salaries.rb

def salaries_by_lang(salaries, lang)
  salaries.find_all{|x| x[:in_what_technologies_are_you_proficient?] =~ /#{lang}/}
end

# company_type can be for example: multinational, outside, exclusively
def salaries_by_company_type(salaries, company_type)
  salaries.find_all{|x| x[:"referring_to_the_company_or_project_that_you_work_for_most_of_the_time:"] =~ /#{company_type}/}
end

def group_by_salary(collection)
  collection.group_by{|x| x[:"excluding_equity,_how_much_money_do_you_earn_on_a_monthly_basis?"]}
end

def print_groups_count(groups)
  groups.each{|k,v| puts "#{k}: #{v.count}"}
end

def print_salary_info(salaries, title)
  puts "========================="
  puts "#{title} salaries"
  puts "Total: #{salaries.size}"
  groups = group_by_salary(salaries)
  print_groups_count(groups)
end


salaries = SmarterCSV.process('salary_survey_colombians_2015.csv')
salaries_for_lang = salaries_by_lang(salaries, "Ruby")
puts "Total salaries: #{salaries_for_lang.size}"

multinational_salaries = salaries_by_company_type(salaries_for_lang, "multinational")
outside_salaries = salaries_by_company_type(salaries_for_lang, "outside")
colombia_salaries = salaries_by_company_type(salaries_for_lang, "exclusively")

print_salary_info(colombia_salaries, "Colombia")
print_salary_info(multinational_salaries, "Multinational")
print_salary_info(outside_salaries, "Outside")