java stream filter multiple conditions
You can use two streams but it would be horrible. It would must better to have a data structure which is designed for Properties. properties.ifPresentDouble("averagevote", avgRatingModel::setAvgRating); properties.ifPresentInt("nbvotes", Your problem is that you're using a different Predicate each time, because although c is the parameter to your predicate, p also varies: final Node p; Predicate<Node> matchesParentId = c -> p.id() == c.id();. The reason your existing code co, public static List<A> makeListfromGroup(Map<Object, List<A>> m, Predicate<A> condition) return m.values() .stream() .map(as -> as.stream().filter(condition).findAny().orElse(null)) .filter(Objects::nonNull) .collect(Collectors, One way to do it is. Stream<Source> stream = sourceMeta.getAllSources.parallelStream().map(x -> (Source)x); if(isAccessDisplayEnabled) stream = stream.filter(s -> isAccessDisplayEnabled(s)); src = stream.filter(s - > containsAll(s, substri, In such a small example I think readability isn't really compromised, but I still prefer using separate filter methods. Certainly if it's any more complex. This is indeed not very expensive. There's no reason to "optimize" it unless, I am assuming your Filter is a type distinct from java.util.function.Predicate , which means it needs to be adapted to it. One approach which will work goes like this: things.stream().filter(t -> filtersCollection.stream().anyMatch(f -> f.test(t))),The code that has to be executed for both alternatives is so similar that you can't predict a result reliably. The underlying object structure might differ but that's no challenge to the hotspot optimizer. So it depends on other surrounding condit, The code that has to be executed for both alternatives is so similar that you can't predict a result reliably. The underlying object structure might differ but that's no challenge to the hotspot optimizer. So it depends on other surrounding condi, A quite literal translation (and the required classes to play around) interface ScienceStudent String getClassroomId(); } interface MathStudent String getId(); } Set<ScienceStudent> filter( Collection<MathStudent> mathStudents, Map<Strin, It might be tempting to run multiple filters in your streams, but be careful—it might come with a cost. Use your filters judiciously.
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 java stream filter multiple conditions 相關參考資料
How to filter a list for multiple condition using java 8 stream ...
You can use two streams but it would be horrible. It would must better to have a data structure which is designed for Properties. properties.ifPresentDouble("averagevote", avgRatingModel::se... https://stackoverflow.com java - Stream filter by two parameters - Stack Overflow
Your problem is that you're using a different Predicate each time, because although c is the parameter to your predicate, p also varies: final Node p; Predicate<Node> matchesParentId = c -&... https://stackoverflow.com java 8 - How to use stream to apply multiple filters and convert ...
public static List<A> makeListfromGroup(Map<Object, List<A>> m, Predicate<A> condition) return m.values() .stream() .map(as -> as.stream().filter(condition).findAny().orEl... https://stackoverflow.com Java 8 Applying stream filter based on a condition - Stack Overflow
One way to do it is. Stream<Source> stream = sourceMeta.getAllSources.parallelStream().map(x -> (Source)x); if(isAccessDisplayEnabled) stream = stream.filter(s -> isAccessDisplayEnabled(s... https://stackoverflow.com Java 8 lambdas multiple filter calls - Stack Overflow
In such a small example I think readability isn't really compromised, but I still prefer using separate filter methods. Certainly if it's any more complex. This is indeed not very expensive. ... https://stackoverflow.com lambda - How to apply multiple predicates to a java.util.Stream ...
I am assuming your Filter is a type distinct from java.util.function.Predicate , which means it needs to be adapted to it. One approach which will work goes like this: things.stream().filter(t -> ... https://stackoverflow.com lambda - Java 8 Streams: multiple filters vs. complex condition - Stack ...
The code that has to be executed for both alternatives is so similar that you can't predict a result reliably. The underlying object structure might differ but that's no challenge to the hotsp... https://stackoverflow.com lambda - Java 8 Streams: multiple filters vs. complex condition ...
The code that has to be executed for both alternatives is so similar that you can't predict a result reliably. The underlying object structure might differ but that's no challenge to the hots... https://stackoverflow.com Multiple conditions to filter a result set using Java 8 - Stack ...
A quite literal translation (and the required classes to play around) interface ScienceStudent String getClassroomId(); } interface MathStudent String getId(); } Set<ScienceStudent> filter( C... https://stackoverflow.com Single vs. Multiple Filters in the Java Stream API - DZone Java
It might be tempting to run multiple filters in your streams, but be careful—it might come with a cost. Use your filters judiciously. https://dzone.com |