/*
	* Copyright (C) 2002-2019 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.longs;
An abstract class providing basic methods for functions implementing a type-specific interface.

This class handles directly a default return value (including methods to access it). Instances of classes inheriting from this class have just to return defRetValue to denote lack of a key in type-specific methods. The value is serialized.

Implementing subclasses have just to provide type-specific get(), type-specific containsKey(), and size() methods.

/** * An abstract class providing basic methods for functions implementing a * type-specific interface. * * <p> * This class handles directly a default return value (including * {@linkplain #defaultReturnValue() methods to access it}). Instances of * classes inheriting from this class have just to return {@code defRetValue} to * denote lack of a key in type-specific methods. The value is serialized. * * <p> * Implementing subclasses have just to provide type-specific {@code get()}, * type-specific {@code containsKey()}, and {@code size()} methods. * */
public abstract class AbstractLong2CharFunction implements Long2CharFunction, java.io.Serializable { private static final long serialVersionUID = -4940583368468432370L; protected AbstractLong2CharFunction() { }
The default return value for get(), put() and remove().
/** * The default return value for {@code get()}, {@code put()} and * {@code remove()}. */
protected char defRetValue; @Override public void defaultReturnValue(final char rv) { defRetValue = rv; } @Override public char defaultReturnValue() { return defRetValue; } }