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How to use Bundler in a single-file Ruby script

To use Bundler in a single-file script, add require 'bundler/inline' at the top of your Ruby file. Then, use the gemfile method to declare any gem sources and gems that you need. Here’s an example:

require 'bundler/inline'

gemfile do
 	  source ''
 	  gem 'json', require: false
  	  gem 'nap', require: 'rest'
  	  gem 'cocoapods', '~> 0.34.1'

puts 'Gems installed and loaded!'
puts "The nap gem is at version #{Nap::VERSION}"

To run this script, including installing any missing gems, save the script into a file (for example, bundler_inline_example.rb) and then run the file with the command ruby bundler_inline_example.rb.

Running the script will automatically install any missing gems, require the gems you listed, and then run your code.