siaw23-retired

COUNTRY_LETTERS = 'A'.upto('Z').each.with_index(127462).to_h.freeze

def country_emoji(iso)
  COUNTRY_LETTERS.values_at(*iso.chars).pack('U*')
end

country_emoji('GB')
#=> "🇬🇧"

siaw23-retired

require_relative 'tuple_space'

class Cache
  def initialize
    @memory = TupleSpace.new(reaper_period_in_secs: 10, expires_in_secs: 60)
  end

  def get(request)
    @memory[request]
  end

siaw23-retired

require_relative 'tuple_space'

class Cache
  def initialize
    @memory = TupleSpace.new(reaper_period_in_secs: 10, expires_in_secs: 60)
  end

  def get(request)
    @memory[request]
  end

siaw23-retired

Ruby Book List

Learning Ruby

You're taking your first steps into Ruby

The Well Grounded Rubyist

A good introduction to programming in general. Easy on newer programmers.

siaw23-retired

MySQL

Getting started:

• http://www.sqlteaching.com/
• https://www.codecademy.com/courses/learn-sql

Related tutorials:

• MySQL-CLI
• Analyzing Business Metrics