org.eclipse.collections.impl.block.factory.Comparators

public final class Comparators
extends Object

Method Summary

Modifier and Type	Method	Description
`static SerializableComparator<Collection<?>>`	`ascendingCollectionSizeComparator()`
`static <T> SerializableComparator<T>`	`byBooleanFunction(BooleanFunction<T> function)`
`static <T> SerializableComparator<T>`	`byByteFunction(ByteFunction<T> function)`
`static <T> SerializableComparator<T>`	`byCharFunction(CharFunction<T> function)`
`static <T> SerializableComparator<T>`	`byDoubleFunction(DoubleFunction<T> function)`
`static <T> SerializableComparator<Pair<T,?>>`	`byFirstOfPair(Comparator<? super T> comparator)`	Creates a comparator for pairs by using an existing comparator that only compares the first element of the pair
`static <T> SerializableComparator<T>`	`byFloatFunction(FloatFunction<T> function)`
`static <T, V extends Comparable<? super V>> SerializableComparator<T>`	`byFunction(Function<? super T,? extends V> function)`
`static <T, V> SerializableComparator<T>`	`byFunction(Function<? super T,? extends V> function, Comparator<V> comparator)`
`static <T, V extends Comparable<? super V>> SerializableComparator<T>`	`byFunctionNullsFirst(Function<? super T,? extends V> function)`
`static <T, V extends Comparable<? super V>> SerializableComparator<T>`	`byFunctionNullsLast(Function<? super T,? extends V> function)`
`static <T> SerializableComparator<T>`	`byIntFunction(IntFunction<T> function)`
`static <T> SerializableComparator<T>`	`byLongFunction(LongFunction<T> function)`
`static <T> SerializableComparator<Pair<?,T>>`	`bySecondOfPair(Comparator<? super T> comparator)`	Creates a comparator for pairs by using an existing comparator that only compares the second element of the pair
`static <T> SerializableComparator<T>`	`byShortFunction(ShortFunction<T> function)`
`static <T> SerializableComparator<T>`	`chain(Comparator<T>... comparators)`
`static <T> SerializableComparator<T>`	`comparableComparator()`
`static <T> Comparator<? super T>`	`comparableComparatorIfNull(Comparator<? super T> comparator)`
`static SerializableComparator<Collection<?>>`	`descendingCollectionSizeComparator()`
`static <T, V extends Comparable<? super V>> SerializableComparator<T>`	`fromFunctions(Function<? super T,? extends V> one)`
`static <T, V1 extends Comparable<? super V1>, V2 extends Comparable<? super V2>> SerializableComparator<T>`	`fromFunctions(Function<? super T,? extends V1> one, Function<? super T,? extends V2> two)`
`static <T, V1 extends Comparable<? super V1>, V2 extends Comparable<? super V2>, V3 extends Comparable<? super V3>> SerializableComparator<T>`	`fromFunctions(Function<? super T,? extends V1> one, Function<? super T,? extends V2> two, Function<? super T,? extends V3> three)`
`static <T> SerializableComparator<T>`	`naturalOrder()`	Uses the natural compareTo methods of the objects which will throw if there are any nulls.
`static <T extends Comparable<T>> int`	`nullSafeCompare(T value1, T value2)`
`static boolean`	`nullSafeEquals(Object value1, Object value2)`
`static <T> SerializableComparator<SortedSetIterable<T>>`	`powerSet()`
`static <T> SerializableComparator<T>`	`reverse(Comparator<T> comparator)`
`static <T> SerializableComparator<T>`	`reverseNaturalOrder()`	Uses the natural compareTo methods of the objects which will throw if there are any nulls.
`static <T> SerializableComparator<T>`	`safeNullsHigh(Comparator<T> notNullSafeComparator)`
`static <T> SerializableComparator<T>`	`safeNullsLow(Comparator<T> notNullSafeComparator)`

Methods inherited from class java.lang.Object

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

Method Details
- comparableComparator
  
  public static <T> SerializableComparator<T> comparableComparator()
  
  Since:
  
  10.0
- comparableComparatorIfNull
  
  public static <T> Comparator<? super T> comparableComparatorIfNull(Comparator<? super T> comparator)
  
  Since:
  
  10.0
- naturalOrder
  
  public static <T> SerializableComparator<T> naturalOrder()
  
  Uses the natural compareTo methods of the objects which will throw if there are any nulls.
- reverseNaturalOrder
  
  public static <T> SerializableComparator<T> reverseNaturalOrder()
  
  Uses the natural compareTo methods of the objects which will throw if there are any nulls.
- reverse
  
  public static <T> SerializableComparator<T> reverse(Comparator<T> comparator)
  
  Parameters:
  
  comparator - original comparator whose order will be reversed
  
  Returns:
  
  A comparator that reverses the order of any other Serializable Comparator.
- safeNullsLow
  
  public static <T> SerializableComparator<T> safeNullsLow(Comparator<T> notNullSafeComparator)
- safeNullsHigh
  
  public static <T> SerializableComparator<T> safeNullsHigh(Comparator<T> notNullSafeComparator)
- chain
  
  @SafeVarargs public static <T> SerializableComparator<T> chain(Comparator<T>... comparators)
- fromFunctions
  
  public static <T, V extends Comparable<? super V>> SerializableComparator<T> fromFunctions(Function<? super T,? extends V> one)
- fromFunctions
  
  public static <T, V1 extends Comparable<? super V1>, V2 extends Comparable<? super V2>> SerializableComparator<T> fromFunctions(Function<? super T,? extends V1> one, Function<? super T,? extends V2> two)
- fromFunctions
  
  public static <T, V1 extends Comparable<? super V1>, V2 extends Comparable<? super V2>, V3 extends Comparable<? super V3>> SerializableComparator<T> fromFunctions(Function<? super T,? extends V1> one, Function<? super T,? extends V2> two, Function<? super T,? extends V3> three)
- powerSet
  
  public static <T> SerializableComparator<SortedSetIterable<T>> powerSet()
- ascendingCollectionSizeComparator
  
  public static SerializableComparator<Collection<?>> ascendingCollectionSizeComparator()
- descendingCollectionSizeComparator
  
  public static SerializableComparator<Collection<?>> descendingCollectionSizeComparator()
- byFirstOfPair
  
  public static <T> SerializableComparator<Pair<T,?>> byFirstOfPair(Comparator<? super T> comparator)
  
  Creates a comparator for pairs by using an existing comparator that only compares the first element of the pair
  
  Parameters:
  
  comparator - original comparator that compares the first element of the pair
  
  Returns:
  
  A comparator that compares pairs only by their first element
- bySecondOfPair
  
  public static <T> SerializableComparator<Pair<?,T>> bySecondOfPair(Comparator<? super T> comparator)
  
  Creates a comparator for pairs by using an existing comparator that only compares the second element of the pair
  
  Parameters:
  
  comparator - original comparator that compares the second element of the pair
  
  Returns:
  
  A comparator that compares pairs only by their second element
- byFunction
  
  public static <T, V extends Comparable<? super V>> SerializableComparator<T> byFunction(Function<? super T,? extends V> function)
- byFunctionNullsLast
  
  public static <T, V extends Comparable<? super V>> SerializableComparator<T> byFunctionNullsLast(Function<? super T,? extends V> function)
- byFunctionNullsFirst
  
  public static <T, V extends Comparable<? super V>> SerializableComparator<T> byFunctionNullsFirst(Function<? super T,? extends V> function)
- byBooleanFunction
  
  public static <T> SerializableComparator<T> byBooleanFunction(BooleanFunction<T> function)
- byByteFunction
  
  public static <T> SerializableComparator<T> byByteFunction(ByteFunction<T> function)
- byCharFunction
  
  public static <T> SerializableComparator<T> byCharFunction(CharFunction<T> function)
- byDoubleFunction
  
  public static <T> SerializableComparator<T> byDoubleFunction(DoubleFunction<T> function)
- byFloatFunction
  
  public static <T> SerializableComparator<T> byFloatFunction(FloatFunction<T> function)
- byIntFunction
  
  public static <T> SerializableComparator<T> byIntFunction(IntFunction<T> function)
- byLongFunction
  
  public static <T> SerializableComparator<T> byLongFunction(LongFunction<T> function)
- byShortFunction
  
  public static <T> SerializableComparator<T> byShortFunction(ShortFunction<T> function)
- byFunction
  
  public static <T, V> SerializableComparator<T> byFunction(Function<? super T,? extends V> function, Comparator<V> comparator)
- nullSafeEquals
  
  public static boolean nullSafeEquals(Object value1, Object value2)
- nullSafeCompare
  
  public static <T extends Comparable<T>> int nullSafeCompare(T value1, T value2)

Class Comparators

Method Summary

Methods inherited from class java.lang.Object

Method Details