Examples with Spliterator java.util.Spliterator used on opensource projects

Example 41 with Spliterator

use of java.util.Spliterator in project streamex by amaembo.

the class DoubleStreamExTest method testBasics.

@Test
public void testBasics() {
    assertFalse(DoubleStreamEx.of(1).isParallel());
    assertTrue(DoubleStreamEx.of(1).parallel().isParallel());
    assertFalse(DoubleStreamEx.of(1).parallel().sequential().isParallel());
    AtomicInteger i = new AtomicInteger();
    try (DoubleStreamEx s = DoubleStreamEx.of(1).onClose(i::incrementAndGet)) {
        assertEquals(1, s.count());
    }
    assertEquals(1, i.get());
    assertEquals(6, IntStreamEx.range(0, 4).asDoubleStream().sum(), 0);
    assertEquals(3, IntStreamEx.range(0, 4).asDoubleStream().max().getAsDouble(), 0);
    assertEquals(0, IntStreamEx.range(0, 4).asDoubleStream().min().getAsDouble(), 0);
    assertEquals(1.5, IntStreamEx.range(0, 4).asDoubleStream().average().getAsDouble(), 0.000001);
    assertEquals(4, IntStreamEx.range(0, 4).asDoubleStream().summaryStatistics().getCount());
    assertArrayEquals(new double[] { 1, 2, 3 }, IntStreamEx.range(0, 5).asDoubleStream().skip(1).limit(3).toArray(), 0.0);
    assertArrayEquals(new double[] { 1, 2, 3 }, DoubleStreamEx.of(3, 1, 2).sorted().toArray(), 0.0);
    assertArrayEquals(new double[] { 1, 2, 3 }, DoubleStreamEx.of(1, 2, 1, 3, 2).distinct().toArray(), 0.0);
    assertArrayEquals(new int[] { 2, 4, 6 }, IntStreamEx.range(1, 4).asDoubleStream().mapToInt(x -> (int) x * 2).toArray());
    assertArrayEquals(new long[] { 2, 4, 6 }, IntStreamEx.range(1, 4).asDoubleStream().mapToLong(x -> (long) x * 2).toArray());
    assertArrayEquals(new double[] { 2, 4, 6 }, IntStreamEx.range(1, 4).asDoubleStream().map(x -> x * 2).toArray(), 0.0);
    assertArrayEquals(new double[] { 1, 3 }, IntStreamEx.range(0, 5).asDoubleStream().filter(x -> x % 2 == 1).toArray(), 0.0);
    assertEquals(6.0, DoubleStreamEx.of(1.0, 2.0, 3.0).reduce(Double::sum).getAsDouble(), 0.0);
    assertEquals(Long.MAX_VALUE, LongStreamEx.rangeClosed(1, Long.MAX_VALUE).asDoubleStream().spliterator().getExactSizeIfKnown());
    assertArrayEquals(new double[] { 4, 2, 0, -2, -4 }, DoubleStreamEx.zip(new double[] { 5, 4, 3, 2, 1 }, new double[] { 1, 2, 3, 4, 5 }, (a, b) -> a - b).toArray(), 0.0);
    assertEquals("1.0; 0.5; 0.25; 0.125", DoubleStreamEx.of(1.0, 0.5, 0.25, 0.125).mapToObj(String::valueOf).joining("; "));
    List<Double> list = new ArrayList<>();
    DoubleStreamEx.of(1.0, 0.5, 0.25, 0.125).forEach(list::add);
    assertEquals(Arrays.asList(1.0, 0.5, 0.25, 0.125), list);
    list = new ArrayList<>();
    DoubleStreamEx.of(1.0, 0.5, 0.25, 0.125).parallel().forEachOrdered(list::add);
    assertEquals(Arrays.asList(1.0, 0.5, 0.25, 0.125), list);
    assertFalse(DoubleStreamEx.of(1.0, 2.0, 2.5).anyMatch(x -> x < 0.0));
    assertTrue(DoubleStreamEx.of(1.0, 2.0, 2.5).anyMatch(x -> x >= 2.5));
    assertTrue(DoubleStreamEx.of(1.0, 2.0, 2.5).noneMatch(x -> x < 0.0));
    assertFalse(DoubleStreamEx.of(1.0, 2.0, 2.5).noneMatch(x -> x >= 2.5));
    assertEquals(5.0, DoubleStreamEx.of(1.0, 2.0, 2.5).reduce(1, (a, b) -> a * b), 0.0);
    assertTrue(DoubleStreamEx.of(1, 2, 3).spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertFalse(DoubleStreamEx.of(1, 2, 3).unordered().spliterator().hasCharacteristics(Spliterator.ORDERED));
    OfDouble iterator = DoubleStreamEx.of(1.0, 2.0, 3.0).iterator();
    assertEquals(1.0, iterator.next(), 0.0);
    assertEquals(2.0, iterator.next(), 0.0);
    assertEquals(3.0, iterator.next(), 0.0);
    assertFalse(iterator.hasNext());
}

Example 42 with Spliterator

use of java.util.Spliterator in project streamex by amaembo.

the class DoubleStreamExTest method testDropWhile.

@Test
public void testDropWhile() {
    assertArrayEquals(new double[] { 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, LongStreamEx.range(100).asDoubleStream().dropWhile(i -> i % 10 < 5).limit(10).toArray(), 0.0);
    assertEquals(100, LongStreamEx.range(100).asDoubleStream().sorted().dropWhile(i -> i % 10 < 0).count());
    assertEquals(0, LongStreamEx.range(100).asDoubleStream().dropWhile(i -> i % 10 < 10).count());
    assertEquals(OptionalDouble.of(0), LongStreamEx.range(100).asDoubleStream().dropWhile(i -> i % 10 < 0).findFirst());
    assertEquals(OptionalDouble.empty(), LongStreamEx.range(100).asDoubleStream().dropWhile(i -> i % 10 < 10).findFirst());
    java.util.Spliterator.OfDouble spltr = LongStreamEx.range(100).asDoubleStream().dropWhile(i -> i % 10 < 1).spliterator();
    assertTrue(spltr.tryAdvance((double x) -> assertEquals(1, x, 0.0)));
    Builder builder = DoubleStream.builder();
    spltr.forEachRemaining(builder);
    assertArrayEquals(LongStreamEx.range(2, 100).asDoubleStream().toArray(), builder.build().toArray(), 0.0);
}

Example 43 with Spliterator

use of java.util.Spliterator in project streamex by amaembo.

the class IntStreamExTest method testBasics.

@Test
public void testBasics() {
    assertFalse(IntStreamEx.of(1).isParallel());
    assertTrue(IntStreamEx.of(1).parallel().isParallel());
    assertFalse(IntStreamEx.of(1).parallel().sequential().isParallel());
    AtomicInteger i = new AtomicInteger();
    try (IntStreamEx s = IntStreamEx.of(1).onClose(i::incrementAndGet)) {
        assertEquals(1, s.count());
    }
    assertEquals(1, i.get());
    assertEquals(6, IntStreamEx.range(0, 4).sum());
    assertEquals(3, IntStreamEx.range(0, 4).max().getAsInt());
    assertEquals(0, IntStreamEx.range(0, 4).min().getAsInt());
    assertEquals(1.5, IntStreamEx.range(0, 4).average().getAsDouble(), 0.000001);
    assertEquals(4, IntStreamEx.range(0, 4).summaryStatistics().getCount());
    assertArrayEquals(new int[] { 1, 2, 3 }, IntStreamEx.range(0, 5).skip(1).limit(3).toArray());
    assertArrayEquals(new int[] { 1, 2, 3 }, IntStreamEx.of(3, 1, 2).sorted().toArray());
    assertArrayEquals(new int[] { 1, 2, 3 }, IntStreamEx.of(1, 2, 1, 3, 2).distinct().toArray());
    assertArrayEquals(new int[] { 2, 4, 6 }, IntStreamEx.range(1, 4).map(x -> x * 2).toArray());
    assertArrayEquals(new long[] { 2, 4, 6 }, IntStreamEx.range(1, 4).mapToLong(x -> x * 2).toArray());
    assertArrayEquals(new double[] { 2, 4, 6 }, IntStreamEx.range(1, 4).mapToDouble(x -> x * 2).toArray(), 0.0);
    assertArrayEquals(new int[] { 1, 3 }, IntStreamEx.range(0, 5).filter(x -> x % 2 == 1).toArray());
    assertEquals(6, IntStreamEx.of(1, 2, 3).reduce(Integer::sum).getAsInt());
    assertEquals(Integer.MAX_VALUE, IntStreamEx.rangeClosed(1, Integer.MAX_VALUE).spliterator().getExactSizeIfKnown());
    assertTrue(IntStreamEx.of(1, 2, 3).spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertFalse(IntStreamEx.of(1, 2, 3).unordered().spliterator().hasCharacteristics(Spliterator.ORDERED));
    OfInt iterator = IntStreamEx.of(1, 2, 3).iterator();
    assertEquals(1, iterator.nextInt());
    assertEquals(2, iterator.nextInt());
    assertEquals(3, iterator.nextInt());
    assertFalse(iterator.hasNext());
    List<Integer> list = new ArrayList<>();
    IntStreamEx.range(10).parallel().forEachOrdered(list::add);
    assertEquals(Arrays.asList(0, 1, 2, 3, 4, 5, 6, 7, 8, 9), list);
    assertTrue(IntStreamEx.empty().noneMatch(x -> true));
    assertFalse(IntStreamEx.of(1).noneMatch(x -> true));
    assertTrue(IntStreamEx.of(1).noneMatch(x -> false));
}

Example 44 with Spliterator

use of java.util.Spliterator in project streamex by amaembo.

the class LongStreamExTest method testDropWhile.

@Test
public void testDropWhile() {
    assertArrayEquals(new long[] { 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, LongStreamEx.range(100).dropWhile(i -> i % 10 < 5).limit(10).toArray());
    assertEquals(100, LongStreamEx.range(100).dropWhile(i -> i % 10 < 0).count());
    assertEquals(0, LongStreamEx.range(100).dropWhile(i -> i % 10 < 10).count());
    assertEquals(OptionalLong.of(0), LongStreamEx.range(100).dropWhile(i -> i % 10 < 0).findFirst());
    assertEquals(OptionalLong.empty(), LongStreamEx.range(100).dropWhile(i -> i % 10 < 10).findFirst());
    java.util.Spliterator.OfLong spltr = LongStreamEx.range(100).dropWhile(i -> i % 10 < 1).spliterator();
    assertTrue(spltr.tryAdvance((long x) -> assertEquals(1, x)));
    Builder builder = LongStream.builder();
    spltr.forEachRemaining(builder);
    assertArrayEquals(LongStreamEx.range(2, 100).toArray(), builder.build().toArray());
}

Example 45 with Spliterator

use of java.util.Spliterator in project myexcel by liaochong.

the class DefaultExcelReader method getAllPictures.

private void getAllPictures(Sheet sheet) {
    if (sheet instanceof XSSFSheet) {
        isXSSFSheet = true;
        XSSFDrawing xssfDrawing = ((XSSFSheet) sheet).getDrawingPatriarch();
        if (xssfDrawing == null) {
            return;
        }
        xssfPicturesMap = xssfDrawing.getShapes().stream().filter(s -> s instanceof XSSFPicture).map(s -> (XSSFPicture) s).collect(Collectors.toMap(s -> {
            XSSFClientAnchor anchor = (XSSFClientAnchor) s.getAnchor();
            return anchor.getRow1() + "_" + anchor.getCol1();
        }, s -> s));
    } else if (sheet instanceof HSSFSheet) {
        HSSFPatriarch hssfPatriarch = ((HSSFSheet) sheet).getDrawingPatriarch();
        if (hssfPatriarch == null) {
            return;
        }
        Spliterator<HSSFShape> spliterator = hssfPatriarch.spliterator();
        hssfPictureMap = new HashMap<>();
        spliterator.forEachRemaining(shape -> {
            if (shape instanceof HSSFPicture) {
                HSSFPicture picture = (HSSFPicture) shape;
                HSSFAnchor anchor = picture.getAnchor();
                if (anchor instanceof HSSFClientAnchor) {
                    int row = ((HSSFClientAnchor) anchor).getRow1();
                    int col = ((HSSFClientAnchor) anchor).getCol1();
                    hssfPictureMap.put(row + "_" + col, picture);
                }
            }
        });
    }
}