org.eclipse.collections.api.InternalIterable Maven / Gradle / Ivy
/*
* Copyright (c) 2018 Goldman Sachs.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompany this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package org.eclipse.collections.api;
import java.util.function.Consumer;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.block.procedure.Procedure2;
import org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure;
import org.eclipse.collections.api.ordered.OrderedIterable;
/**
* The base interface for all Eclipse Collections. All Eclipse Collections are internally iterable, and this interface provides
* the base set of internal iterators that every Eclipse collection should implement.
*/
public interface InternalIterable
extends Iterable
{
/**
* The procedure is executed for each element in the iterable.
*
* Example using a Java 8 lambda:
*
* people.forEach(Procedures.cast(person -> LOGGER.info(person.getName())));
*
*
* Example using an anonymous inner class:
*
* people.forEach(new Procedure<Person>()
* {
* public void value(Person person)
* {
* LOGGER.info(person.getName());
* }
* });
*
* NOTE: This method started to conflict with {@link Iterable#forEach(java.util.function.Consumer)}
* since Java 1.8. It is recommended to use {@link RichIterable#each(Procedure)} instead to avoid casting to Procedure.
*
* @see RichIterable#each(Procedure)
* @see Iterable#forEach(java.util.function.Consumer)
*/
@SuppressWarnings("UnnecessaryFullyQualifiedName")
void forEach(Procedure procedure);
@Override
default void forEach(Consumer consumer)
{
Procedure procedure = consumer::accept;
this.forEach(procedure);
}
/**
* Iterates over the iterable passing each element and the current relative int index to the specified instance of
* ObjectIntProcedure.
*
* Example using a Java 8 lambda:
*
* people.forEachWithIndex((Person person, int index) -> LOGGER.info("Index: " + index + " person: " + person.getName()));
*
*
* Example using an anonymous inner class:
*
* people.forEachWithIndex(new ObjectIntProcedure<Person>()
* {
* public void value(Person person, int index)
* {
* LOGGER.info("Index: " + index + " person: " + person.getName());
* }
* });
*
*
* @deprecated in 6.0. Use {@link OrderedIterable#forEachWithIndex(ObjectIntProcedure)} instead.
*/
@Deprecated
void forEachWithIndex(ObjectIntProcedure objectIntProcedure);
/**
* The procedure2 is evaluated for each element in the iterable with the specified parameter provided
* as the second argument.
*
* Example using a Java 8 lambda:
*
* people.forEachWith((Person person, Person other) ->
* {
* if (person.isRelatedTo(other))
* {
* LOGGER.info(person.getName());
* }
* }, fred);
*
*
* Example using an anonymous inner class:
*
* people.forEachWith(new Procedure2<Person, Person>()
* {
* public void value(Person person, Person other)
* {
* if (person.isRelatedTo(other))
* {
* LOGGER.info(person.getName());
* }
* }
* }, fred);
*
*/
void forEachWith(Procedure2 procedure, P parameter);
}