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/*
* Copyright (c) 2020 Goldman Sachs and others.
* 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.Collection;
import java.util.NoSuchElementException;
import java.util.LongSummaryStatistics;
import org.eclipse.collections.api.bag.primitive.MutableLongBag;
import org.eclipse.collections.api.block.function.primitive.LongLongToLongFunction;
import org.eclipse.collections.api.block.function.primitive.LongToBooleanFunction;
import org.eclipse.collections.api.block.function.primitive.LongToByteFunction;
import org.eclipse.collections.api.block.function.primitive.LongToShortFunction;
import org.eclipse.collections.api.block.function.primitive.LongToCharFunction;
import org.eclipse.collections.api.block.function.primitive.LongToDoubleFunction;
import org.eclipse.collections.api.block.function.primitive.LongToFloatFunction;
import org.eclipse.collections.api.block.function.primitive.LongToIntFunction;
import org.eclipse.collections.api.block.function.primitive.LongToLongFunction;
import org.eclipse.collections.api.block.function.primitive.ObjectLongToObjectFunction;
import org.eclipse.collections.api.block.function.primitive.LongToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.LongPredicate;
import org.eclipse.collections.api.block.procedure.primitive.LongProcedure;
import org.eclipse.collections.api.collection.primitive.MutableBooleanCollection;
import org.eclipse.collections.api.collection.primitive.MutableByteCollection;
import org.eclipse.collections.api.collection.primitive.MutableCharCollection;
import org.eclipse.collections.api.collection.primitive.MutableDoubleCollection;
import org.eclipse.collections.api.collection.primitive.MutableFloatCollection;
import org.eclipse.collections.api.collection.primitive.MutableIntCollection;
import org.eclipse.collections.api.collection.primitive.MutableLongCollection;
import org.eclipse.collections.api.collection.primitive.MutableShortCollection;
import org.eclipse.collections.api.iterator.LongIterator;
import org.eclipse.collections.api.list.primitive.MutableLongList;
import org.eclipse.collections.api.set.primitive.MutableLongSet;
/**
* LongIterable is an interface which is memory-optimized for long primitives.
* It is inspired by the interface RichIterable, and contains a subset of the internal iterator methods on RichIterable like collect, sum, etc.
* The API also includes an external iterator method, which returns an LongIterator. LongIterator helps iterate over the LongIterable without boxing the primitives.
* This file was automatically generated from template file primitiveIterable.stg.
*/
public interface LongIterable extends PrimitiveIterable
{
/**
* Returns a primitive iterator that can be used to iterate over the LongIterable in an
* imperative style.
*/
LongIterator longIterator();
/**
* Converts the LongIterable to a primitive long array.
*/
long[] toArray();
/**
* Converts the LongIterable to a primitive long array. If the collection fits into the provided array it is used
* to store its elements and is returned from the method, otherwise a new array of the appropriate size is allocated
* and returned. If the iterable is empty, the target array is returned unchanged.
*/
default long[] toArray(long[] target)
{
return this.toList().toArray(target);
}
/**
* Returns true if the value is contained in the LongIterable, and false if it is not.
*/
boolean contains(long value);
/**
* Returns true if the all of the values specified in the source array are contained
* in the LongIterable, and false if they are not.
*/
boolean containsAll(long... source);
/**
* Returns true if the all of the values specified in the source LongIterable are contained
* in the LongIterable, and false if they are not.
*/
boolean containsAll(LongIterable source);
/**
* Applies the LongProcedure to each element in the LongIterable.
*/
void forEach(LongProcedure procedure);
/**
* A synonym for forEach.
*
* @since 7.0.
*/
void each(LongProcedure procedure);
/**
* @since 9.0.
*/
default LongIterable tap(LongProcedure procedure)
{
this.forEach(procedure);
return this;
}
/**
* Returns a new LongIterable with all of the elements in the LongIterable that
* return true for the specified predicate.
*/
LongIterable select(LongPredicate predicate);
/**
* Returns a new LongIterable with all of the elements in the LongIterable that
* return false for the specified predicate.
*/
LongIterable reject(LongPredicate predicate);
/**
* Same as {@link #select(LongPredicate)} , only the results are added to the target MutableLongCollection.
*
* @since 8.1.
*/
default R select(LongPredicate predicate, R target)
{
this.each(each ->
{
if (predicate.accept(each))
{
target.add(each);
}
});
return target;
}
/**
* Same as {@link #reject(LongPredicate)} , only the results are added to the target MutableLongCollection.
*
* @since 8.1.
*/
default R reject(LongPredicate predicate, R target)
{
this.each(each ->
{
if (!predicate.accept(each))
{
target.add(each);
}
});
return target;
}
/**
* Returns a new collection with the results of applying the specified function on each element of the source
* collection. This method is also commonly called transform or map.
*/
RichIterable collect(LongToObjectFunction function);
/**
* Same as {@link #collect(LongToObjectFunction)} , only the results are added to the target Collection.
*
* @since 8.1.
*/
default > R collect(LongToObjectFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* {@code flatCollect} is a special case of {@link #collect(LongToObjectFunction)}. With {@code collect}, when the {@link LongToObjectFunction} returns
* a collection, the result is a collection of collections. {@code flatCollect} outputs a single "flattened" collection
* instead. This method is commonly called flatMap.
*
* @since 8.1.
*/
default > R flatCollect(LongToObjectFunction> function, R target)
{
this.each(each ->
{
Iterable iterable = function.valueOf(each);
if (iterable instanceof Collection)
{
target.addAll((Collection) iterable);
}
else
{
iterable.forEach(target::add);
}
});
return target;
}
/**
* Returns the target {@code MutableBooleanCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectBoolean(LongToBooleanFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* Returns the target {@code MutableByteCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectByte(LongToByteFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* Returns the target {@code MutableCharCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectChar(LongToCharFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* Returns the target {@code MutableShortCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectShort(LongToShortFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* Returns the target {@code MutableIntCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectInt(LongToIntFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* Returns the target {@code MutableFloatCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectFloat(LongToFloatFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* Returns the target {@code MutableLongCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectLong(LongToLongFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
/**
* Returns the target {@code MutableDoubleCollection} with the results of applying the specified function on each element
* of the source collection.
*
* @since 8.1.
*/
default R collectDouble(LongToDoubleFunction function, R target)
{
this.each(each -> target.add(function.valueOf(each)));
return target;
}
long detectIfNone(LongPredicate predicate, long ifNone);
/**
* Returns a count of the number of elements in the LongIterable that return true for the
* specified predicate.
*/
int count(LongPredicate predicate);
/**
* Returns true if any of the elements in the LongIterable return true for the
* specified predicate, otherwise returns false.
*/
boolean anySatisfy(LongPredicate predicate);
/**
* Returns true if all of the elements in the LongIterable return true for the
* specified predicate, otherwise returns false.
*/
boolean allSatisfy(LongPredicate predicate);
/**
* Returns true if none of the elements in the LongIterable return true for the
* specified predicate, otherwise returns false.
*/
boolean noneSatisfy(LongPredicate predicate);
/**
* Converts the LongIterable to a new MutableLongList.
*/
MutableLongList toList();
/**
* Converts the LongIterable to a new MutableLongSet.
*/
MutableLongSet toSet();
/**
* Converts the LongIterable to a new MutableLongBag.
*/
MutableLongBag toBag();
/**
* Returns a LazyLongIterable adapter wrapping the source LongIterable.
*/
LazyLongIterable asLazy();
T injectInto(T injectedValue, ObjectLongToObjectFunction function);
/**
* @see #reduce(LongLongToLongFunction)
*
* @since 10.0
*/
default long reduceIfEmpty(LongLongToLongFunction accumulator, long defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
else
{
return this.reduce(accumulator);
}
}
/**
* @see RichIterable#reduce(BinaryOperator)
*
* @since 10.0
*/
default long reduce(LongLongToLongFunction accumulator)
{
boolean[] seenOne = new boolean[1];
long[] result = new long[1];
this.each(each ->
{
if (seenOne[0])
{
result[0] = accumulator.valueOf(result[0], each);
}
else
{
seenOne[0] = true;
result[0] = each;
}
});
if (!seenOne[0])
{
throw new NoSuchElementException();
}
else
{
return result[0];
}
}
/**
* Partitions elements in fixed size chunks.
*
* @param size the number of elements per chunk
*
* @return A {@code RichIterable} containing {@code LongIterable}s of size {@code size}, except the last will be
* truncated if the elements don't divide evenly.
*
* @since 9.2
*/
default RichIterable chunk(int size)
{
throw new UnsupportedOperationException("Default method to prevent breaking backwards compatibility");
}
long sum();
/**
* @since 8.0
*/
default LongSummaryStatistics summaryStatistics()
{
LongSummaryStatistics stats = new LongSummaryStatistics();
this.forEach(stats::accept);
return stats;
}
long max();
long maxIfEmpty(long defaultValue);
long min();
long minIfEmpty(long defaultValue);
double average();
/**
* @since 9.0
*/
default double averageIfEmpty(double defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.average();
}
double median();
/**
* @since 9.0
*/
default double medianIfEmpty(double defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.median();
}
long[] toSortedArray();
MutableLongList toSortedList();
}
