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Ruby & Rails Ruby
Ruby File Functions, Streams
https://www.tutorialspoint.com/ruby/ruby_input_output.htm
https://blog.appsignal.com/2018/07/10/ruby-magic-slurping-and-streaming-files.html
https://www.rubyguides.com/2017/05/stringio-objects/
https://www.rubyguides.com/2019/05/ruby-tempfile/
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