.provision "ansible" do
      ansible.groups = { 'ha' => 'my-ha-fedora' }
      ansible.playbook = "my-db.yml"
    end
  end
 
  config.vm.define "my-ha-fedora" do |vm|

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# getting first item of array or empty hash, when empty:

# A) Without documentation:
	def get_first_item_from_array(array)
		unless array.blank?
			array.each do |single|
				return single
			end
		end
		return {}

iNecas

# wrong
["9.13.3", "9.3.2", "10.1.1", "9.3.5"].sort 
# => ["10.1.1", "9.13.3", "9.3.2", "9.3.5"]

# right
["9.13.3", "9.3.2", "10.1.1", "9.3.5"].sort_by{|version| version.scan(/\d+/).map(&:to_i)}
# => ["9.3.2", "9.3.5", "9.13.3", "10.1.1"] 

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hash = Hash.new("")              # => {}
hash[1] << "Hello"               # => "Hello"
hash[2]                          # => "Hello"
hash = Hash.new{|h,k| h[k] = ""} # => {}
hash[1] << "Hello"               # => "Hello"
hash[2]                          # => ""

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pscs = {
   ["Brno", "Hradecká"] => [61200,62100],
   ["Brno", "Merhautova"] => [61300,61400],
   ["Brno", "Nezamyslova"] => [61500,63600],
}

pscs.each do |(city, street), street_pscs|
  puts "#{street} in #{city} has following PSCs: #{street_pscs.join(", ")}"
end

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string = "<div>ruby</div><div>string</div><div>methods</div>"

# == splitting with regexp

string.split(/<.*?>/) 
# => ["", "ruby", "", "string", "", "methods"]

# == and keeping separator in the result

string.split(/(<.*?>)/)