Ruby Matrix Addition

Dec 14, 2011 | News |

Short and sweet matrix addition lambda in Ruby (1.9+).

#!/usr/bin/env ruby

matrix_addition = ->(m1, m2) do
  m1.flat_map{|m|m}.zip(m2.flat_map{|m|m}).map{|v|v.inject(:+)}.each_slice(m1[0].length).map{|r|r}
end

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