mirror of
https://gitee.com/chinabugotech/hutool.git
synced 2025-05-09 23:51:34 +08:00
fix code
This commit is contained in:
Looly
parent
d1a5818a8e
commit
c72e2bb5ba
@ -131,8 +131,7 @@ public class CollectorUtil {
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* @param <A> 下游操作在进行中间操作时对应类型
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* @return {@link Collector}
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*/
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public static <T, K, A, D>
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Collector<T, ?, Map<K, D>> groupingBy(final Function<? super T, ? extends K> classifier,
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public static <T, K, A, D> Collector<T, ?, Map<K, D>> groupingBy(final Function<? super T, ? extends K> classifier,
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final Collector<? super T, A, D> downstream) {
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return groupingBy(classifier, HashMap::new, downstream);
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}
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@ -145,8 +144,7 @@ public class CollectorUtil {
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* @param <K> 实体中的分组依据对应类型，也是Map中key的类型
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* @return {@link Collector}
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*/
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public static <T, K> Collector<T, ?, Map<K, List<T>>>
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groupingBy(final Function<? super T, ? extends K> classifier) {
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public static <T, K> Collector<T, ?, Map<K, List<T>>> groupingBy(final Function<? super T, ? extends K> classifier) {
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return groupingBy(classifier, Collectors.toList());
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}
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@ -161,8 +159,7 @@ public class CollectorUtil {
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* @param <U> map中value的类型
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* @return 对null友好的 toMap 操作的 {@link Collector}实现
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*/
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public static <T, K, U>
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Collector<T, ?, Map<K, U>> toMap(final Function<? super T, ? extends K> keyMapper,
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public static <T, K, U> Collector<T, ?, Map<K, U>> toMap(final Function<? super T, ? extends K> keyMapper,
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final Function<? super T, ? extends U> valueMapper,
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final BinaryOperator<U> mergeFunction) {
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return toMap(keyMapper, valueMapper, mergeFunction, HashMap::new);
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@ -233,7 +230,7 @@ public class CollectorUtil {
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*/
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public static <K, V, R extends Map<K, List<V>>> Collector<Map<K, V>, ?, R> reduceListMap(final Supplier<R> mapSupplier) {
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return Collectors.reducing(mapSupplier.get(), value -> {
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R result = mapSupplier.get();
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final R result = mapSupplier.get();
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value.forEach((k, v) -> result.computeIfAbsent(k, i -> new ArrayList<>()).add(v));
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return result;
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}, (l, r) -> {
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@ -254,7 +251,7 @@ public class CollectorUtil {
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* @return 收集器
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*/
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public static <T, K, V> Collector<T, List<T>, EntryStream<K, V>> toEntryStream(
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Function<? super T, ? extends K> keyMapper, Function<? super T, ? extends V> valueMapper) {
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final Function<? super T, ? extends K> keyMapper, final Function<? super T, ? extends V> valueMapper) {
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Objects.requireNonNull(keyMapper);
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Objects.requireNonNull(valueMapper);
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return transform(ArrayList::new, list -> EntryStream.of(list, keyMapper, valueMapper));
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@ -287,11 +284,14 @@ public class CollectorUtil {
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* @return 收集器
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*/
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public static <T, R, C extends Collection<T>> Collector<T, C, R> transform(
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Supplier<C> collFactory, Function<C, R> mapper) {
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final Supplier<C> collFactory, final Function<C, R> mapper) {
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Objects.requireNonNull(collFactory);
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Objects.requireNonNull(mapper);
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return new SimpleCollector<>(
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collFactory, C::add, (l1, l2) -> { l1.addAll(l2); return l1; }, mapper, CH_NOID
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collFactory, C::add, (l1, l2) -> {
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l1.addAll(l2);
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return l1;
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}, mapper, CH_NOID
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);
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}
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@ -309,7 +309,7 @@ public class CollectorUtil {
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* @param <T> 输入元素类型
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* @return 收集器
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*/
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public static <T, R> Collector<T, List<T>, R> transform(Function<List<T>, R> mapper) {
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public static <T, R> Collector<T, List<T>, R> transform(final Function<List<T>, R> mapper) {
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return transform(ArrayList::new, mapper);
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}
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@ -462,6 +462,7 @@ public class EasyStream<T> extends StreamWrapper<T, EasyStream<T>> implements St
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/**
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* 返回与指定函数将元素作为参数执行后组成的流。操作带下标，并行流时下标永远为-1
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* 这是一个无状态中间操作
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*
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* @param action 指定的函数
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* @return 返回叠加操作后的FastStream
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* @apiNote 该方法存在的意义主要是用来调试
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@ -475,12 +476,12 @@ public class EasyStream<T> extends StreamWrapper<T, EasyStream<T>> implements St
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* .collect(Collectors.toList());
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* }</pre>
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*/
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public EasyStream<T> peekIdx(BiConsumer<? super T, Integer> action) {
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public EasyStream<T> peekIdx(final BiConsumer<? super T, Integer> action) {
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Objects.requireNonNull(action);
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if (isParallel()) {
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return peek(e -> action.accept(e, NOT_FOUND_INDEX));
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} else {
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AtomicInteger index = new AtomicInteger(NOT_FOUND_INDEX);
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final AtomicInteger index = new AtomicInteger(NOT_FOUND_INDEX);
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return peek(e -> action.accept(e, index.incrementAndGet()));
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}
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}
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@ -688,7 +689,7 @@ public class EasyStream<T> extends StreamWrapper<T, EasyStream<T>> implements St
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* @return 实现类
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*/
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@Override
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protected EasyStream<T> convertToStreamImpl(Stream<T> stream) {
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protected EasyStream<T> convertToStreamImpl(final Stream<T> stream) {
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return new EasyStream<>(stream);
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}
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@ -852,10 +853,10 @@ public class EasyStream<T> extends StreamWrapper<T, EasyStream<T>> implements St
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* eg:
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* {@code List studentTree = EasyStream.of(students).toTree(Student::getId, Student::getParentId, Student::setChildren) }
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*/
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public <R extends Comparable<R>> List<T> toTree(Function<T, R> idGetter,
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Function<T, R> pIdGetter,
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BiConsumer<T, List<T>> childrenSetter) {
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Map<R, List<T>> pIdValuesMap = group(pIdGetter);
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public <R extends Comparable<R>> List<T> toTree(final Function<T, R> idGetter,
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final Function<T, R> pIdGetter,
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final BiConsumer<T, List<T>> childrenSetter) {
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final Map<R, List<T>> pIdValuesMap = group(pIdGetter);
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return getChildrenFromMapByPidAndSet(idGetter, childrenSetter, pIdValuesMap, pIdValuesMap.get(null));
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}
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@ -873,12 +874,12 @@ public class EasyStream<T> extends StreamWrapper<T, EasyStream<T>> implements St
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* {@code List studentTree = EasyStream.of(students).toTree(Student::getId, Student::getParentId, Student::setChildren, Student::getMatchParent) }
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*/
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public <R extends Comparable<R>> List<T> toTree(Function<T, R> idGetter,
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Function<T, R> pIdGetter,
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BiConsumer<T, List<T>> childrenSetter,
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Predicate<T> parentPredicate) {
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List<T> list = toList();
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List<T> parents = EasyStream.of(list).filter(e ->
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public <R extends Comparable<R>> List<T> toTree(final Function<T, R> idGetter,
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final Function<T, R> pIdGetter,
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final BiConsumer<T, List<T>> childrenSetter,
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final Predicate<T> parentPredicate) {
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final List<T> list = toList();
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final List<T> parents = EasyStream.of(list).filter(e ->
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// 此处是为了适配 parentPredicate.test空指针 情况
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// 因为Predicate.test的返回值是boolean，所以如果 e -> null 这种返回null的情况，会直接抛出NPE
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Opt.ofTry(() -> parentPredicate.test(e)).filter(Boolean::booleanValue).isPresent())
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@ -897,13 +898,13 @@ public class EasyStream<T> extends StreamWrapper<T, EasyStream<T>> implements St
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* @param <R> 此处是id的泛型限制
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* @return list 组装好的树
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*/
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private <R extends Comparable<R>> List<T> getChildrenFromMapByPidAndSet(Function<T, R> idGetter,
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BiConsumer<T, List<T>> childrenSetter,
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Map<R, List<T>> pIdValuesMap,
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List<T> parents) {
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MutableObj<Consumer<List<T>>> recursiveRef = new MutableObj<>();
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Consumer<List<T>> recursive = values -> EasyStream.of(values, isParallel()).forEach(value -> {
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List<T> children = pIdValuesMap.get(idGetter.apply(value));
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private <R extends Comparable<R>> List<T> getChildrenFromMapByPidAndSet(final Function<T, R> idGetter,
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final BiConsumer<T, List<T>> childrenSetter,
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final Map<R, List<T>> pIdValuesMap,
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final List<T> parents) {
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final MutableObj<Consumer<List<T>>> recursiveRef = new MutableObj<>();
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final Consumer<List<T>> recursive = values -> EasyStream.of(values, isParallel()).forEach(value -> {
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final List<T> children = pIdValuesMap.get(idGetter.apply(value));
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childrenSetter.accept(value, children);
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recursiveRef.get().accept(children);
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});
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@ -922,9 +923,9 @@ public class EasyStream<T> extends StreamWrapper<T, EasyStream<T>> implements St
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* eg:
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* {@code List students = EasyStream.of(studentTree).flatTree(Student::getChildren, Student::setChildren).toList() }
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*/
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public EasyStream<T> flatTree(Function<T, List<T>> childrenGetter, BiConsumer<T, List<T>> childrenSetter) {
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MutableObj<Function<T, EasyStream<T>>> recursiveRef = new MutableObj<>();
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Function<T, EasyStream<T>> recursive = e -> EasyStream.of(childrenGetter.apply(e)).flat(recursiveRef.get()).unshift(e);
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public EasyStream<T> flatTree(final Function<T, List<T>> childrenGetter, final BiConsumer<T, List<T>> childrenSetter) {
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final MutableObj<Function<T, EasyStream<T>>> recursiveRef = new MutableObj<>();
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final Function<T, EasyStream<T>> recursive = e -> EasyStream.of(childrenGetter.apply(e)).flat(recursiveRef.get()).unshift(e);
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recursiveRef.set(recursive);
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return flat(recursive).peek(e -> childrenSetter.accept(e, null));
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}
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@ -22,7 +22,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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*
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* @param stream 包装的流对象
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*/
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protected StreamWrapper(Stream<T> stream) {
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protected StreamWrapper(final Stream<T> stream) {
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Objects.requireNonNull(stream, "stream must not null");
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this.stream = stream;
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}
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@ -35,7 +35,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 返回叠加过滤操作后的流
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*/
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@Override
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public I filter(Predicate<? super T> predicate) {
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public I filter(final Predicate<? super T> predicate) {
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return convertToStreamImpl(stream.filter(predicate));
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}
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@ -47,7 +47,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 叠加操作后元素类型全为int的流
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*/
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@Override
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public IntStream mapToInt(ToIntFunction<? super T> mapper) {
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public IntStream mapToInt(final ToIntFunction<? super T> mapper) {
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return stream.mapToInt(mapper);
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}
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@ -59,7 +59,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 叠加操作后元素类型全为long的流
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*/
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@Override
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public LongStream mapToLong(ToLongFunction<? super T> mapper) {
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public LongStream mapToLong(final ToLongFunction<? super T> mapper) {
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return stream.mapToLong(mapper);
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}
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@ -71,7 +71,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 叠加操作后元素类型全为double的流
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*/
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@Override
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public DoubleStream mapToDouble(ToDoubleFunction<? super T> mapper) {
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public DoubleStream mapToDouble(final ToDoubleFunction<? super T> mapper) {
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return stream.mapToDouble(mapper);
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}
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@ -83,7 +83,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 返回叠加拆分操作后的IntStream
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*/
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@Override
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public IntStream flatMapToInt(Function<? super T, ? extends IntStream> mapper) {
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public IntStream flatMapToInt(final Function<? super T, ? extends IntStream> mapper) {
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return stream.flatMapToInt(mapper);
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}
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@ -95,7 +95,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 返回叠加拆分操作后的LongStream
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*/
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@Override
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public LongStream flatMapToLong(Function<? super T, ? extends LongStream> mapper) {
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public LongStream flatMapToLong(final Function<? super T, ? extends LongStream> mapper) {
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return stream.flatMapToLong(mapper);
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}
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@ -107,7 +107,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 返回叠加拆分操作后的DoubleStream
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*/
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@Override
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public DoubleStream flatMapToDouble(Function<? super T, ? extends DoubleStream> mapper) {
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public DoubleStream flatMapToDouble(final Function<? super T, ? extends DoubleStream> mapper) {
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return stream.flatMapToDouble(mapper);
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}
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@ -145,7 +145,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 一个元素按指定的Comparator排序的流
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*/
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@Override
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public I sorted(Comparator<? super T> comparator) {
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public I sorted(final Comparator<? super T> comparator) {
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return convertToStreamImpl(stream.sorted(comparator));
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}
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@ -167,7 +167,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* }</pre>
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*/
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@Override
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public I peek(Consumer<? super T> action) {
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public I peek(final Consumer<? super T> action) {
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return convertToStreamImpl(stream.peek(action));
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}
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@ -179,7 +179,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 截取后的流
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*/
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@Override
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public I limit(long maxSize) {
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public I limit(final long maxSize) {
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return convertToStreamImpl(stream.limit(maxSize));
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}
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@ -191,7 +191,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 丢弃前面n个元素后的剩余元素组成的流
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*/
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@Override
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public I skip(long n) {
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public I skip(final long n) {
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return convertToStreamImpl(stream.skip(n));
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}
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@ -202,7 +202,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @param action 操作
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*/
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@Override
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public void forEach(Consumer<? super T> action) {
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public void forEach(final Consumer<? super T> action) {
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stream.forEach(action);
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}
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@ -213,7 +213,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @param action 操作
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*/
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@Override
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public void forEachOrdered(Consumer<? super T> action) {
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public void forEachOrdered(final Consumer<? super T> action) {
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stream.forEachOrdered(action);
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}
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@ -238,7 +238,8 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @throws ArrayStoreException 如果元素转换失败，例如不是该元素类型及其父类，则抛出该异常
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*/
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@Override
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public <A> A[] toArray(IntFunction<A[]> generator) {
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public <A> A[] toArray(final IntFunction<A[]> generator) {
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//noinspection SuspiciousToArrayCall
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return stream.toArray(generator);
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}
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@ -263,7 +264,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 聚合计算后的值
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*/
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@Override
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public T reduce(T identity, BinaryOperator<T> accumulator) {
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public T reduce(final T identity, final BinaryOperator<T> accumulator) {
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return stream.reduce(identity, accumulator);
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}
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@ -298,7 +299,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @see #max(Comparator)
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*/
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@Override
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public Optional<T> reduce(BinaryOperator<T> accumulator) {
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public Optional<T> reduce(final BinaryOperator<T> accumulator) {
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return stream.reduce(accumulator);
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}
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@ -315,7 +316,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @see #reduce(Object, BinaryOperator)
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*/
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@Override
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public <U> U reduce(U identity, BiFunction<U, ? super T, U> accumulator, BinaryOperator<U> combiner) {
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public <U> U reduce(final U identity, final BiFunction<U, ? super T, U> accumulator, final BinaryOperator<U> combiner) {
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return stream.reduce(identity, accumulator, combiner);
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}
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@ -333,7 +334,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* }</pre>
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*/
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@Override
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public <R> R collect(Supplier<R> supplier, BiConsumer<R, ? super T> accumulator, BiConsumer<R, R> combiner) {
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public <R> R collect(final Supplier<R> supplier, final BiConsumer<R, ? super T> accumulator, final BiConsumer<R, R> combiner) {
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return stream.collect(supplier, accumulator, combiner);
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}
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@ -347,7 +348,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 收集后的容器
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*/
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@Override
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public <R, A> R collect(Collector<? super T, A, R> collector) {
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public <R, A> R collect(final Collector<? super T, A, R> collector) {
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return stream.collect(collector);
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}
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@ -358,7 +359,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 最小值
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*/
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@Override
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public Optional<T> min(Comparator<? super T> comparator) {
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public Optional<T> min(final Comparator<? super T> comparator) {
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return stream.min(comparator);
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}
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@ -369,7 +370,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
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* @return 最大值
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*/
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@Override
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public Optional<T> max(Comparator<? super T> comparator) {
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public Optional<T> max(final Comparator<? super T> comparator) {
|
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return stream.max(comparator);
|
||||
}
|
||||
|
||||
@ -390,7 +391,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
|
||||
* @return 是否有任何一个元素满足给定断言
|
||||
*/
|
||||
@Override
|
||||
public boolean anyMatch(Predicate<? super T> predicate) {
|
||||
public boolean anyMatch(final Predicate<? super T> predicate) {
|
||||
return stream.anyMatch(predicate);
|
||||
}
|
||||
|
||||
@ -401,7 +402,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
|
||||
* @return 是否所有元素满足给定断言
|
||||
*/
|
||||
@Override
|
||||
public boolean allMatch(Predicate<? super T> predicate) {
|
||||
public boolean allMatch(final Predicate<? super T> predicate) {
|
||||
return stream.allMatch(predicate);
|
||||
}
|
||||
|
||||
@ -412,7 +413,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
|
||||
* @return 是否没有元素满足给定断言
|
||||
*/
|
||||
@Override
|
||||
public boolean noneMatch(Predicate<? super T> predicate) {
|
||||
public boolean noneMatch(final Predicate<? super T> predicate) {
|
||||
return stream.noneMatch(predicate);
|
||||
}
|
||||
|
||||
@ -504,7 +505,7 @@ abstract class StreamWrapper<T, I extends Stream<T>> implements Stream<T>, Itera
|
||||
* @return 流
|
||||
*/
|
||||
@Override
|
||||
public I onClose(Runnable closeHandler) {
|
||||
public I onClose(final Runnable closeHandler) {
|
||||
return convertToStreamImpl(stream.onClose(closeHandler));
|
||||
}
|
||||
|
||||
|
||||
@ -47,14 +47,14 @@ public class CollectorUtilTest {
|
||||
|
||||
@Test
|
||||
public void testToEasyStream() {
|
||||
Stream<Integer> stream =Stream.of(1, 2, 3, 4)
|
||||
final Stream<Integer> stream =Stream.of(1, 2, 3, 4)
|
||||
.collect(CollectorUtil.toEasyStream());
|
||||
Assert.assertEquals(EasyStream.class, stream.getClass());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testToEntryStream() {
|
||||
Map<String, Integer> map = Stream.of(1, 2, 3, 4, 5)
|
||||
final Map<String, Integer> map = Stream.of(1, 2, 3, 4, 5)
|
||||
// 转为EntryStream
|
||||
.collect(CollectorUtil.toEntryStream(Function.identity(), String::valueOf))
|
||||
// 过滤偶数
|
||||
|
||||
@ -455,7 +455,7 @@ public class EasyStreamTest {
|
||||
@Test
|
||||
public void testToTree() {
|
||||
Consumer<Object> test = o -> {
|
||||
List<Student> studentTree = EasyStream
|
||||
final List<Student> studentTree = EasyStream
|
||||
.of(
|
||||
Student.builder().id(1L).name("dromara").build(),
|
||||
Student.builder().id(2L).name("baomidou").build(),
|
||||
@ -488,7 +488,7 @@ public class EasyStreamTest {
|
||||
), studentTree);
|
||||
};
|
||||
test = test.andThen(o -> {
|
||||
List<Student> studentTree = EasyStream
|
||||
final List<Student> studentTree = EasyStream
|
||||
.of(
|
||||
Student.builder().id(1L).name("dromara").matchParent(true).build(),
|
||||
Student.builder().id(2L).name("baomidou").matchParent(true).build(),
|
||||
@ -525,7 +525,7 @@ public class EasyStreamTest {
|
||||
|
||||
@Test
|
||||
public void testFlatTree() {
|
||||
List<Student> studentTree = asList(
|
||||
final List<Student> studentTree = asList(
|
||||
Student.builder().id(1L).name("dromara")
|
||||
.children(asList(Student.builder().id(3L).name("hutool").parentId(1L)
|
||||
.children(singletonList(Student.builder().id(6L).name("looly").parentId(3L).build()))
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user