Java DoubleToLongFunction类代码示例

本文整理汇总了Java中java.util.function.DoubleToLongFunction类的典型用法代码示例。如果您正苦于以下问题：Java DoubleToLongFunction类的具体用法？Java DoubleToLongFunction怎么用？Java DoubleToLongFunction使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。

DoubleToLongFunction类属于java.util.function包，在下文中一共展示了DoubleToLongFunction类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: mapToLong

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
@Override
public final LongStream mapToLong(DoubleToLongFunction mapper) {
    Objects.requireNonNull(mapper);
    return new LongPipeline.StatelessOp<Double>(this, StreamShape.DOUBLE_VALUE,
                                                StreamOpFlag.NOT_SORTED | StreamOpFlag.NOT_DISTINCT) {
        @Override
        Sink<Double> opWrapSink(int flags, Sink<Long> sink) {
            return new Sink.ChainedDouble<Long>(sink) {
                @Override
                public void accept(double t) {
                    downstream.accept(mapper.applyAsLong(t));
                }
            };
        }
    };
}

开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:17，代码来源:DoublePipeline.java

示例2: shouldRequireNonNullCache

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
@SuppressWarnings(CompilerWarnings.UNUSED)
public void shouldRequireNonNullCache() {
    // given
    final ConcurrentMap<Double, Long> cache = null;
    final DoubleToLongFunction function = input -> 123;
    final DoubleFunction<Double> keyFunction = Double::valueOf;

    // when
    thrown.expect(NullPointerException.class);
    thrown.expectMessage("Provide an empty map instead of NULL.");

    // then
    new ConcurrentMapBasedDoubleToLongFunctionMemoizer<>(cache, keyFunction, function);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:19，代码来源:ConcurrentMapBasedDoubleToLongFunctionMemoizerTest.java

示例3: shouldRequireNonNullFunction

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
@SuppressWarnings(CompilerWarnings.UNUSED)
public void shouldRequireNonNullFunction() {
    // given
    final ConcurrentMap<Double, Long> cache = new ConcurrentHashMap<>();
    final DoubleToLongFunction function = null;
    final DoubleFunction<Double> keyFunction = Double::valueOf;

    // when
    thrown.expect(NullPointerException.class);
    thrown.expectMessage(
            "Cannot memoize a NULL DoubleToLongFunction - provide an actual DoubleToLongFunction to fix this.");

    // then
    new ConcurrentMapBasedDoubleToLongFunctionMemoizer<>(cache, keyFunction, function);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:20，代码来源:ConcurrentMapBasedDoubleToLongFunctionMemoizerTest.java

示例4: shouldUseSetCacheKeyAndValue

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldUseSetCacheKeyAndValue() {
    // given
    final ConcurrentMap<Double, Long> cache = new ConcurrentHashMap<>();
    final DoubleToLongFunction function = input -> 123;
    final DoubleFunction<Double> keyFunction = Double::valueOf;

    // when
    final ConcurrentMapBasedDoubleToLongFunctionMemoizer<Double> memoizer = new ConcurrentMapBasedDoubleToLongFunctionMemoizer<>(
            cache, keyFunction, function);

    // then
    memoizer.applyAsLong(123D);
    Assert.assertFalse("Cache is still empty after memoization", memoizer.viewCacheForTest().isEmpty());
    Assert.assertEquals("Memoization key does not match expectations", 123D,
            memoizer.viewCacheForTest().keySet().iterator().next().doubleValue(), 0.0D);
    Assert.assertEquals("Memoization value does not match expectations", 123L,
            memoizer.viewCacheForTest().values().iterator().next().longValue());
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:23，代码来源:ConcurrentMapBasedDoubleToLongFunctionMemoizerTest.java

示例5: shouldUseCallWrappedFunction

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldUseCallWrappedFunction() {
    // given
    final ConcurrentMap<Double, Long> cache = new ConcurrentHashMap<>();
    final DoubleToLongFunction function = Mockito.mock(DoubleToLongFunction.class);
    final DoubleFunction<Double> keyFunction = Double::valueOf;

    // when
    final ConcurrentMapBasedDoubleToLongFunctionMemoizer<Double> memoizer = new ConcurrentMapBasedDoubleToLongFunctionMemoizer<>(
            cache, keyFunction, function);

    // then
    memoizer.applyAsLong(123D);
    Mockito.verify(function).applyAsLong(123D);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:19，代码来源:ConcurrentMapBasedDoubleToLongFunctionMemoizerTest.java

示例6: shouldMemoizeDoubleToLongFunctionWithKeyFunction

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldMemoizeDoubleToLongFunctionWithKeyFunction() {
    // given
    final DoubleToLongFunction function = a -> 123L;
    final DoubleFunction<String> keyFunction = a -> "key";

    // when
    final DoubleToLongFunction memoize = CaffeineMemoize.doubleToLongFunction(function, keyFunction);

    // then
    Assert.assertNotNull("Memoized DoubleToLongFunction is NULL", memoize);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:16，代码来源:CaffeineMemoizeCustomKeyTest.java

示例7: shouldMemoizeDoubleToLongFunction

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldMemoizeDoubleToLongFunction() {
    // given
    final DoubleToLongFunction function = a -> 123L;

    // when
    final DoubleToLongFunction memoize = CaffeineMemoize.doubleToLongFunction(function);

    // then
    Assert.assertNotNull("Memoized DoubleToLongFunction is NULL", memoize);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:15，代码来源:CaffeineMemoizeDefaultsTest.java

示例8: shouldMemoizeDoubleToLongFunctionWithLambda

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldMemoizeDoubleToLongFunctionWithLambda() {
    // given

    // when
    final DoubleToLongFunction memoize = CaffeineMemoize.doubleToLongFunction(a -> 123L);

    // then
    Assert.assertNotNull("Memoized DoubleToLongFunction is NULL", memoize);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:14，代码来源:CaffeineMemoizeLambdaTest.java

示例9: GuavaCacheBasedDoubleToLongFunctionMemoizer

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
GuavaCacheBasedDoubleToLongFunctionMemoizer(
        final Cache<KEY, Long> cache,
        final DoubleFunction<KEY> keyFunction,
        final DoubleToLongFunction function) {
    super(cache);
    this.keyFunction = keyFunction;
    this.function = function;
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:9，代码来源:GuavaCacheBasedDoubleToLongFunctionMemoizer.java

示例10: shouldMemoizeDoubleToLongFunctionWithKeyFunction

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldMemoizeDoubleToLongFunctionWithKeyFunction() {
    // given
    final DoubleToLongFunction function = a -> 123;
    final DoubleFunction<Double> keyFunction = Double::valueOf;

    // when
    final DoubleToLongFunction memoize = GuavaMemoize.doubleToLongFunction(function, keyFunction);

    // then
    Assert.assertNotNull("Memoized DoubleToLongFunction is NULL", memoize);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:16，代码来源:GuavaMemoizeCustomKeyTest.java

示例11: shouldAcceptLoadingCache

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldAcceptLoadingCache() {
    // given
    final DoubleToLongFunction function = a -> 123L;
    final DoubleFunction<Double> keyFunction = Double::valueOf;
    final Cache<Double, Long> cache = CacheBuilder.newBuilder().build();

    // when
    final GuavaCacheBasedDoubleToLongFunctionMemoizer<Double> memoizer = new GuavaCacheBasedDoubleToLongFunctionMemoizer<>(
            cache, keyFunction, function);

    // then
    Assert.assertNotNull(memoizer);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:18，代码来源:GuavaCacheBasedDoubleToLongFunctionMemoizerTest.java

示例12: shouldTransformInput

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldTransformInput() {
    // given
    final DoubleToLongFunction function = a -> 123L;
    final DoubleFunction<Double> keyFunction = Double::valueOf;
    final Cache<Double, Long> cache = CacheBuilder.newBuilder().build();

    // when
    final GuavaCacheBasedDoubleToLongFunctionMemoizer<Double> memoizer = new GuavaCacheBasedDoubleToLongFunctionMemoizer<>(
            cache, keyFunction, function);

    // then
    Assert.assertEquals("Memoized value does not match expectation", 123L, memoizer.applyAsLong(789D));
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:18，代码来源:GuavaCacheBasedDoubleToLongFunctionMemoizerTest.java

示例13: shouldMemoizeDoubleToLongFunctionWithLambda

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldMemoizeDoubleToLongFunctionWithLambda() {
    // given

    // when
    final DoubleToLongFunction memoize = GuavaMemoize.doubleToLongFunction(a -> 123);

    // then
    Assert.assertNotNull("Memoized DoubleToLongFunction is NULL", memoize);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:14，代码来源:GuavaMemoizeLambdaTest.java

示例14: shouldMemoizeDoubleToLongFunction

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
/**
*
*/
@Test
public void shouldMemoizeDoubleToLongFunction() {
    // given
    final DoubleToLongFunction function = a -> 123;

    // when
    final DoubleToLongFunction memoize = GuavaMemoize.doubleToLongFunction(function);

    // then
    Assert.assertNotNull("Memoized DoubleToLongFunction is NULL", memoize);
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:15，代码来源:GuavaMemoizeDefaultsTest.java

示例15: JCacheBasedDoubleToLongFunctionMemoizer

import java.util.function.DoubleToLongFunction; //导入依赖的package包/类
JCacheBasedDoubleToLongFunctionMemoizer(
        final Cache<KEY, Long> cache,
        final DoubleFunction<KEY> keyFunction,
        final DoubleToLongFunction biFunction) {
    super(cache);
    this.keyFunction = keyFunction;
    this.biFunction = biFunction;
}

开发者ID:sebhoss，项目名称:memoization.java，代码行数:9，代码来源:JCacheBasedDoubleToLongFunctionMemoizer.java

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