Ruby Cookbook

cookbook.md

CSVs

Generate a CSV

csv = CSV.generate(headers: true, force_quotes: true) do |row|
  row << ['ID', 'Name',  'Email']
  people.each do |person|
    row << [person.id, person.name, person.email]
  end
end
csv = "#{csv}" # Add BOM if people are going open this in Excel

File I/O

Write a string to a file

File.write('my_file.txt', 'Hello there!')