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

Example 6 with LongSummaryStatistics

use of java.util.LongSummaryStatistics in project eclipse-collections by eclipse.

the class InternalArrayIterate method summarizeLong.

/**
 * @since 8.0
 */
public static <T> LongSummaryStatistics summarizeLong(T[] items, int size, LongFunction<? super T> function) {
    LongSummaryStatistics stats = new LongSummaryStatistics();
    for (int i = 0; i < size; i++) {
        T item = items[i];
        stats.accept(function.longValueOf(item));
    }
    return stats;
}

Example 7 with LongSummaryStatistics

use of java.util.LongSummaryStatistics in project eclipse-collections by eclipse.

the class AbstractRichIterableTestCase method summarizeLong.

@Test
public void summarizeLong() {
    RichIterable<Integer> objects = this.newWith(1, 2, 3);
    LongSummaryStatistics expected = objects.summarizeLong(Integer::longValue);
    Assert.assertEquals(6, expected.getSum());
    Assert.assertEquals(3, expected.getCount());
}

Example 8 with LongSummaryStatistics

use of java.util.LongSummaryStatistics in project eclipse-collections by eclipse.

the class RichIterable method summarizeLong.

/**
 * Returns the result of summarizing the value returned from applying the LongFunction to
 * each element of the iterable.
 * <p>
 * <pre>
 * LongSummaryStatistics stats =
 *     Lists.mutable.with(1, 2, 3).summarizeLong(Integer::longValue);
 * </pre>
 *
 * @since 8.0
 */
default LongSummaryStatistics summarizeLong(LongFunction<? super T> function) {
    LongSummaryStatistics stats = new LongSummaryStatistics();
    this.each(each -> stats.accept(function.longValueOf(each)));
    return stats;
}

Example 9 with LongSummaryStatistics

use of java.util.LongSummaryStatistics in project eclipse-collections by eclipse.

the class Bag method summarizeLong.

/**
 * @since 8.0
 */
@Override
default LongSummaryStatistics summarizeLong(LongFunction<? super T> function) {
    LongSummaryStatistics stats = new LongSummaryStatistics();
    this.forEachWithOccurrences((each, occurrences) -> {
        long result = function.longValueOf(each);
        for (int i = 0; i < occurrences; i++) {
            stats.accept(result);
        }
    });
    return stats;
}

Example 10 with LongSummaryStatistics

use of java.util.LongSummaryStatistics in project debezium by debezium.

the class Stopwatch method createStatistics.

private static Statistics createStatistics(LongSummaryStatistics stats) {
    boolean some = stats.getCount() > 0L;
    return new Statistics() {

        @Override
        public long getCount() {
            return stats.getCount();
        }

        @Override
        public Duration getMaximum() {
            return some ? Duration.ofNanos(stats.getMax()) : Duration.ZERO;
        }

        @Override
        public Duration getMinimum() {
            return some ? Duration.ofNanos(stats.getMin()) : Duration.ZERO;
        }

        @Override
        public Duration getTotal() {
            return some ? Duration.ofNanos(stats.getSum()) : Duration.ZERO;
        }

        @Override
        public Duration getAverage() {
            return some ? Duration.ofNanos((long) stats.getAverage()) : Duration.ZERO;
        }

        private String fixedLengthSeconds(Duration duration) {
            double seconds = duration.toNanos() * 1e-9;
            String result = new DecimalFormat("##0.00000").format(seconds) + "s";
            if (result.length() == 8)
                return "  " + result;
            if (result.length() == 9)
                return " " + result;
            return result;
        }

        private String fixedLength(long count) {
            String result = new DecimalFormat("###0").format(count);
            if (result.length() == 1)
                return "   " + result;
            if (result.length() == 2)
                return "  " + result;
            if (result.length() == 3)
                return " " + result;
            return result;
        }

        @Override
        public String toString() {
            StringBuilder sb = new StringBuilder();
            sb.append(fixedLengthSeconds(getTotal()) + " total;");
            sb.append(fixedLength(getCount()) + " samples;");
            sb.append(fixedLengthSeconds(getAverage()) + " avg;");
            sb.append(fixedLengthSeconds(getMinimum()) + " min;");
            sb.append(fixedLengthSeconds(getMaximum()) + " max");
            return sb.toString();
        }
    };
}