本文整理了Java中reactor.util.function.Tuples.fn4()方法的一些代码示例，展示了Tuples.fn4()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Tuples.fn4()方法的具体详情如下：
包路径：reactor.util.function.Tuples
类名称：Tuples
方法名：fn4

Tuples.fn4介绍

[英]A converting function from Object array to Tuple4
[中]从对象数组到Tuple4的转换函数

代码示例

代码示例来源：origin: reactor/reactor-core

/**
 * A converting function from Object array to {@link Tuple4} to R.
 *
 * @param <T1> The type of the first value.
 * @param <T2> The type of the second value.
 * @param <T3> The type of the third value.
 * @param <T4> The type of the fourth value.
 * @param <R> The type of the return value.
 * @param delegate the function to delegate to
 *
 * @return The unchecked conversion function to R.
 */
public static <T1, T2, T3, T4, R> Function<Object[], R> fn4(final Function<Tuple4<T1, T2, T3, T4>, R> delegate) {
  return objects -> delegate.apply(Tuples.<T1, T2, T3, T4>fn4().apply(objects));
}

代码示例来源：origin: reactor/reactor-core

/**
 * Zip four sources together, that is to say wait for all the sources to emit one
 * element and combine these elements once into a {@link Tuple4}.
 * The operator will continue doing so until any of the sources completes.
 * Errors will immediately be forwarded.
 * This "Step-Merge" processing is especially useful in Scatter-Gather scenarios.
 * <p>
 * <img class="marble" src="doc-files/marbles/zipFixedSourcesForFlux.svg" alt="">
 *
 * @param source1 The first upstream {@link Publisher} to subscribe to.
 * @param source2 The second upstream {@link Publisher} to subscribe to.
 * @param source3 The third upstream {@link Publisher} to subscribe to.
 * @param source4 The fourth upstream {@link Publisher} to subscribe to.
 * @param <T1> type of the value from source1
 * @param <T2> type of the value from source2
 * @param <T3> type of the value from source3
 * @param <T4> type of the value from source4
 *
 * @return a zipped {@link Flux}
 */
public static <T1, T2, T3, T4> Flux<Tuple4<T1, T2, T3, T4>> zip(Publisher<? extends T1> source1,
    Publisher<? extends T2> source2,
    Publisher<? extends T3> source3,
    Publisher<? extends T4> source4) {
  return zip(Tuples.fn4(), source1, source2, source3, source4);
}

代码示例来源：origin: reactor/reactor-core

@Test
public void fn4() {
  Integer[] source = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8 };
  Tuple4<Object, Object, Object, Object> tuple = Tuples.fn4().apply(source);
  assertThat(tuple.getT1()).isEqualTo(1);
  assertThat(tuple.getT2()).isEqualTo(2);
  assertThat(tuple.getT3()).isEqualTo(3);
  assertThat(tuple.getT4()).isEqualTo(4);
  assertThat(tuple)
      .isInstanceOf(Tuple8.class)
      .containsExactly(1, 2, 3, 4, 5, 6, 7, 8);
}

代码示例来源：origin: reactor/reactor-core

@Test
public void fn4Delegate() {
  Integer[] source = new Integer[] { 1, 2, 3, 4, 5, 6, 7, 8 };
  Function<Tuple4<Integer, Integer, Integer, Integer>, Tuple4> invert =
      t4 -> new Tuple4<>(t4.getT4(), t4.getT3(), t4.getT2(), t4.getT1());
  Tuple4 tuple = Tuples.fn4(invert).apply(source);
  assertThat(tuple.getT1()).isEqualTo(4);
  assertThat(tuple.getT2()).isEqualTo(3);
  assertThat(tuple.getT3()).isEqualTo(2);
  assertThat(tuple.getT4()).isEqualTo(1);
  assertThat((Object) tuple).isExactlyInstanceOf(Tuple4.class);
}

代码示例来源：origin: io.projectreactor/reactor-core

/**
 * A converting function from Object array to {@link Tuple4} to R.
 *
 * @param <T1> The type of the first value.
 * @param <T2> The type of the second value.
 * @param <T3> The type of the third value.
 * @param <T4> The type of the fourth value.
 * @param <R> The type of the return value.
 * @param delegate the function to delegate to
 *
 * @return The unchecked conversion function to R.
 */
public static <T1, T2, T3, T4, R> Function<Object[], R> fn4(final Function<Tuple4<T1, T2, T3, T4>, R> delegate) {
  return objects -> delegate.apply(Tuples.<T1, T2, T3, T4>fn4().apply(objects));
}

代码示例来源：origin: io.projectreactor/reactor-core

/**
 * Zip four sources together, that is to say wait for all the sources to emit one
 * element and combine these elements once into a {@link Tuple4}.
 * The operator will continue doing so until any of the sources completes.
 * Errors will immediately be forwarded.
 * This "Step-Merge" processing is especially useful in Scatter-Gather scenarios.
 * <p>
 * <img class="marble" src="doc-files/marbles/zipFixedSourcesForFlux.svg" alt="">
 *
 * @param source1 The first upstream {@link Publisher} to subscribe to.
 * @param source2 The second upstream {@link Publisher} to subscribe to.
 * @param source3 The third upstream {@link Publisher} to subscribe to.
 * @param source4 The fourth upstream {@link Publisher} to subscribe to.
 * @param <T1> type of the value from source1
 * @param <T2> type of the value from source2
 * @param <T3> type of the value from source3
 * @param <T4> type of the value from source4
 *
 * @return a zipped {@link Flux}
 */
public static <T1, T2, T3, T4> Flux<Tuple4<T1, T2, T3, T4>> zip(Publisher<? extends T1> source1,
    Publisher<? extends T2> source2,
    Publisher<? extends T3> source3,
    Publisher<? extends T4> source4) {
  return zip(Tuples.fn4(), source1, source2, source3, source4);
}