As far as i know, ruby use memory location to generate object's id, normally any dynamic objects(runtime generate objects) will have different object_id, for example "foo".object_id not equal with "foo".object_id. But, any object like number, true, false ,nil and symbol all have fixed object_id
-- rubyonrailsx Sent with Sparrow (http://www.sparrowmailapp.com/?sig) On Wednesday, September 19, 2012 at 1:23 AM, roelof wrote: > Hello, > > Im trying to learn ruby by using koans. > > Now I have to fill in this part. > > def test_some_system_objects_always_have_the_same_id > assert_equal --, false.object_id > assert_equal --, true.object_id > assert_equal --, nil.object_id > end > > According to the answers I have to fill in like this : > > def test_some_system_objects_always_have_the_same_id > assert_equal 0, false.object_id > assert_equal 2, true.object_id > assert_equal 4, nil.object_id > end > > But how can I normally know the id of a object ? > > Roelof > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk@googlegroups.com > (mailto:rubyonrails-talk@googlegroups.com). > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscr...@googlegroups.com > (mailto:rubyonrails-talk+unsubscr...@googlegroups.com). > To view this discussion on the web visit > https://groups.google.com/d/msg/rubyonrails-talk/-/ym3Iw2DuGgcJ. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
