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Editorial Team
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Asked: 2026-06-02T03:29:19+00:00

Before I ask a question, I like to caution everyone that I am a

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Before I ask a question, I like to caution everyone that I am a programming newbie, so please correct me if I ask something ridiculous.

I have been reading about Ruby having open classes, i.e a method can be added. However, I am trying to get a few examples of how Rails might have added to existing Ruby classes.

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  1. Editorial Team

    I have found that a great example is Time

    From a rails application

    Time. 

    Loading development environment (Rails 3.2.3)
1.9.3p125 :001 > Time.
Display all 252 possibilities? (y or n)
                                           Time.module_exec
Time.__delay__                             Time.mongo_thread_local_accessor
Time.__id__                                Time.name
...

Total = 252

    From a plain ruby console (IRB)

    $ irb
1.9.3p125 :001 > Time.
                                 Time.hash                        Time.private_method_defined?
Time.__id__                      Time.include?                    Time.private_methods
Time.__send__                    Time.included_modules            Time.protected_instance_methods
...

Total = 93
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