amaembo’s gists

amaembo / CharsTest.java

Created June 27, 2015 02:19

CharsTest: comparison of different ways to create the stream of chars from String

	import java.util.concurrent.TimeUnit;
	import java.util.stream.*;
	import java.util.*;
	import java.nio.*;

	import org.openjdk.jmh.infra.Blackhole;
	import org.openjdk.jmh.annotations.*;

	@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
	@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)

amaembo / MegamorphTest.java

Last active August 29, 2015 14:24

	package org.sample;

	import java.util.*;
	import java.util.concurrent.TimeUnit;
	import java.util.stream.*;
	import java.util.function.*;

	import org.openjdk.jmh.infra.Blackhole;
	import org.openjdk.jmh.annotations.*;

amaembo / Limit.java

Last active August 29, 2015 14:24

	import java.util.*;
	import java.util.stream.*;
	import static java.util.stream.Collectors.*;
	import java.util.concurrent.TimeUnit;

	import org.openjdk.jmh.infra.Blackhole;
	import org.openjdk.jmh.annotations.*;

	@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
	@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)

amaembo / IteratorTest.java

Last active August 29, 2015 14:24

Unknown size iterator optimization

	package org.sample;

	import java.util.concurrent.TimeUnit;
	import java.util.stream.*;
	import java.util.function.*;
	import java.util.*;

	import org.openjdk.jmh.infra.Blackhole;
	import org.openjdk.jmh.annotations.*;

amaembo / ConstantSpliterator.java

Last active August 29, 2015 14:26

	import java.util.Spliterator;
	import java.util.Objects;
	import java.util.function.Consumer;

	class ConstantSpliterator<T> implements Spliterator<T> {
	long remaining;
	T value;

	public ConstantSpliterator(long remaining, T value) {
	this.remaining = remaining;

amaembo / MyBenchmark.java

Last active August 29, 2015 14:26

	import java.util.*;
	import java.util.stream.*;
	import java.util.concurrent.TimeUnit;

	import org.openjdk.jmh.infra.Blackhole;
	import org.openjdk.jmh.annotations.*;

	@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
	@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
	@BenchmarkMode(Mode.AverageTime)

amaembo / AvgTest.java

Last active August 29, 2015 14:27

	import static java.util.concurrent.TimeUnit.*;
	import static java.util.stream.Collectors.*;
	import java.util.*;

	import org.openjdk.jmh.infra.Blackhole;
	import org.openjdk.jmh.annotations.*;

	@Warmup(iterations = 5, time = 1, timeUnit = SECONDS)
	@Measurement(iterations = 15, time = 1, timeUnit = SECONDS)
	@BenchmarkMode(Mode.AverageTime)

amaembo / AverageLong.java

Last active August 29, 2015 14:27

	import java.math.BigDecimal;
	import java.math.BigInteger;
	import java.math.MathContext;
	import java.nio.ByteBuffer;
	import java.nio.ByteOrder;
	import java.util.function.ToIntFunction;
	import java.util.function.ToLongFunction;
	import java.util.stream.Collector;

	final class AverageLong {

amaembo / SplitTest.java

Created August 26, 2015 12:50

In reply to http://ru.stackoverflow.com/a/445008/183331

	import java.util.concurrent.TimeUnit;
	import java.util.regex.Pattern;

	import org.openjdk.jmh.infra.Blackhole;
	import org.openjdk.jmh.annotations.*;

	@Warmup(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
	@Measurement(iterations = 10, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
	@BenchmarkMode(Mode.AverageTime)
	@OutputTimeUnit(TimeUnit.MICROSECONDS)

amaembo / collect.java

Created August 30, 2015 10:51

Collect (see http://stackoverflow.com/a/32291089/4856258 )

	tokens.stream().collect(() -> new ArrayList<String>(), (l, e) -> {
	if(l.isEmpty() \|\| !l.get(l.size()-1).toUpperCase().endsWith("STOP"))
	l.add(e);
	}, (l1, l2) -> {
	if(l1.isEmpty() \|\| !l1.get(l1.size()-1).toUpperCase().endsWith("STOP"))
	l1.addAll(l2);
	});

Tagir Valeev amaembo