有一个Java等价于Javascript的“一些”方法？ [英] is there a Java equivalent to Javascript's "some" method?
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问题描述
我有一个集合，我想知道至少一个元素是否满足一些条件。基本上，JavaScript中有什么一些，我想做
I have a collection and I would like to know if at least one element meets some condition. Essentially, what some does in JavaScript, I would like to do on a collection!
推荐答案
查看 Guava 的 Iterables 类及其any() 实现。
Check out Guava's Iterables class and its any() implementation.
与其他答案中的Commons Collections示例相同，但是泛化：
More or less the same thing as the Commons Collections example in the other answer, but genericized:
List<String> strings = Arrays.asList("ohai", "wat", "fuuuu", "kthxbai");
boolean well = Iterables.any(strings, new Predicate<String>() {
@Override public boolean apply(@Nullable String s) {
return s.equalsIgnoreCase("fuuuu");
}
});
System.out.printf("Do any match? %s%n", well ? "Yep" : "Nope");
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