Discussion on: CSV Challenge

require "json"
require "open-uri"
url = "https://gist.githubusercontent.com/jorinvo/7f19ce95a9a842956358/raw/e319340c2f6691f9cc8d8cc57ed532b5093e3619/data.json"
data = JSON.parse(open(url).read)

filtered_data = data.select { |line| not line["creditcard"].nil? }
file = File.open(DateTime.now.strftime("%Y%m%d") + ".csv", 'w')
file.write "Name,Creditcart\n"
filtered_data.each do |line|
    file.write [line["name"], line["creditcard"]].join(',')
    file.write("\n")
end

require "json"
require "open-uri"
File.open(DateTime.now.strftime("%Y%m%d") + ".csv", 'w') { |file| file.write "Name,Creditcard\n"; JSON.parse(open("https://gist.githubusercontent.com/jorinvo/7f19ce95a9a842956358/raw/e319340c2f6691f9cc8d8cc57ed532b5093e3619/data.json").read).select { |line| not line["creditcard"].nil? }.each { |line| file.write "#{line['name']},#{line['creditcard']}\n" } }