a method # that walks an array in groups, pass a block to call the block on each sub array
# File lib/mcollective/monkey_patches.rb, line 29 def in_groups_of(chunk_size, padded_with=nil, &block) arr = self.clone # how many to add padding = chunk_size - (arr.size % chunk_size) # pad at the end arr.concat([padded_with] * padding) unless padding == chunk_size # how many chunks we'll make count = arr.size / chunk_size # make that many arrays result = [] count.times {|s| result << arr[s * chunk_size, chunk_size]} if block_given? result.each_with_index do |a, i| case block.arity when 1 yield(a) when 2 yield(a, (i == result.size - 1)) else raise "Expected 1 or 2 arguments, got #{block.arity}" end end else result end end