Method: Matrix#+

Defined in:
lib/matrix.rb

#+(m) ⇒ Object

Matrix addition.

Matrix.scalar(2,5) + Matrix[[1,0], [-4,7]]
#  =>  6  0
#     -4 12

Raises:



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# File 'lib/matrix.rb', line 1093

def +(m)
  case m
  when Numeric
    raise ErrOperationNotDefined, ["+", self.class, m.class]
  when Vector
    m = self.class.column_vector(m)
  when Matrix
  else
    return apply_through_coercion(m, __method__)
  end

  raise ErrDimensionMismatch unless row_count == m.row_count && column_count == m.column_count

  rows = Array.new(row_count) {|i|
    Array.new(column_count) {|j|
      self[i, j] + m[i, j]
    }
  }
  new_matrix rows, column_count
end