Did you know that you can use Bundler without Gemfile?
Did you know that you can use Bundler inside single Ruby script (without Gemfile) and automatically install required dependencies for it?
# example.rb
require 'bundler/inline'
gemfile do
source 'https://rubygems.org'
gem 'rest-client'
gem 'nokogiri'
end
###
body = RestClient.get("https://www.reddit.com/r/ruby/").body
puts "Posts from r/ruby front page:"
Nokogiri::HTML(body).xpath("//div[contains(@class, 'scrollerItem')]//h2").each do |h2|
puts h2.text.strip
end