本文整理汇总了Java中java.util.function.BiFunction类的典型用法代码示例。如果您正苦于以下问题:Java BiFunction类的具体用法?Java BiFunction怎么用?Java BiFunction使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
BiFunction类属于java.util.function包,在下文中一共展示了BiFunction类的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testRandomized
import java.util.function.BiFunction; //导入依赖的package包/类
static void testRandomized(BiFunction<int[], Integer, List<Integer>> solution) {
Random rnd = new Random(0);
for (int test = 0; test < 20; test++) {
int[] arr = new int[rnd.nextInt(MAX_ITEMS) + 1];
for (int i = 0; i < arr.length; i++) {
arr[i] = rnd.nextInt(MAX_VALUE);
}
for (int j = 0; j < 5; j++) {
int target = randomDifference(arr, 0, arr.length - 1, rnd);
System.out.println("Array length: " + arr.length);
System.out.println("Target: " + target);
System.out.println("Array:");
System.out.println(Arrays.toString(arr).replaceAll("[\\[\\],]", " ").trim());
List<Integer> subtractcionOrder = solution.apply(arr, target);
verifySolution(arr, target, subtractcionOrder);
System.out.println("Result: " + subtractcionOrder.toString().replaceAll("[\\[\\],]", " ").trim());
System.out.println();
}
}
}
示例2: test2
import java.util.function.BiFunction; //导入依赖的package包/类
public static <R,P1, P2> R test2(String name, R receiver, BiFunction<P1, P2, R> m,
P1 arg1, P2 arg2,
Class<? extends Exception> ...ex) {
try {
R result = m.apply(arg1, arg2);
if (!shouldFail(ex)) {
System.out.println("success: " + name + "(" + arg1 + ", "
+ arg2 + ")");
return result;
} else {
throw new AssertionError("Expected " + expectedNames(ex)
+ " not raised for "
+ name + "(" + arg1 +", " + arg2 + ")");
}
} catch (Exception x) {
if (!isExpected(x, ex)) {
throw x;
} else {
System.out.println("success: " + name + "(" + arg1 + ", "
+ arg2 + ") - Got expected exception: " + x);
return receiver;
}
}
}
示例3: replaceAll
import java.util.function.BiFunction; //导入依赖的package包/类
@Override
public void replaceAll(BiFunction<? super K, ? super V, ? extends V> function) {
Node<K,V>[] tab;
if (function == null)
throw new NullPointerException();
if (size > 0 && (tab = table) != null) {
int mc = modCount;
for (int i = 0; i < tab.length; ++i) {
for (Node<K,V> e = tab[i]; e != null; e = e.next) {
e.value = function.apply(e.key, e.value);
}
}
if (modCount != mc)
throw new ConcurrentModificationException();
}
}
示例4: map
import java.util.function.BiFunction; //导入依赖的package包/类
/**
* Applies the function {@code f} to each element of the stream.
* The function {@code f} is called with the index (in {@code ys}) of the
* element to map (first argument) and with the element itself (second
* argument). That is: {@code map(f,[v,w,...]) = [f(0,v),f(1,w),...]}.
* For example (pseudo code) if {@code f(i,x) = i+x} then
* {@code map(f,[1,2,3]) = [1,3,5]}.
* @param <Y> any type.
* @param <Z> any type.
* @param f turns an index and a {@code Y} into a {@code Z}.
* @param ys the list to map.
* @return a new list with the mapped elements.
* @throws NullPointerException if any argument is {@code null}.
*/
public static <Y, Z>
Stream<Z> map(BiFunction<Integer, Y, Z> f, Stream<Y> ys) {
requireNonNull(f, "f");
requireNonNull(ys, "ys");
Iterator<Y> iy = ys.iterator();
List<Z> zs = new ArrayList<>();
int index = 0;
while (iy.hasNext()) {
zs.add(f.apply(index++, iy.next()));
}
return zs.stream();
}
示例5: executePreparedStatement
import java.util.function.BiFunction; //导入依赖的package包/类
@Test
public void executePreparedStatement() throws CheckedFutureException {
final Long result = 413L;
final String command = "command";
final Integer set = 223;
final PreparedStatement ps = PreparedStatement.apply(command).setInteger(set);
final Supplier<Connection> sup = new ConnectionSupplier() {
@Override
BiFunction<String, List<Value<?>>, Exchange<Long>> extendedExecuteExchange() {
return (c, b) -> {
assertEquals(command, c);
assertEquals(Arrays.asList(new IntegerValue(set)), b);
return Exchange.value(result);
};
}
};
assertEquals(result, sup.get().execute(ps).get(timeout));
}
示例6: zipper
import java.util.function.BiFunction; //导入依赖的package包/类
/**
* @param first
* @param second
* @param function
* @param <F>
* @param <S>
* @param <T>
* @return
*/
public static <F, S, T> List<T> zipper(
final List<F> first,
final List<S> second,
final BiFunction<F, S, T> function
) {
final List<T> result = new ArrayList<>();
Fn.itList(first, (key, index) -> {
final S value = getEnsure(second, index);
final T merged = function.apply(key, value);
if (null != merged) {
result.add(merged);
}
});
return result;
}
示例7: JsonArrayMatcher
import java.util.function.BiFunction; //导入依赖的package包/类
public JsonArrayMatcher(T vnetEntityValue, Function<T, String> getKey1,
BiPredicate<T, JsonObject> checkKey1,
List<String> jsonFieldNames1,
BiFunction<T, String, String> getValue1) {
vnetEntity = vnetEntityValue;
getKey = getKey1;
checkKey = checkKey1;
jsonFieldNames = jsonFieldNames1;
getValue = getValue1;
}
示例8: makeRef
import java.util.function.BiFunction; //导入依赖的package包/类
/**
* Constructs a {@code TerminalOp} that implements a functional reduce on
* reference values.
*
* @param <T> the type of the input elements
* @param <U> the type of the result
* @param seed the identity element for the reduction
* @param reducer the accumulating function that incorporates an additional
* input element into the result
* @param combiner the combining function that combines two intermediate
* results
* @return a {@code TerminalOp} implementing the reduction
*/
public static <T, U> TerminalOp<T, U>
makeRef(U seed, BiFunction<U, ? super T, U> reducer, BinaryOperator<U> combiner) {
Objects.requireNonNull(reducer);
Objects.requireNonNull(combiner);
class ReducingSink extends Box<U> implements AccumulatingSink<T, U, ReducingSink> {
@Override
public void begin(long size) {
state = seed;
}
@Override
public void accept(T t) {
state = reducer.apply(state, t);
}
@Override
public void combine(ReducingSink other) {
state = combiner.apply(state, other.state);
}
}
return new ReduceOp<T, U, ReducingSink>(StreamShape.REFERENCE) {
@Override
public ReducingSink makeSink() {
return new ReducingSink();
}
};
}
示例9: accumulatingFunction
import java.util.function.BiFunction; //导入依赖的package包/类
private BiFunction<List<RangeStatistics>, RangeStatistics, List<RangeStatistics>> accumulatingFunction() {
return (rangeStatistics, rangeStatistic) -> {
List<RangeStatistics> result = new ArrayList<>(rangeStatistics);
addOrReplace(rangeStatistics, result, rangeStatistic);
return result;
};
}
示例10: testArray
import java.util.function.BiFunction; //导入依赖的package包/类
@Test(dataProvider = "arrayTypesProvider")
public void testArray(ArrayType<?> arrayType) {
BiFunction<ArrayType<?>, Integer, Object> constructor = (at, s) -> {
Object a = at.construct(s);
for (int x = 0; x < s; x++) {
at.set(a, x, x % 8);
}
return a;
};
BiFunction<ArrayType<?>, Object, Object> cloner = (at, a) ->
constructor.apply(at, Array.getLength(a));
testArrayType(arrayType, constructor, cloner);
}
示例11: setUp
import java.util.function.BiFunction; //导入依赖的package包/类
@Before
public void setUp() throws Exception {
clusterCommunicator = createNiceMock(ClusterCommunicationService.class);
clusterCommunicator.addSubscriber(anyObject(MessageSubject.class),
anyObject(ClusterMessageHandler.class), anyObject(ExecutorService.class));
expectLastCall().anyTimes();
replay(clusterCommunicator);
ClusterService clusterService = new TestClusterService();
testGossipDeviceStore = new TestGossipDeviceStore(deviceClockService, clusterService, clusterCommunicator);
testGossipDeviceStore.mastershipService = new TestMastershipService();
ecMapBuilder = createNiceMock(EventuallyConsistentMapBuilder.class);
expect(ecMapBuilder.withName(anyObject(String.class))).andReturn(ecMapBuilder).anyTimes();
expect(ecMapBuilder.withSerializer(anyObject(KryoNamespace.Builder.class))).andReturn(ecMapBuilder).anyTimes();
expect(ecMapBuilder.withAntiEntropyPeriod(5, TimeUnit.SECONDS)).andReturn(ecMapBuilder).anyTimes();
expect(ecMapBuilder.withTimestampProvider(anyObject(BiFunction.class))).andReturn(ecMapBuilder).anyTimes();
expect(ecMapBuilder.withTombstonesDisabled()).andReturn(ecMapBuilder).anyTimes();
ecMap = createNiceMock(EventuallyConsistentMap.class);
expect(ecMapBuilder.build()).andReturn(ecMap).anyTimes();
testStorageService = createNiceMock(StorageService.class);
expect(testStorageService.eventuallyConsistentMapBuilder()).andReturn(ecMapBuilder).anyTimes();
replay(testStorageService, ecMapBuilder, ecMap);
testGossipDeviceStore.storageService = testStorageService;
testGossipDeviceStore.deviceClockService = deviceClockService;
gossipDeviceStore = testGossipDeviceStore;
gossipDeviceStore.activate();
deviceStore = gossipDeviceStore;
verify(clusterCommunicator);
reset(clusterCommunicator);
}
示例12: throwingRuntime
import java.util.function.BiFunction; //导入依赖的package包/类
/**
* Converts the provided bifunction into a regular BiFunction, where any thrown exceptions
* are wrapped in a RuntimeException
*/
static <A, B, R, X extends Exception> BiFunction<A, B, R> throwingRuntime(ThrowingBiFunction<A, B, R, X> f) {
return (a, b) -> {
try {
return f.apply(a, b);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
};
}
示例13: asyncRecoverReplica
import java.util.function.BiFunction; //导入依赖的package包/类
public Future<Void> asyncRecoverReplica(IndexShard replica, BiFunction<IndexShard, DiscoveryNode, RecoveryTarget> targetSupplier)
throws IOException {
FutureTask<Void> task = new FutureTask<>(() -> {
recoverReplica(replica, targetSupplier);
return null;
});
threadPool.generic().execute(task);
return task;
}
示例14: UninstallNpmDependencyButtonListener
import java.util.function.BiFunction; //导入依赖的package包/类
UninstallNpmDependencyButtonListener(BiFunction<Collection<String>, IProgressMonitor, IStatus> uninstallAction,
Supplier<IInputValidator> validator, StatusHelper statusHelper, Supplier<String> initalValue) {
this.statusHelper = statusHelper;
this.validator = validator;
this.uninstallAction = uninstallAction;
this.initalValue = initalValue;
}
示例15: pairOp
import java.util.function.BiFunction; //导入依赖的package包/类
public Vector3d pairOp(Vector3d other, BiFunction<Double, Double, Double> function)
{
setX(function.apply(x(), other.x()));
setY(function.apply(y(), other.y()));
setZ(function.apply(z(), other.z()));
return this;
}