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joshuamiller/gist:579234

Created September 14, 2010 15:40
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gistfile1.rb
[[], [["a", "b", "c"], ["d", "e", "f"]], [["g", "h", "i"]]]
#=>
[["a", "b", "c"], ["d", "e", "f"], ["g", "h", "i"]]
#=> via
array.reject(&:empty?).inject([]) {|acc, array| array.each {|entry| acc << entry}; acc}
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