io.vavr.control.Try.flatMap()方法的使用及代码示例

x33g5p2x  于2022-01-30 转载在 其他  
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本文整理了Java中io.vavr.control.Try.flatMap()方法的一些代码示例，展示了Try.flatMap()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。Try.flatMap()方法的具体详情如下：
包路径：io.vavr.control.Try
类名称：Try
方法名：flatMap

Try.flatMap介绍

[英]Shortcut for flatMapTry(mapper::apply), see #flatMapTry(CheckedFunction1).
[中]flatMapTry的快捷方式（mapper:：apply），请参见#flatMapTry（CheckedFunction1）。

代码示例

代码示例来源：origin: vavr-io/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function8<? super T1, ? super T2, ? super T3, ? super T4, ? super T5, ? super T6, ? super T7, ? super T8, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.flatMap(t4 ->
  15.     ts5.flatMap(t5 ->
  16.     ts6.flatMap(t6 ->
  17.     ts7.flatMap(t7 ->
  18.     ts8.map(t8 -> f.apply(t1, t2, t3, t4, t5, t6, t7, t8)))))))));
  19. }

代码示例来源：origin: vavr-io/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function7<? super T1, ? super T2, ? super T3, ? super T4, ? super T5, ? super T6, ? super T7, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.flatMap(t4 ->
  15.     ts5.flatMap(t5 ->
  16.     ts6.flatMap(t6 ->
  17.     ts7.map(t7 -> f.apply(t1, t2, t3, t4, t5, t6, t7))))))));
  18. }

代码示例来源：origin: vavr-io/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function5<? super T1, ? super T2, ? super T3, ? super T4, ? super T5, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.flatMap(t4 ->
  15.     ts5.map(t5 -> f.apply(t1, t2, t3, t4, t5))))));
  16. }

代码示例来源：origin: vavr-io/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function6<? super T1, ? super T2, ? super T3, ? super T4, ? super T5, ? super T6, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.flatMap(t4 ->
  15.     ts5.flatMap(t5 ->
  16.     ts6.map(t6 -> f.apply(t1, t2, t3, t4, t5, t6)))))));
  17. }

代码示例来源：origin: vavr-io/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function4<? super T1, ? super T2, ? super T3, ? super T4, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.map(t4 -> f.apply(t1, t2, t3, t4)))));
  15. }

代码示例来源：origin: vavr-io/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(BiFunction<? super T1, ? super T2, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.map(t2 -> f.apply(t1, t2)));
  13. }

代码示例来源：origin: vavr-io/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function3<? super T1, ? super T2, ? super T3, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.map(t3 -> f.apply(t1, t2, t3))));
  14. }

代码示例来源：origin: vavr-io/vavr

  1. /**
  2.  * Returns a this and that Future result combined using a given combinator function.
  3.  * <p>
  4.  * If this Future failed the result contains this failure. Otherwise the result contains that failure or
  5.  * a combination of both successful Future results.
  6.  *
  7.  * @param that       Another Future
  8.  * @param combinator The combinator function
  9.  * @param <U>        Result type of {@code that}
  10.  * @param <R>        Result type of {@code f}
  11.  * @return A new Future that returns both Future results.
  12.  * @throws NullPointerException if {@code that} is null
  13.  */
  14. @SuppressWarnings({"deprecation", "unchecked"})
  15. default <U, R> Future<R> zipWith(Future<? extends U> that, BiFunction<? super T, ? super U, ? extends R> combinator) {
  16.   Objects.requireNonNull(that, "that is null");
  17.   Objects.requireNonNull(combinator, "combinator is null");
  18.   return run(executor(), complete ->
  19.     onComplete(res1 -> {
  20.       if (res1.isFailure()) {
  21.         complete.with((Try.Failure<R>) res1);
  22.       } else {
  23.         that.onComplete(res2 -> {
  24.           final Try<R> result = res1.flatMap(t -> res2.map(u -> combinator.apply(t, u)));
  25.           complete.with(result);
  26.         });
  27.       }
  28.     })
  29.   );
  30. }

代码示例来源：origin: io.vavr/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function8<? super T1, ? super T2, ? super T3, ? super T4, ? super T5, ? super T6, ? super T7, ? super T8, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.flatMap(t4 ->
  15.     ts5.flatMap(t5 ->
  16.     ts6.flatMap(t6 ->
  17.     ts7.flatMap(t7 ->
  18.     ts8.map(t8 -> f.apply(t1, t2, t3, t4, t5, t6, t7, t8)))))))));
  19. }

代码示例来源：origin: io.vavr/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function6<? super T1, ? super T2, ? super T3, ? super T4, ? super T5, ? super T6, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.flatMap(t4 ->
  15.     ts5.flatMap(t5 ->
  16.     ts6.map(t6 -> f.apply(t1, t2, t3, t4, t5, t6)))))));
  17. }

代码示例来源：origin: io.vavr/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function5<? super T1, ? super T2, ? super T3, ? super T4, ? super T5, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.flatMap(t4 ->
  15.     ts5.map(t5 -> f.apply(t1, t2, t3, t4, t5))))));
  16. }

代码示例来源：origin: io.vavr/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function4<? super T1, ? super T2, ? super T3, ? super T4, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.flatMap(t3 ->
  14.     ts4.map(t4 -> f.apply(t1, t2, t3, t4)))));
  15. }

代码示例来源：origin: martincooper/java-datatable

  1. /**
  2.  * Validate the sort items and columns are ok to perform a sort.
  3.  *
  4.  * @param table The underlying data table.
  5.  * @param sortItems The sort items.
  6.  * @return Return the validation result.
  7.  */
  8. private static Try<Void> validateSortColumns(DataTable table, Seq<SortItem> sortItems) {
  9.   return validateSortColumnIdentity(table, sortItems)
  10.       .flatMap(DataSort::validateColumnsAreComparable);
  11. }

代码示例来源：origin: io.vavr/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(BiFunction<? super T1, ? super T2, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.map(t2 -> f.apply(t1, t2)));
  13. }

代码示例来源：origin: io.vavr/vavr

  1. /**
  2. * Yields a result for elements of the cross product of the underlying Trys.
  3. *
  4. * @param f a function that maps an element of the cross product to a result
  5. * @param <R> type of the resulting {@code Try} elements
  6. * @return an {@code Try} of mapped results
  7. */
  8. public <R> Try<R> yield(Function3<? super T1, ? super T2, ? super T3, ? extends R> f) {
  9.   Objects.requireNonNull(f, "f is null");
  10.   return
  11.     ts1.flatMap(t1 ->
  12.     ts2.flatMap(t2 ->
  13.     ts3.map(t3 -> f.apply(t1, t2, t3))));
  14. }

代码示例来源：origin: martincooper/java-datatable

  1. static <T extends DataRowCollectionBase> Try<T> buildRowCollection(DataTable table, Iterable<DataRow> rows, BiFunction<DataTable, Iterable<DataRow>, T> builder) {
  2.   return validateDataRows(table, rows)
  3.       .flatMap(x -> Try.success(builder.apply(table, rows)));
  4. }

代码示例来源：origin: martincooper/java-datatable

  1. /**
  2.  * Validates the column data.
  3.  *
  4.  * @param columns The columns to validate.
  5.  * @return Returns a Success or Failure.
  6.  */
  7. private static Try<Seq<IDataColumn>> validateColumns(Iterable<IDataColumn> columns) {
  8.   return validateColumnNames(Stream.ofAll(columns))
  9.       .flatMap(DataTable::validateColumnDataLength);
  10. }

代码示例来源：origin: org.assertj/assertj-vavr

  1. /**
  2.  * Call {@link Try#flatMap(Function) flatMap} on the {@code Try} under test, assertions chained afterwards are performed on the {@code Try} resulting from the flatMap call.
  3.  *
  4.  * @param <U> type of a value contained by successful {@link Try} created by {@code mapper} function
  5.  * @param mapper the {@link Function} to use in the {@link Try#flatMap(Function) flatMap} operation.
  6.  *
  7.  * @return a new {@link org.assertj.vavr.api.AbstractTryAssert} for assertions chaining on the flatMap of the Try.
  8.  * @throws AssertionError if the actual {@link Try} is null.
  9.  */
  10. @CheckReturnValue
  11. public <U> AbstractTryAssert<?, U> flatMap(Function<? super VALUE, Try<U>> mapper) {
  12.   isNotNull();
  13.   return VavrAssertions.assertThat(actual.flatMap(mapper));
  14. }

代码示例来源：origin: martincooper/java-datatable

  1. private Try<DataTable> checkColumnsAndBuild(String changeType, Supplier<Try<Vector<IDataColumn>>> columns) {
  2.   // Calculate the new column collection then try and build a DataTable from it.
  3.   Try<DataTable> result = columns.get()
  4.       .flatMap(cols -> DataTable.build(this.table.name(), cols));
  5.   return result.isSuccess()
  6.       ? result
  7.       : error("Error " + changeType + " column at specified index.", result.getCause());
  8. }

代码示例来源：origin: martincooper/java-datatable

  1. /**
  2.    * Returns the row / column value from the specified table.
  3.    *
  4.    * @param dataRow The DataRow to get the table and column from.
  5.    * @return Returns the data if found, as a Try.
  6.    */
  7.   Try<Object> getCellData(DataRow dataRow) {
  8.     return getColumn
  9.         .apply(dataRow.table().columns())
  10.         .flatMap(col -> Try.success(col.valueAt(dataRow.rowIdx())));
  11.   }
  12. }

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