it.unimi.dsi.fastutil.objects

Class ObjectComparators

java.lang.Object

it.unimi.dsi.fastutil.objects.ObjectComparators

public final class ObjectComparators
extends java.lang.Object

A class providing static methods and objects that do useful things with comparators.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ObjectComparators.NaturalImplicitComparator A type-specific comparator mimicking the natural order.
protected static class	ObjectComparators.OppositeComparator<K>
protected static class	ObjectComparators.OppositeImplicitComparator A type-specific comparator mimicking the opposite of the natural order.

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.Comparator	NATURAL_COMPARATOR
static java.util.Comparator	OPPOSITE_COMPARATOR

Method Summary

Modifier and Type	Method and Description
static <K> java.util.Comparator<K>	asObjectComparator(java.util.Comparator<K> c) Returns a the comparator given unmodified.
static <K> java.util.Comparator<K>	oppositeComparator(java.util.Comparator<K> c) Returns a comparator representing the opposite order of the given comparator.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NATURAL_COMPARATOR

public static final java.util.Comparator NATURAL_COMPARATOR

OPPOSITE_COMPARATOR

public static final java.util.Comparator OPPOSITE_COMPARATOR

Method Detail

oppositeComparator

public static <K> java.util.Comparator<K> oppositeComparator(java.util.Comparator<K> c)

Returns a comparator representing the opposite order of the given comparator.

Parameters:

c - a comparator.

Returns:

a comparator representing the opposite order of c.

asObjectComparator

public static <K> java.util.Comparator<K> asObjectComparator(java.util.Comparator<K> c)

Returns a the comparator given unmodified. This method merely serves as a way to be compatible with primtive type-specific Comparators implementations, as they do have type-specific Comparators, but Object ones do not.

Parameters:

c - a comparator, or null.

Returns:

c, unmodified.