Lucas D'Avila lucasdavila

## merge_itself_with_simbolized_keys.rb
hash = {'a' => 1, 'b' => 2}
# => {"a"=>1, "b"=>2}

hash.merge hash.symbolize_keys
# => {"a"=>1, "b"=>2, :a=>1, :b=>2}

hash.to_json
# => "{\"a\":1,\"b\":2}"

hash[:a]  = 3

## 1_ubuntu_terminal_command
# to execute this gist, run the line bellow in terminal
\curl -L https://raw.github.com/gist/3875946/install_source_code_pro.sh | sh

## nested_attributes_pt-BR.yml
'pt-BR':
  activerecord:

    attributes:
      student:
        name: 'Nome'
        student_users: 'Usuários'
        # ...

      student/student_users:

## configuring_ubuntu_audio.sh
sudo apt-get install pavucontrol; pavucontrol &;
echo "Go to configuration tab and select the correct profile"

## simple_pg_query_for_multitenant_dbs.sh
sql="select 1"

for tenant_name in tenant_1 tenant_2 tenant_3 tenant_4
do
  psql -d $tenant_name -c "$sql"
done

## dynamic_form_for_hstore_attributes_in_rails.html.erb
<%= simple_form_for @product do |f| %>
  <%= f.simple_fields_for :attributes do |d| %>

    <% f.object.attributes.try(:each) do |key, value| %>
      <%= d.input key, :input_html => {:value => value } %>
    <% end %>

  <% end %>
<% end %>

## 1_parent.rb
$jruby_bin       = '/path/to/jruby/bin/jruby'
$children_script = File.join File.expand_path('.'), 'children.rb'

def call_children command = ''
  full_command = "#{$jruby_bin} -r#{$children_script} -e '#{command}'"
  puts "Executing command: #{full_command}"
  system full_command
end

puts "Hello from parent!"

## 1_without_factory_pattern.java
// example from book "Head First Design Patterns".

// without factory pattern
public class PizzaStore {

	public Pizza orderPizza(String type) {
		Pizza pizza;

                // bad! we have a lot of ifs here...
		if (type.equals("cheese")) {

## run_sandbox.sh
# enable security manager checks
export VERIFY_JRUBY="yes"

jruby sandbox.rb

## sort_array_by_key.php
<?php

// util function to be used by sortArrayByKey function
function _arraySorterByKey($key, $array, $otherArray) {
  $a = $array[$key];
  $b = $otherArray[$key];

  if ($a == $b)
      return 0;
	hash = {'a' => 1, 'b' => 2}
	# => {"a"=>1, "b"=>2}

	hash.merge hash.symbolize_keys
	# => {"a"=>1, "b"=>2, :a=>1, :b=>2}

	hash.to_json
	# => "{\"a\":1,\"b\":2}"

	hash[:a] = 3
	# to execute this gist, run the line bellow in terminal
	\curl -L https://raw.github.com/gist/3875946/install_source_code_pro.sh \| sh
	'pt-BR':
	activerecord:

	attributes:
	student:
	name: 'Nome'
	student_users: 'Usuários'
	# ...

	student/student_users:
	sudo apt-get install pavucontrol; pavucontrol &;
	echo "Go to configuration tab and select the correct profile"
	sql="select 1"

	for tenant_name in tenant_1 tenant_2 tenant_3 tenant_4
	do
	psql -d $tenant_name -c "$sql"
	done
	<%= simple_form_for @product do \|f\| %>
	<%= f.simple_fields_for :attributes do \|d\| %>

	<% f.object.attributes.try(:each) do \|key, value\| %>
	<%= d.input key, :input_html => {:value => value } %>
	<% end %>

	<% end %>
	<% end %>
	$jruby_bin = '/path/to/jruby/bin/jruby'
	$children_script = File.join File.expand_path('.'), 'children.rb'

	def call_children command = ''
	full_command = "#{$jruby_bin} -r#{$children_script} -e '#{command}'"
	puts "Executing command: #{full_command}"
	system full_command
	end

	puts "Hello from parent!"
	// example from book "Head First Design Patterns".

	// without factory pattern
	public class PizzaStore {

	public Pizza orderPizza(String type) {
	Pizza pizza;

	// bad! we have a lot of ifs here...
	if (type.equals("cheese")) {
	# enable security manager checks
	export VERIFY_JRUBY="yes"

	jruby sandbox.rb
	<?php

	// util function to be used by sortArrayByKey function
	function _arraySorterByKey($key, $array, $otherArray) {
	$a = $array[$key];
	$b = $otherArray[$key];

	if ($a == $b)
	return 0;