Which are good LINQ equivalents in other languages?

In Java, the closest alternative that's part of the standard language is streams. Off the top of my head, it goes something like this:

List numbers = number_list.stream().filter(number -> number > 3).collect(Collectors.toList())

boolean isTrue = Stream.of(boolean_array).anyMatch(Function.identity());

String checkForNull = Optional.ofNullable(some_xml).map(SomeXml::getSomeField).map(SomeField::GetSomeAttribute).orElse("nothing here");

Off topic question about LINQ.. when should you use it? C# can be written in s few different ways. Some linq type solutions can be elegant but if the next person updating expects classic c# style it probably isn't the best option

Eloquent in PHP/Laravel is a good contender.