Uses of Interface
java.util.function.ToDoubleFunction
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Packages that use ToDoubleFunction Package Description java.util Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).java.util.concurrent Utility classes commonly useful in concurrent programming.java.util.stream Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections. -
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Uses of ToDoubleFunction in java.util
Methods in java.util with parameters of type ToDoubleFunction Modifier and Type Method and Description static <T> Comparator<T>Comparator. comparingDouble(ToDoubleFunction<? super T> keyExtractor)Accepts a function that extracts adoublesort key from a typeT, and returns aComparator<T>that compares by that sort key.default Comparator<T>Comparator. thenComparingDouble(ToDoubleFunction<? super T> keyExtractor)Returns a lexicographic-order comparator with a function that extracts adoublesort key. -
Uses of ToDoubleFunction in java.util.concurrent
Methods in java.util.concurrent with parameters of type ToDoubleFunction Modifier and Type Method and Description doubleConcurrentHashMap. reduceEntriesToDouble(long parallelismThreshold, ToDoubleFunction<Map.Entry<K,V>> transformer, double basis, DoubleBinaryOperator reducer)Returns the result of accumulating the given transformation of all entries using the given reducer to combine values, and the given basis as an identity value.doubleConcurrentHashMap. reduceKeysToDouble(long parallelismThreshold, ToDoubleFunction<? super K> transformer, double basis, DoubleBinaryOperator reducer)Returns the result of accumulating the given transformation of all keys using the given reducer to combine values, and the given basis as an identity value.doubleConcurrentHashMap. reduceValuesToDouble(long parallelismThreshold, ToDoubleFunction<? super V> transformer, double basis, DoubleBinaryOperator reducer)Returns the result of accumulating the given transformation of all values using the given reducer to combine values, and the given basis as an identity value. -
Uses of ToDoubleFunction in java.util.stream
Methods in java.util.stream with parameters of type ToDoubleFunction Modifier and Type Method and Description static <T> Collector<T,?,Double>Collectors. averagingDouble(ToDoubleFunction<? super T> mapper)Returns aCollectorthat produces the arithmetic mean of a double-valued function applied to the input elements.DoubleStreamStream. mapToDouble(ToDoubleFunction<? super T> mapper)Returns aDoubleStreamconsisting of the results of applying the given function to the elements of this stream.static <T> Collector<T,?,DoubleSummaryStatistics>Collectors. summarizingDouble(ToDoubleFunction<? super T> mapper)Returns aCollectorwhich applies andouble-producing mapping function to each input element, and returns summary statistics for the resulting values.static <T> Collector<T,?,Double>Collectors. summingDouble(ToDoubleFunction<? super T> mapper)Returns aCollectorthat produces the sum of a double-valued function applied to the input elements.
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