From: 7stud -- <bbxx789_05ss@...>
Date: 2009-04-30T17:37:42+09:00
Subject: Re: Advanced array merging

Jack Bauer wrote:
> Hi everyone,
> 
> I'm looking for the fastest way (or the version with the least code!) to
> consolidate a couple of arrays.
> 

Those two requirements are often at odds with each other.  For instance, 
"inject" and "fastest" should not be used in the same sentence.

result = []

arr.each do |sub_arr|
  counter_total = 0

  sub_arr.each do |obj|
    counter_total += obj.counter
  end

  sub_arr[0].counter = counter_total
  result << sub_arr[0]   #or result << [sub_arr[0]]
end


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