Take the red pill

require 'matrix'

class Matrix

  def []=(row,col,value)
    @rows[row][col] = value
  end

  def include?(search_term)
    @rows.each do |row|
      return true if row.include?(search_term)
    end

    false
  end

  def to_float
    @rows.each do |row|
      row.each_index do |index|
        value = row.at(index)  
        row[index] = value.to_f if value.kind_of? Fixnum  
      end
    end
  end

  def to_int
    @rows.each do |row|
      row.each_index do |index|
        value = row.at(index)  
        row[index] = value.to_i if value.kind_of? Float 
      end
    end
  end

end