Ruby 将对象作为参数传递

我有以下方法太长了：

def combine_atoms
  @left.each do |chemical|
    chemical.chem_species.each do |atom|
      if @left_total[atom[0]].nil?
        @left_total[atom[0]] = atom[1]
      else
        @left_total[atom[0]] += atom[1]
      end
    end
  end

  @right.each do |chemical|
    chemical.chem_species.each do |atom|
      if @right_total[atom[0]].nil?
        @right_total[atom[0]] = atom[1]
      else
        @right_total[atom[0]] += atom[1]
      end
    end
  end
end

---

如何将

@left

和

@left\u total

作为参数传递，以使用ruby将代码行数减少一半？

您可以将

combine\u atoms

方法中的循环分离为具有以下参数的新循环：

def combine_atoms
  @left_total = combine_part(@left, @left_total)
  @right_total = combine_part(@right, @right_total)
end

def combine_part(part, total)
  part.each do |chemical|
    chemical.chem_species.each do |atom|
      if total[atom[0]].nil?
        total[atom[0]] = atom[1]
      else
        total[atom[0]] += atom[1]
      end
    end
  end
end