Having an OrderedHash that saves insertion order is useful enough and I personally don't see a reason for a custom ordered hash. Wouldn't it be less expensive to order only the keys in a separate array and access the hash rather than creating a new hash?
My 2 cents. -- @gautamrege ~~~~~~~~~~~~~~~ All wiyht. Rho sritched mg kegtops awound? On 24-Feb-2014, at 8:58 pm, Artem Kalinchuk <[email protected]> wrote: > Would a custom order of a hash be useful in Rails? > > If I have the following Hash: > > my_hash = { key1: 'value', key2: 'value', key3: 'value' } > > And I want to order it by the following keys: > > my_hash = my_hash.order(:key2, :key1, :key3) > > I would get a new hash with the following result: > > puts my_hash > => { key2: 'value', key1: 'value', key3: 'value' } > > Using the following code: > > class Hash > def order(*keys) > Hash[keys.collect {|k| self[k] ? [k, self[k]] : nil }.compact] > end > end > > Any thoughts? > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rubyonrails-talk/285cec00-c279-405b-982e-0710501bcb68%40googlegroups.com. > 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 unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/AE2882EE-E9F3-45F2-B036-493DA2EC9E8A%40gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
