什麼是臭代碼

  mHeroInfoUI.Herorder.Clear();
   List<HeroInfo> heroList = new List<HeroInfo>(); //heroList = HeroDataManager.Instance.GetHeroListBySort(selectHero, classify, toggle); heroList = HeroDataManager.Instance.GetNewHeroSort(classify, toggle);

if (itemPool.Count != 0)
            for (int i = 0; i < itemPool.Count; i++)
                itemPool[i].SetActive(false);

        if ( heroList == null || heroList.Count <= 0) //meiyou 
        {
            if(itemPool.Count!=0)
                for(int i=0;i<itemPool.Count;i++)
                    itemPool[i].SetActive(false);
            return;
        }
        int r = heroList.Count/ 5; //行
        int h = heroList.Count % 5;//餘數

        if (h != 0 && r != 0)
            r = r + 1;
        if(r==0)
        {
            r=1; 
        }

        for (int i = 0; i < r; i++)
        {
            if (i > itemPool.Count-1) 
            {
               itemPool.Add(GameObject.Instantiate(prefab) as GameObject);
            } 

            Transform row = itemPool[i].transform;
            row.parent = heroItemParent.transform;
            row.localPosition = new Vector3(0, 220-i * (192), 0);
            row.localScale = Vector3.one;
            row.localEulerAngles = Vector3.zero;
            row.gameObject.SetActive(true);//prefab池 的一個元素激活

            for(int j=0;j<5;j++)
            {
                if (h != 0&&i==r-1) //最後一行
                {
                    if (j > h - 1)
                    {
                        row.GetChild(j).gameObject.SetActive(false); //一個行prefab 裏面5個元素有多餘的 隱藏
                        continue;
                    }
                }
                // heroList[i * 5 + j] 是第幾個heroinfo
                InitAHeroItems(row.GetChild(j).gameObject, heroList[i * 5 + j], i * 5 + j);
               mHeroInfoUI.Herorder.Add(i * 5 + j, heroList[i * 5 + j].heroID);
            }
        } 
        if (r < itemPool.Count - 1) //初始化完成後 隱藏池中多餘的
        {
            for (int b = r + 1; b < itemPool.Count; b++)
            {
                itemPool[b].SetActive(false);
            }
        }
             

精簡後的

        mHeroInfoUI.Herorder.Clear();
        List<HeroInfo> heroList = new List<HeroInfo>();
        //heroList = HeroDataManager.Instance.GetHeroListBySort(selectHero, classify, toggle);
        heroList = HeroDataManager.Instance.GetNewHeroSort(classify, toggle);

        #region newLogic
        CreateGridTools<HeroInfo> createGridTools = new CreateGridTools<HeroInfo>();
        createGridTools.InitData(heroItemParent, Item, heroList, InitAHeroItems);