ruby-ftw:Ruby编程语言的演示

# Timeless A time handling package to showcase the beauty of [Ruby](https://ruby-lang.org). ## Usage The package extends integers by time duration methods that allow easy to use time calculations. ```ruby require 'timeless' puts (5.days + 5.hours + 5.minutes).from_now # Time<2021, ...> ``` ## Development ```sh $ bundle install # install dependencies $ bundle exec ruby tests/ # run testsuite $ bundle exec ruby example.rb # run the final example $ bundle exec irb -r './timeless' # interactive ruby shell ``` ## Sidenotes and Further Readings The example in this presentation is heavily inspired by [rails active support time] handling. When testing with time it's a good practice to freeze time! If you do not, a timestamp might be off milliseconds within your test and randomly fail if it belongs to a differen "second" breaking an equality assertions. Use [timecop] or check [rails testing time helpers]. Additionally you can rely on your static knowledge rather than doing dynamic calculation in your testsuite. Just think of an age validator that ensures a person is of 18 years or more. [timecop]: https://github.com/travisjeffery/timecop "A gem providing time travel and freezing" [rails testing time helpers]: https://api.rubyonrails.org/classes/ActiveSupport/Testing/TimeHelpers.html [rails active support time]: https://github.com/rails/rails/blob/main/activesupport/lib/active_support/duration.rb