Java tutorial
/* * Copyright (c) 2016 Gridtec. All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package at.gridtec.lambda4j.function.tri.conversion; import at.gridtec.lambda4j.Lambda; import at.gridtec.lambda4j.consumer.CharConsumer; import at.gridtec.lambda4j.consumer.tri.TriDoubleConsumer; import at.gridtec.lambda4j.function.CharFunction; import at.gridtec.lambda4j.function.bi.conversion.BiDoubleToCharFunction; import at.gridtec.lambda4j.function.conversion.BooleanToDoubleFunction; import at.gridtec.lambda4j.function.conversion.ByteToDoubleFunction; import at.gridtec.lambda4j.function.conversion.CharToByteFunction; import at.gridtec.lambda4j.function.conversion.CharToDoubleFunction; import at.gridtec.lambda4j.function.conversion.CharToFloatFunction; import at.gridtec.lambda4j.function.conversion.CharToIntFunction; import at.gridtec.lambda4j.function.conversion.CharToLongFunction; import at.gridtec.lambda4j.function.conversion.CharToShortFunction; import at.gridtec.lambda4j.function.conversion.DoubleToCharFunction; import at.gridtec.lambda4j.function.conversion.FloatToDoubleFunction; import at.gridtec.lambda4j.function.conversion.ShortToDoubleFunction; import at.gridtec.lambda4j.function.tri.TriDoubleFunction; import at.gridtec.lambda4j.function.tri.TriFunction; import at.gridtec.lambda4j.function.tri.to.ToCharTriFunction; import at.gridtec.lambda4j.operator.ternary.CharTernaryOperator; import at.gridtec.lambda4j.operator.ternary.DoubleTernaryOperator; import at.gridtec.lambda4j.operator.unary.CharUnaryOperator; import at.gridtec.lambda4j.predicate.CharPredicate; import at.gridtec.lambda4j.predicate.tri.TriDoublePredicate; import org.apache.commons.lang3.tuple.Triple; import javax.annotation.Nonnegative; import javax.annotation.Nonnull; import javax.annotation.Nullable; import java.util.Map; import java.util.Objects; import java.util.concurrent.ConcurrentHashMap; import java.util.function.DoubleUnaryOperator; import java.util.function.IntToDoubleFunction; import java.util.function.LongToDoubleFunction; import java.util.function.ToDoubleFunction; /** * Represents an operation that accepts three {@code double}-valued input arguments and produces a * {@code char}-valued result. * This is a primitive specialization of {@link TriFunction}. * <p> * This is a {@link FunctionalInterface} whose functional method is {@link #applyAsChar(double, double, double)}. * * @see TriFunction */ @SuppressWarnings("unused") @FunctionalInterface public interface TriDoubleToCharFunction extends Lambda { /** * Constructs a {@link TriDoubleToCharFunction} based on a lambda expression or a method reference. Thereby the * given lambda expression or method reference is returned on an as-is basis to implicitly transform it to the * desired type. With this method, it is possible to ensure that correct type is used from lambda expression or * method reference. * * @param expression A lambda expression or (typically) a method reference, e.g. {@code this::method} * @return A {@code TriDoubleToCharFunction} from given lambda expression or method reference. * @implNote This implementation allows the given argument to be {@code null}, but only if {@code null} given, * {@code null} will be returned. * @see <a href="https://docs.oracle.com/javase/tutorial/java/javaOO/lambdaexpressions.html#syntax">Lambda * Expression</a> * @see <a href="https://docs.oracle.com/javase/tutorial/java/javaOO/methodreferences.html">Method Reference</a> */ static TriDoubleToCharFunction of(@Nullable final TriDoubleToCharFunction expression) { return expression; } /** * Calls the given {@link TriDoubleToCharFunction} with the given arguments and returns its result. * * @param function The function to be called * @param value1 The first argument to the function * @param value2 The second argument to the function * @param value3 The third argument to the function * @return The result from the given {@code TriDoubleToCharFunction}. * @throws NullPointerException If given argument is {@code null} */ static char call(@Nonnull final TriDoubleToCharFunction function, double value1, double value2, double value3) { Objects.requireNonNull(function); return function.applyAsChar(value1, value2, value3); } /** * Creates a {@link TriDoubleToCharFunction} which uses the {@code first} parameter of this one as argument for the * given {@link DoubleToCharFunction}. * * @param function The function which accepts the {@code first} parameter of this one * @return Creates a {@code TriDoubleToCharFunction} which uses the {@code first} parameter of this one as argument * for the given {@code DoubleToCharFunction}. * @throws NullPointerException If given argument is {@code null} */ @Nonnull static TriDoubleToCharFunction onlyFirst(@Nonnull final DoubleToCharFunction function) { Objects.requireNonNull(function); return (value1, value2, value3) -> function.applyAsChar(value1); } /** * Creates a {@link TriDoubleToCharFunction} which uses the {@code second} parameter of this one as argument for the * given {@link DoubleToCharFunction}. * * @param function The function which accepts the {@code second} parameter of this one * @return Creates a {@code TriDoubleToCharFunction} which uses the {@code second} parameter of this one as argument * for the given {@code DoubleToCharFunction}. * @throws NullPointerException If given argument is {@code null} */ @Nonnull static TriDoubleToCharFunction onlySecond(@Nonnull final DoubleToCharFunction function) { Objects.requireNonNull(function); return (value1, value2, value3) -> function.applyAsChar(value2); } /** * Creates a {@link TriDoubleToCharFunction} which uses the {@code third} parameter of this one as argument for the * given {@link DoubleToCharFunction}. * * @param function The function which accepts the {@code third} parameter of this one * @return Creates a {@code TriDoubleToCharFunction} which uses the {@code third} parameter of this one as argument * for the given {@code DoubleToCharFunction}. * @throws NullPointerException If given argument is {@code null} */ @Nonnull static TriDoubleToCharFunction onlyThird(@Nonnull final DoubleToCharFunction function) { Objects.requireNonNull(function); return (value1, value2, value3) -> function.applyAsChar(value3); } /** * Creates a {@link TriDoubleToCharFunction} which always returns a given value. * * @param ret The return value for the constant * @return A {@code TriDoubleToCharFunction} which always returns a given value. */ @Nonnull static TriDoubleToCharFunction constant(char ret) { return (value1, value2, value3) -> ret; } /** * Applies this function to the given arguments. * * @param value1 The first argument to the function * @param value2 The second argument to the function * @param value3 The third argument to the function * @return The return value from the function, which is its result. */ char applyAsChar(double value1, double value2, double value3); /** * Applies this function partially to some arguments of this one, producing a {@link BiDoubleToCharFunction} as * result. * * @param value1 The first argument to this function used to partially apply this function * @return A {@code BiDoubleToCharFunction} that represents this function partially applied the some arguments. */ @Nonnull default BiDoubleToCharFunction papplyAsChar(double value1) { return (value2, value3) -> this.applyAsChar(value1, value2, value3); } /** * Applies this function partially to some arguments of this one, producing a {@link DoubleToCharFunction} as * result. * * @param value1 The first argument to this function used to partially apply this function * @param value2 The second argument to this function used to partially apply this function * @return A {@code DoubleToCharFunction} that represents this function partially applied the some arguments. */ @Nonnull default DoubleToCharFunction papplyAsChar(double value1, double value2) { return (value3) -> this.applyAsChar(value1, value2, value3); } /** * Returns the number of arguments for this function. * * @return The number of arguments for this function. * @implSpec The default implementation always returns {@code 3}. */ @Nonnegative default int arity() { return 3; } /** * Returns a composed {@link ToCharTriFunction} that first applies the {@code before} functions to its input, and * then applies this function to the result. * If evaluation of either operation throws an exception, it is relayed to the caller of the composed operation. * * @param <A> The type of the argument to the first given function, and of composed function * @param <B> The type of the argument to the second given function, and of composed function * @param <C> The type of the argument to the third given function, and of composed function * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code ToCharTriFunction} that first applies the {@code before} functions to its input, and * then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is able to handle every type. */ @Nonnull default <A, B, C> ToCharTriFunction<A, B, C> compose(@Nonnull final ToDoubleFunction<? super A> before1, @Nonnull final ToDoubleFunction<? super B> before2, @Nonnull final ToDoubleFunction<? super C> before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (a, b, c) -> applyAsChar(before1.applyAsDouble(a), before2.applyAsDouble(b), before3.applyAsDouble(c)); } /** * Returns a composed {@link TriBooleanToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * execute an operation which accepts {@code boolean} input, before this primitive function is executed. * * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code TriBooleanToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * boolean}. */ @Nonnull default TriBooleanToCharFunction composeFromBoolean(@Nonnull final BooleanToDoubleFunction before1, @Nonnull final BooleanToDoubleFunction before2, @Nonnull final BooleanToDoubleFunction before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link TriByteToCharFunction} that first applies the {@code before} functions to * its input, and then applies this function to the result. * If evaluation of either operation throws an exception, it is relayed to the caller of the composed operation. * This method is just convenience, to provide the ability to execute an operation which accepts {@code byte} input, * before this primitive function is executed. * * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code TriByteToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * byte}. */ @Nonnull default TriByteToCharFunction composeFromByte(@Nonnull final ByteToDoubleFunction before1, @Nonnull final ByteToDoubleFunction before2, @Nonnull final ByteToDoubleFunction before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link CharTernaryOperator} that first applies the {@code before} functions to * its input, and then applies this function to the result. * If evaluation of either operation throws an exception, it is relayed to the caller of the composed operation. * This method is just convenience, to provide the ability to execute an operation which accepts {@code char} input, * before this primitive function is executed. * * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code CharTernaryOperator} that first applies the {@code before} functions to its input, and * then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * char}. */ @Nonnull default CharTernaryOperator composeFromChar(@Nonnull final CharToDoubleFunction before1, @Nonnull final CharToDoubleFunction before2, @Nonnull final CharToDoubleFunction before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link TriDoubleToCharFunction} that first applies the {@code before} operators to its input, * and then applies this function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * execute an operation which accepts {@code double} input, before this primitive function is executed. * * @param before1 The first operator to apply before this function is applied * @param before2 The second operator to apply before this function is applied * @param before3 The third operator to apply before this function is applied * @return A composed {@code TriDoubleToCharFunction} that first applies the {@code before} operators to its input, * and then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * double}. */ @Nonnull default TriDoubleToCharFunction composeFromDouble(@Nonnull final DoubleUnaryOperator before1, @Nonnull final DoubleUnaryOperator before2, @Nonnull final DoubleUnaryOperator before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link TriFloatToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * execute an operation which accepts {@code float} input, before this primitive function is executed. * * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code TriFloatToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * float}. */ @Nonnull default TriFloatToCharFunction composeFromFloat(@Nonnull final FloatToDoubleFunction before1, @Nonnull final FloatToDoubleFunction before2, @Nonnull final FloatToDoubleFunction before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link TriIntToCharFunction} that first applies the {@code before} functions to * its input, and then applies this function to the result. * If evaluation of either operation throws an exception, it is relayed to the caller of the composed operation. * This method is just convenience, to provide the ability to execute an operation which accepts {@code int} input, * before this primitive function is executed. * * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code TriIntToCharFunction} that first applies the {@code before} functions to its input, and * then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * int}. */ @Nonnull default TriIntToCharFunction composeFromInt(@Nonnull final IntToDoubleFunction before1, @Nonnull final IntToDoubleFunction before2, @Nonnull final IntToDoubleFunction before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link TriLongToCharFunction} that first applies the {@code before} functions to * its input, and then applies this function to the result. * If evaluation of either operation throws an exception, it is relayed to the caller of the composed operation. * This method is just convenience, to provide the ability to execute an operation which accepts {@code long} input, * before this primitive function is executed. * * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code TriLongToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * long}. */ @Nonnull default TriLongToCharFunction composeFromLong(@Nonnull final LongToDoubleFunction before1, @Nonnull final LongToDoubleFunction before2, @Nonnull final LongToDoubleFunction before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link TriShortToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * execute an operation which accepts {@code short} input, before this primitive function is executed. * * @param before1 The first function to apply before this function is applied * @param before2 The second function to apply before this function is applied * @param before3 The third function to apply before this function is applied * @return A composed {@code TriShortToCharFunction} that first applies the {@code before} functions to its input, * and then applies this function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to handle primitive values. In this case this is {@code * short}. */ @Nonnull default TriShortToCharFunction composeFromShort(@Nonnull final ShortToDoubleFunction before1, @Nonnull final ShortToDoubleFunction before2, @Nonnull final ShortToDoubleFunction before3) { Objects.requireNonNull(before1); Objects.requireNonNull(before2); Objects.requireNonNull(before3); return (value1, value2, value3) -> applyAsChar(before1.applyAsDouble(value1), before2.applyAsDouble(value2), before3.applyAsDouble(value3)); } /** * Returns a composed {@link TriDoubleFunction} that first applies this function to its input, and then applies the * {@code after} function to the result. * If evaluation of either operation throws an exception, it is relayed to the caller of the composed operation. * * @param <S> The type of return value from the {@code after} function, and of the composed function * @param after The function to apply after this function is applied * @return A composed {@code TriDoubleFunction} that first applies this function to its input, and then applies the * {@code after} function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is able to return every type. */ @Nonnull default <S> TriDoubleFunction<S> andThen(@Nonnull final CharFunction<? extends S> after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.apply(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoublePredicate} that first applies this function to its input, and then applies the * {@code after} predicate to the result. If evaluation of either operation throws an exception, it is relayed to * the caller of the composed operation. This method is just convenience, to provide the ability to transform this * primitive function to an operation returning {@code boolean}. * * @param after The predicate to apply after this function is applied * @return A composed {@code TriDoublePredicate} that first applies this function to its input, and then applies the * {@code after} predicate to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * boolean}. */ @Nonnull default TriDoublePredicate andThenToBoolean(@Nonnull final CharPredicate after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.test(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoubleToByteFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * transform this primitive function to an operation returning {@code byte}. * * @param after The function to apply after this function is applied * @return A composed {@code TriDoubleToByteFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * byte}. */ @Nonnull default TriDoubleToByteFunction andThenToByte(@Nonnull final CharToByteFunction after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.applyAsByte(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoubleToCharFunction} that first applies this function to its input, and then * applies the {@code after} operator to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * transform this primitive function to an operation returning {@code char}. * * @param after The operator to apply after this function is applied * @return A composed {@code TriDoubleToCharFunction} that first applies this function to its input, and then * applies the {@code after} operator to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * char}. */ @Nonnull default TriDoubleToCharFunction andThenToChar(@Nonnull final CharUnaryOperator after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.applyAsChar(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link DoubleTernaryOperator} that first applies this function to its input, and then applies * the {@code after} function to the result. If evaluation of either operation throws an exception, it is relayed to * the caller of the composed operation. This method is just convenience, to provide the ability to transform this * primitive function to an operation returning {@code double}. * * @param after The function to apply after this function is applied * @return A composed {@code DoubleTernaryOperator} that first applies this function to its input, and then applies * the {@code after} function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * double}. */ @Nonnull default DoubleTernaryOperator andThenToDouble(@Nonnull final CharToDoubleFunction after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.applyAsDouble(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoubleToFloatFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * transform this primitive function to an operation returning {@code float}. * * @param after The function to apply after this function is applied * @return A composed {@code TriDoubleToFloatFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * float}. */ @Nonnull default TriDoubleToFloatFunction andThenToFloat(@Nonnull final CharToFloatFunction after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.applyAsFloat(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoubleToIntFunction} that first applies this function to its input, and then applies * the {@code after} function to the result. If evaluation of either operation throws an exception, it is relayed to * the caller of the composed operation. This method is just convenience, to provide the ability to transform this * primitive function to an operation returning {@code int}. * * @param after The function to apply after this function is applied * @return A composed {@code TriDoubleToIntFunction} that first applies this function to its input, and then applies * the {@code after} function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * int}. */ @Nonnull default TriDoubleToIntFunction andThenToInt(@Nonnull final CharToIntFunction after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.applyAsInt(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoubleToLongFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * transform this primitive function to an operation returning {@code long}. * * @param after The function to apply after this function is applied * @return A composed {@code TriDoubleToLongFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * long}. */ @Nonnull default TriDoubleToLongFunction andThenToLong(@Nonnull final CharToLongFunction after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.applyAsLong(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoubleToShortFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. If evaluation of either operation throws an exception, it is * relayed to the caller of the composed operation. This method is just convenience, to provide the ability to * transform this primitive function to an operation returning {@code short}. * * @param after The function to apply after this function is applied * @return A composed {@code TriDoubleToShortFunction} that first applies this function to its input, and then * applies the {@code after} function to the result. * @throws NullPointerException If given argument is {@code null} * @implSpec The input argument of this method is a able to return primitive values. In this case this is {@code * short}. */ @Nonnull default TriDoubleToShortFunction andThenToShort(@Nonnull final CharToShortFunction after) { Objects.requireNonNull(after); return (value1, value2, value3) -> after.applyAsShort(applyAsChar(value1, value2, value3)); } /** * Returns a composed {@link TriDoubleConsumer} that fist applies this function to its input, and then consumes the * result using the given {@link CharConsumer}. If evaluation of either operation throws an exception, it is relayed * to the caller of the composed operation. * * @param consumer The operation which consumes the result from this operation * @return A composed {@code TriDoubleConsumer} that first applies this function to its input, and then consumes the * result using the given {@code CharConsumer}. * @throws NullPointerException If given argument is {@code null} */ @Nonnull default TriDoubleConsumer consume(@Nonnull final CharConsumer consumer) { Objects.requireNonNull(consumer); return (value1, value2, value3) -> consumer.accept(applyAsChar(value1, value2, value3)); } /** * Returns a memoized (caching) version of this {@link TriDoubleToCharFunction}. Whenever it is called, the mapping * between the input parameters and the return value is preserved in a cache, making subsequent calls returning the * memoized value instead of computing the return value again. * <p> * Unless the function and therefore the used cache will be garbage-collected, it will keep all memoized values * forever. * * @return A memoized (caching) version of this {@code TriDoubleToCharFunction}. * @implSpec This implementation does not allow the input parameters or return value to be {@code null} for the * resulting memoized function, as the cache used internally does not permit {@code null} keys or values. * @implNote The returned memoized function can be safely used concurrently from multiple threads which makes it * thread-safe. */ @Nonnull default TriDoubleToCharFunction memoized() { if (isMemoized()) { return this; } else { final Map<Triple<Double, Double, Double>, Character> cache = new ConcurrentHashMap<>(); final Object lock = new Object(); return (TriDoubleToCharFunction & Memoized) (value1, value2, value3) -> { final char returnValue; synchronized (lock) { returnValue = cache.computeIfAbsent(Triple.of(value1, value2, value3), key -> applyAsChar(key.getLeft(), key.getMiddle(), key.getRight())); } return returnValue; }; } } /** * Returns a composed {@link TriFunction} which represents this {@link TriDoubleToCharFunction}. Thereby the * primitive input argument for this function is autoboxed. This method provides the possibility to use this {@code * TriDoubleToCharFunction} with methods provided by the {@code JDK}. * * @return A composed {@code TriFunction} which represents this {@code TriDoubleToCharFunction}. */ @Nonnull default TriFunction<Double, Double, Double, Character> boxed() { return this::applyAsChar; } }