Simple to use :

• Read csv using headers to name symbols
• Parse table like each row is a hash where each column header is a symbol's name.
• do whatever you want with value.

Example :

require 'smarter_csv'                                                               

# Class CodePostaux                                                                 
class CodePostaux                                                                   
  attr_accessor :csv_file_path, :cp_hash                                            

  def initialize(csv_file_path)                                                     
    @csv_file_path = csv_file_path                                                  
    @cp_hash = Hash.new                                                             
  end                                                                               

  def read_csv                                                                      
    SmarterCSV.process(@csv_file_path, {col_sep: ';'})                              
  end                                                                               
end

output = File.open('./test/minitest/fixtures/code_postaux_provisioning.rb', 'w')    
codes_postaux.each do |value|                                                       
  output.write("PostCode.create(code: '#{value[:code_postal]} #{value[:nom_commune]}')\n")    
end                                                                                 
output.close

gem TVA

On github. Book about gem development.

A collection of awesome Ruby gems, tools, frameworks and software.
Excellent website to know what's updated, followed etc.

This gem implements a flexible time-ordered activity feeds commonly used within social networking applications. As events occur, they are pushed into the Feed and distributed to all users that need to see the event. Upon the user visiting their "feed page", a pre-populated ordered list of events is returned by the library.

Easy enough API to encrypt/decrypt.

Only works with ruby 2.2.2 for now.
Source is here : https://github.com/loureirorg/rb2exe
Also works with rails apparently.

I have not tested this gem. But it's worth mentioning it exists.
And yes... this is not a snippet

require 'tty'
require 'tty-prompt'

prompt = TTY::Prompt.new
answer = prompt.select("my question") do |item|
  item.choice  'One', 'Pika'
  item.choice  "Two", 'Boo'
end

puts "My answer was : #{answer}"

(with gem TTY)