如何避免新闻 api 中的重复标题？

Question

我正在使用一个新闻 api，我经常在其中获得许多重复的标题。如何调整我的代码以避免这种情况？

final response = await http.get(url);

    final jsonData = jsonDecode(response.body);

    if (jsonData[Strings.status] == Strings.ok) {
      jsonData[Strings.articles].forEach((element) {
        if (element[Strings.urlToImg] != null &&
            element[SharedStrings.description] != null) {
          ArticleModel articleModel = ArticleModel(
            title: element[SharedStrings.title],
            author: element[Strings.author],
            description: element[SharedStrings.description],
            url: element[Strings.urlText],
            urlToImage: element[Strings.urlToImg],
            content: element[Strings.content], //context
          );
          news.add(articleModel);

getNews() async {
    News newsClass = News();
    await newsClass.getNews();
    articles = newsClass.news;
    setState(() => _loading = false);
  }

Answer 1

行前

news.add(articleModel);

添加这个：

var isDuplicated = false;
for (var new in news) {
   if (new.title == articleModel.title) {
      isDuplicated = true;
   }
}

if (!isDuplicated) {
   // Now you can add it
   news.add(articleModel);
}