关于函数式FunctionalInterface介绍的文章

内容简介：简要说明：* BiConsumer<T, U>

## 关于函数式FunctionalInterface介绍的文章

* Java8 — 函数式接口@FunctionalInterface及default关键字

JDK 8里面的FunctionalInterface列表

简要说明：

* BiConsumer<T, U>

/**
     * Performs this operation on the given arguments.
     *
     * @param t the first input argument
     * @param u the second input argument
     */
    void accept(T t, U u);

BiFunction<T, U, R>

/**
     * Applies this function to the given arguments.
     *
     * @param t the first function argument
     * @param u the second function argument
     * @return the function result
     */
    R apply(T t, U u);

BinaryOperator extends BiFunction<T,T,T>

public static <T> BinaryOperator<T> minBy(
    Comparator<? super T> comparator) {
        Objects.requireNonNull(comparator);
        return (a, b) -> comparator.compare(a, b) <= 0 ? a : b;
    }

BiPredicate<T, U>

/**
     * Evaluates this predicate on the given arguments.
     *
     * @param t the first input argument
     * @param u the second input argument
     * @return {@code true} if the input arguments match the predicate,
     * otherwise {@code false}
     */
    boolean test(T t, U u);

BooleanSupplier

/**
     * Gets a result.
     *
     * @return a result
     */
    boolean getAsBoolean();

Consumer

/**
     * Performs this operation on the given argument.
     *
     * @param t the input argument
     */
    void accept(T t);

DoubleBinaryOperator

/**
     * Applies this operator to the given operands.
     *
     * @param left the first operand
     * @param right the second operand
     * @return the operator result
     */
    double applyAsDouble(double left, double right);

DoubleConsumer

/**
     * Performs this operation on the given argument.
     *
     * @param value the input argument
     */
    void accept(double value);

DoubleFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    R apply(double value);

DoublePredicate

/**
     * Evaluates this predicate on the given argument.
     *
     * @param value the input argument
     * @return {@code true} if the input argument matches the predicate,
     * otherwise {@code false}
     */
    boolean test(double value);

DoubleSupplier

/**
     * Gets a result.
     *
     * @return a result
     */
    double getAsDouble();

DoubleToIntFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    int applyAsInt(double value);

DoubleToLongFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    long applyAsLong(double value);

DoubleUnaryOperator

/**
     * Applies this operator to the given operand.
     *
     * @param operand the operand
     * @return the operator result
     */
    double applyAsDouble(double operand);

Function<T, R>

/**
     * Applies this function to the given argument.
     *
     * @param t the function argument
     * @return the function result
     */
    R apply(T t);

IntBinaryOperator

/**
     * Applies this operator to the given operands.
     *
     * @param left the first operand
     * @param right the second operand
     * @return the operator result
     */
    int applyAsInt(int left, int right);

IntConsumer

/**
     * Performs this operation on the given argument.
     *
     * @param value the input argument
     */
    void accept(int value);

IntFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    R apply(int value);

IntPredicate

/**
     * Evaluates this predicate on the given argument.
     *
     * @param value the input argument
     * @return {@code true} if the input argument matches the predicate,
     * otherwise {@code false}
     */
    boolean test(int value);

IntSupplier

/**
     * Gets a result.
     *
     * @return a result
     */
    int getAsInt();

IntToDoubleFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    double applyAsDouble(int value);

IntToLongFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    long applyAsLong(int value);

IntUnaryOperator

/**
     * Applies this operator to the given operand.
     *
     * @param operand the operand
     * @return the operator result
     */
    int applyAsInt(int operand);

LongBinaryOperator

/**
     * Applies this operator to the given operands.
     *
     * @param left the first operand
     * @param right the second operand
     * @return the operator result
     */
    long applyAsLong(long left, long right);

LongConsumer

/**
     * Performs this operation on the given argument.
     *
     * @param value the input argument
     */
    void accept(long value);

LongFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    R apply(long value);

LongPredicate

/**
     * Evaluates this predicate on the given argument.
     *
     * @param value the input argument
     * @return {@code true} if the input argument matches the predicate,
     * otherwise {@code false}
     */
    boolean test(long value);

LongSupplier

/**
     * Gets a result.
     *
     * @return a result
     */
    long getAsLong();

LongToDoubleFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    double applyAsDouble(long value);

LongToIntFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    int applyAsInt(long value);

LongUnaryOperator

/**
     * Applies this operator to the given operand.
     *
     * @param operand the operand
     * @return the operator result
     */
    long applyAsLong(long operand);

ObjDoubleConsumer

/**
     * Performs this operation on the given arguments.
     *
     * @param t the first input argument
     * @param value the second input argument
     */
    void accept(T t, double value);

ObjIntConsumer

/**
     * Performs this operation on the given arguments.
     *
     * @param t the first input argument
     * @param value the second input argument
     */
    void accept(T t, int value);

ObjLongConsumer

/**
     * Performs this operation on the given arguments.
     *
     * @param t the first input argument
     * @param value the second input argument
     */
    void accept(T t, long value);

Predicate

/**
     * Evaluates this predicate on the given argument.
     *
     * @param t the input argument
     * @return {@code true} if the input argument matches the predicate,
     * otherwise {@code false}
     */
    boolean test(T t);

Supplier

/**
     * Gets a result.
     *
     * @return a result
     */
    T get();

ToDoubleBiFunction<T, U>

/**
     * Applies this function to the given arguments.
     *
     * @param t the first function argument
     * @param u the second function argument
     * @return the function result
     */
    double applyAsDouble(T t, U u);

ToDoubleFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    double applyAsDouble(T value);

ToIntBiFunction<T, U>

/**
     * Applies this function to the given arguments.
     *
     * @param t the first function argument
     * @param u the second function argument
     * @return the function result
     */
    int applyAsInt(T t, U u);

ToIntFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    int applyAsInt(T value);

ToLongBiFunction<T, U>

/**
     * Applies this function to the given arguments.
     *
     * @param t the first function argument
     * @param u the second function argument
     * @return the function result
     */
    long applyAsLong(T t, U u);

ToLongFunction

/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    long applyAsLong(T value);

UnaryOperator extends Function<T, T>

/**
     * Returns a unary operator that always returns its input argument.
     *
     * @param <T> the type of the input and output of the operator
     * @return a unary operator that always returns its input argument
     */
    static <T> UnaryOperator<T> identity() {
        return t -> t;
    }

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