Question

正在进行数据迁移/过滤项目，我不得不根据自身检查对象数组（所有对象都具有相同的架构）。

我有一种直觉，认为这段代码实际上并没有获取所有重复项，而我为数组建立索引的方式却导致某些内容完全被遗漏了。

这是我的原始代码：

 const dedupeAdnsfCustomers = (adnsflist, listName) => {
    let newList = [];
    let filtered;
    for (let index = 0; index < adnsflist.length; index++) {
      filtered = adnsflist.filter(
        x => x.CustomerID === adnsflist[index].CustomerID
      );
      if (filtered.length > 1) {
        filtered.forEach(f => {
          newList.push(f);
          adnsflist.splice(adnsflist.indexOf(f), 1);
        });
      }
    }
    //following block was due to it appearing that it would 
    //remove all of the items from the original array...
    //adding back only one ??
    if (newList.length > 0) {
      for (let index = 0; index < newList.length; ) {
        filtered = newList.filter(
          x => x.CustomerId === newList[index].CustomerId
        );
        adnsflist.unshift(filtered[0]);
        index = index + filtered.length;
      }
    }
    console.log(newList);
    console.log(adnsflist);
    return { originalList: adnsflist, internalDupes: newList, tag: listName };
  };

我认为需要这样重写：

const dedupeAdnsfCustomers = (adnsflist, listName) => {
    let newList = [];
    let filtered;
    adnsflist.forEach(adnsfItem => {
        filtered = adnsflist.filter(x => x.CustomerID === adnsfItem.CustomerID);
        if(filtered.length>0){
            filtered.forEach(f => {
                newList.push(f);
                adnsflist.splice(adnsflist.indexOf(f), 1);
            });
         }
    }
    return {originalList: adnsflist, internalDupes: newList, tag: list};
});

只保留其中一个，并复制所有副本吗？

拉出重复操作。仍然有一些重复

0 个答案: