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ruby array chop

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  1. # for creating sets of data for tables generally. it enables you to
  2. # take an array and create sections with it.
  3. #
  4. # a = [1,2,3,4,5,6,7,8,9,10]
  5. # b = array_chop(a,3)
  6. # b.inspect
  7. # "[[1, 2, 3], [4, 5, 6], [7, 8, 9], [10]]"
  8.  
  9. def array_chop( data, num )
  10.   res = Array.new
  11.   buf = data.to_a.reverse
  12.   ( data.size / num ).times do |row|
  13.     tmp = Array.new
  14.     num.times do |col|
  15.       tmp << buf.pop
  16.     end
  17.     res << tmp
  18.   end
  19.   res << buf unless buf.size == 0
  20.   res
  21. end

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