Package org.eclipse.collections.impl.block.factory

Class Functions2

java.lang.Object

org.eclipse.collections.impl.block.factory.Functions2

public final class Functions2
extends Object

Contains factory methods for creating Function2 instances.

Method Summary

Modifier and Type	Method	Description
static <T, V, P> Function2<T,P,V>	fromFunction(Function<? super T,? extends V> function)
static Function2<Integer,Integer,Integer>	integerAddition()
static <T> Function2<T,T,T>	max(Comparator<? super T> comparator)
static <T, V extends Comparable<? super V>> Function2<T,T,T>	maxBy(Function<? super T,? extends V> function)
static <T> Function2<T,T,T>	min(Comparator<? super T> comparator)
static <T, V extends Comparable<? super V>> Function2<T,T,T>	minBy(Function<? super T,? extends V> function)
static <T, V, P> Function2<T,P,V>	throwing(ThrowingFunction2<T,P,V> throwingFunction2)	Allows a lambda or anonymous inner class that needs to throw a checked exception to be safely wrapped as a Function2 that will throw a RuntimeException, wrapping the checked exception that is the cause.
static <T1, T2, V> Function2<T1,T2,V>	throwing(ThrowingFunction2<T1,T2,V> throwingFunction2, Function3<T1,T2,? super Throwable,? extends RuntimeException> rethrow)	Allows a lambda or anonymous inner class that needs to throw a checked exception to be safely wrapped as a Function2 that will throw a user specified RuntimeException based on the provided function.

Methods inherited from class java.lang.Object

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

Method Details

fromFunction

public static <T,
V,
P> Function2<T,P,V> fromFunction(Function<? super T,? extends V> function)

throwing

public static <T,
V,
P> Function2<T,P,V> throwing(ThrowingFunction2<T,P,V> throwingFunction2)

Allows a lambda or anonymous inner class that needs to throw a checked exception to be safely wrapped as a Function2 that will throw a RuntimeException, wrapping the checked exception that is the cause.

throwing

public static <T1,
T2,
V> Function2<T1,T2,V> throwing(ThrowingFunction2<T1,T2,V> throwingFunction2,
 Function3<T1,T2,? super Throwable,? extends RuntimeException> rethrow)

Allows a lambda or anonymous inner class that needs to throw a checked exception to be safely wrapped as a Function2 that will throw a user specified RuntimeException based on the provided function. The function is passed the current element and the checked exception that was thrown as context arguments.

integerAddition

public static Function2<Integer,Integer,Integer> integerAddition()

min

public static <T> Function2<T,T,T> min(Comparator<? super T> comparator)

max

public static <T> Function2<T,T,T> max(Comparator<? super T> comparator)

minBy

public static <T,
V extends Comparable<? super V>>
Function2<T,T,T> minBy(Function<? super T,? extends V> function)

maxBy

public static <T,
V extends Comparable<? super V>>
Function2<T,T,T> maxBy(Function<? super T,? extends V> function)