如何在Node.js中调用需要用户名和密码的API(How to call API that requires user name and password, in Node.js)

 除非你想要做的只是迭代一次结果，或者你需要一个可重用的实时过滤视图，你可能需要一个包含匹配的非视图列表。 创建一个List或Set来存储结果，然后迭代数据列表并添加匹配，这是一个非常好的方法，并且易于理解！ 
 
List<Data> result = Lists.newArrayList();
for (Data data : data1) {
  if (dataIds.contains(data.getId()))
    result.add(data);
}
 
 我看到你的Data类实现了一个可Identifiable接口。 鉴于此，您可以创建一个Function<Identifiable, Integer>来获取ID ... Identifiables.getIdFunction()或其他东西。 这很好，因为它可能在其他地方很有用（我在这里的博客文章中讨论了这种方法）。 有了这个，用番石榴做这件事也相当简单： 
 
Predicate<Identifiable> predicate = Predicates.compose(
    Predicates.in(dataIds), Identifiables.getIdFunction());
List<Data> filtered = Lists.newArrayList(Iterables.filter(data1, predicate));
 
 这基本上在功能上与第一个例子相同，但似乎很难理解。 由于这样做没有明显的好处（与您只想使用实时视图的情况不同），所以我的建议是先按照第一步进行。 

Unless all you want to do is iterate through the result once or you need a reusable live filtered view, you probably want a non-view list containing the matches. Creating a List or Set to store the result and then iterating through the data list and adding matches is a perfectly good approach and easy to understand!
 
List<Data> result = Lists.newArrayList();
for (Data data : data1) {
  if (dataIds.contains(data.getId()))
    result.add(data);
}
 
I see your Data class implements an Identifiable interface. Given that, you could create a Function<Identifiable, Integer> that gets the ID... Identifiables.getIdFunction() or something. This is nice because it'd likely be useful in various other places (I talk about that approach in a blog post here). With that in place, doing this with Guava would be fairly simple as well:
 
Predicate<Identifiable> predicate = Predicates.compose(
    Predicates.in(dataIds), Identifiables.getIdFunction());
List<Data> filtered = Lists.newArrayList(Iterables.filter(data1, predicate));
 
This is basically functionally equivalent to the first example, but seems like it'd be harder to understand. Since there isn't any clear benefit to doing this (unlike in a situation where you want to just use the live view), my recommendation would be to just go with the first.