On 3 June 2011 19:30, Valery Kvon <adda...@gmail.com> wrote:
> Try pass the block:
>
> (array1 + array2 + arrayN].uniq { |instance| [instance.user_id,
> instance.address_id]}
>
> undocumented feature
nice.
Or if you only want those two fields:
(array1 + array2 + arrayN).map{|instance| [instance.user_id,
instance.address_id]}.uniq
(unless that's *exactly* the same thing ;-)
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