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/*
* Copyright (C) 2017-2022 Sebastiano Vigna
*
* 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 it.unimi.dsi.fastutil.doubles;
import java.util.Objects;
import java.util.function.Consumer;
/** A type-specific {@link Consumer}; provides methods to consume a primitive type both as object
* and as primitive.
*
* Except for the boolean case, this interface extends both a parameterized {@link java.util.function.Consumer}
* and a type-specific JDK consumer (e.g., {@link java.util.function.IntConsumer}). For types missing
* a type-specific JDK consumer (e.g., {@code short} or {@code float}), we extend the consumer associated with
* the smallest primitive type that can represent the current type (e.g., {@code int} or {@code double}, respectively).
*
* @see Consumer
* @since 8.0.0
*/
@FunctionalInterface
public interface DoubleConsumer extends Consumer, java.util.function.DoubleConsumer {
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
default void accept(final Double t) {
this.accept(t.doubleValue());
}
/**
* Returns a composed type-specific consumer that performs, in sequence, this
* operation followed by the {@code after} operation.
* @param after the operation to perform after this operation.
* @return a composed {@code Consumer} that performs in sequence this
* operation followed by the {@code after} operation.
* @see Consumer#andThen
* @apiNote Implementing classes should generally override this method and
* keep the default implementation of the other overloads, which will
* delegate to this method (after proper conversions).
*/
default DoubleConsumer andThen(final java.util.function.DoubleConsumer after) {
Objects.requireNonNull(after);
return t -> { accept(t); after.accept(t); };
}
/**
* Returns a composed type-specific consumer that performs, in sequence, this
* operation followed by the {@code after} operation.
*
* WARNING: Overriding this method is almost always a mistake, as this
* overload only exists to disambiguate. Instead, override the {@code andThen()} overload
* that uses the JDK's primitive consumer type (e.g. {@link java.util.function.IntConsumer}).
*
*
If Java supported final default methods, this would be one, but sadly it does not.
*
*
If you checked and are overriding the version with {@code java.util.function.XConsumer}, and
* you still see this warning, then your IDE is incorrectly conflating this method with the proper
* method to override, and you can safely ignore this message.
*
* @param after the operation to perform after this operation.
* @return a composed {@code Consumer} that performs in sequence this
* operation followed by the {@code after} operation.
* @see Consumer#andThen
*/
default DoubleConsumer andThen(final DoubleConsumer after) {
return andThen((java.util.function.DoubleConsumer) after);
}
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
default Consumer andThen(final Consumer after) {
return Consumer.super.andThen(after);
}
}