Java Code Examples for java.util.stream.IntStream#concat()

The following examples show how to use java.util.stream.IntStream#concat() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
@Override
public MetaData getGeneratedMetaData() throws OperatorException {
	ExampleSetMetaData emd = new ExampleSetMetaData();
	emd.addAttribute(new AttributeMetaData("label", Ontology.NOMINAL, Attributes.LABEL_NAME));
	emd.setNumberOfExamples(getParameterAsInt(PARAMETER_NUMBER_EXAMPLES));
	int desiredNumberOfAttributes = getParameterAsInt(PARAMETER_NUMBER_ATTRIBUTES);
	double mean = getParameterAsDouble(PARAMETER_SPARSE_FRACTION);
	IntStream attributeIndices;
	if (desiredNumberOfAttributes <= MAX_METADATA_ATTRIBUTES) {
		// all attributes
		attributeIndices = IntStream.range(1, desiredNumberOfAttributes);
	} else {
		// first ten and last ten
		attributeIndices = IntStream.concat(IntStream.rangeClosed(1, MAX_METADATA_ATTRIBUTES/2),
				IntStream.rangeClosed(desiredNumberOfAttributes - MAX_METADATA_ATTRIBUTES/2 + 1, desiredNumberOfAttributes));
	}
	attributeIndices.mapToObj(i -> new AttributeMetaData("att" + i, null, Ontology.REAL, new Range(0, 1)))
			.peek(amd -> amd.setMean(new MDReal(mean))).forEach(emd::addAttribute);
	return emd;
}
 
Example 2
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 3
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 4
Source Project: jdk8u60   File: ConcatTest.java    License: GNU General Public License v2.0 5 votes vote down vote up
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 5
Source Project: teku   File: Utils.java    License: Apache License 2.0 5 votes vote down vote up
private static List<ByteBuf> shiftedSlices(int shift, Bytes... chunks) {
  AtomicInteger sum = new AtomicInteger(0);
  IntStream pos =
      IntStream.concat(
          IntStream.of(0), Arrays.stream(chunks).mapToInt(Bytes::size).map(sum::addAndGet));
  if (shift > 0) {
    pos = pos.limit(chunks.length);
  } else {
    pos = pos.skip(1);
  }
  pos = pos.map(p -> p + shift).map(p -> Math.max(p, 0));
  return slice(toByteBuf(chunks), pos.toArray());
}
 
Example 6
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 7
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 8
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 9
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 10
Source Project: hottub   File: ConcatTest.java    License: GNU General Public License v2.0 5 votes vote down vote up
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 11
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 12
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 13
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 14
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 15
private void assertIntConcat(Stream<Integer> s1, Stream<Integer> s2, boolean parallel, boolean ordered) {
    IntStream result = IntStream.concat(s1.mapToInt(Integer::intValue),
                                        s2.mapToInt(Integer::intValue));
    assertEquals(result.isParallel(), parallel);
    assertConcatContent(result.spliterator(), ordered,
                        expected.stream().mapToInt(Integer::intValue).spliterator());
}
 
Example 16
Source Project: TweetwallFX   File: Tweet.java    License: MIT License 5 votes vote down vote up
public String get() {
    if (entriesToRemove.isEmpty()) {
        return tweet.getText();
    }

    IntStream filteredIndexes = IntStream.empty();
    for (TweetEntry tweetEntry : entriesToRemove) {
        final IntStream nextFilter;

        if (tweetEntry.getStart() == tweetEntry.getEnd()) {
            nextFilter = IntStream.of(tweetEntry.getStart());
        } else {
            nextFilter = IntStream.range(tweetEntry.getStart(), tweetEntry.getEnd());
        }

        filteredIndexes = IntStream.concat(filteredIndexes, nextFilter);
    }

    final Set<Integer> indexesToFilterOut = filteredIndexes.boxed().collect(toCollection(TreeSet::new));
    final int[] chars = tweet.getText().chars().toArray();
    final int[] filteredChars = IntStream.range(0, chars.length)
            .filter(i -> !indexesToFilterOut.contains(i))
            .map(i -> chars[i])
            .toArray();

    return new String(filteredChars, 0, filteredChars.length)
            .replaceAll("  *", " ")
            .trim();
}
 
Example 17
@Test
public void intstream_concat() {

	IntStream first = IntStream.builder().add(10).build();
	IntStream second = IntStream.builder().add(10).build();

	IntStream third = IntStream.concat(first, second);

	assertEquals(20, third.sum());
}
 
Example 18
Source Project: streamex   File: IntStreamEx.java    License: Apache License 2.0 2 votes vote down vote up
/**
 * Returns a new {@code IntStreamEx} which is a concatenation of this stream
 * and the stream containing supplied values
 * 
 * <p>
 * This is a <a href="package-summary.html#StreamOps">quasi-intermediate
 * operation</a>.
 * 
 * @param values the values to append to the stream
 * @return the new stream
 */
public IntStreamEx append(int... values) {
    if (values.length == 0)
        return this;
    return new IntStreamEx(IntStream.concat(stream(), IntStream.of(values)), context);
}
 
Example 19
Source Project: streamex   File: IntStreamEx.java    License: Apache License 2.0 2 votes vote down vote up
/**
 * Creates a lazily concatenated stream whose elements are all the elements
 * of this stream followed by all the elements of the other stream. The
 * resulting stream is ordered if both of the input streams are ordered, and
 * parallel if either of the input streams is parallel. When the resulting
 * stream is closed, the close handlers for both input streams are invoked.
 *
 * @param other the other stream
 * @return this stream appended by the other stream
 * @see IntStream#concat(IntStream, IntStream)
 */
public IntStreamEx append(IntStream other) {
    return new IntStreamEx(IntStream.concat(stream(), other), context.combine(other));
}
 
Example 20
Source Project: streamex   File: IntStreamEx.java    License: Apache License 2.0 2 votes vote down vote up
/**
 * Returns a new {@code IntStreamEx} which is a concatenation of the stream
 * containing supplied values and this stream
 * 
 * <p>
 * This is a <a href="package-summary.html#StreamOps">quasi-intermediate
 * operation</a>.
 * 
 * @param values the values to prepend to the stream
 * @return the new stream
 */
public IntStreamEx prepend(int... values) {
    if (values.length == 0)
        return this;
    return new IntStreamEx(IntStream.concat(IntStream.of(values), stream()), context);
}