On 25 March 2010 14:47, Adrien Coquio <[email protected]> wrote: > In fact the previous example doesn't change the value of > PeopleHelpers::MYCONSTANT > > but if I do : > <% > joke = PeopleHelpers::MYCONSTANT.dup > joke[:opt][:title].sub!('a','b') > #if i debug there, PeopleHelpers::MYCONSTANT = {:opt => {:title => > bbcdef}} > %> > > the value changed.. why ? >
My understanding is that dup makes a copy of the hash contents, but since the contents are themselves references rather than simple objects you end up with a new hash containing references to the same objects, which can then be modified as you have noted (even though they are notionally constant). Colin -- 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
