instance method Matrix#each_with_index
each_with_index {|e, row, col| ... } -> self
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[TODO]
Yields all elements of the matrix, starting with those of the first row, along with the row index and column index, or returns an Enumerator is no block given
Matrix[ [1,2], [3,4] ].each_with_index do |e, row, col| puts "#{e} at #{row}, #{col}" end # => 1 at 0, 0 # => 2 at 0, 1 # => 3 at 1, 0 # => 4 at 1, 1
class Matrix