BinaryOperator

@FunctionalInterface interface BinaryOperator<T : Any!> : BiFunction<T, T, T>
java.util.function.BinaryOperator

Represents an operation upon two operands of the same type, producing a result of the same type as the operands. This is a specialization of BiFunction for the case where the operands and the result are all of the same type.

This is a functional interface whose functional method is #apply(Object, Object).
Requires API level 24 (Android 7.0, Nougat)

Summary

Public methods
open static BinaryOperator<T>!
minBy(comparator: Comparator<in T>!)

Returns a BinaryOperator which returns the lesser of two elements according to the specified Comparator.

open static BinaryOperator<T>!
maxBy(comparator: Comparator<in T>!)

Returns a BinaryOperator which returns the greater of two elements according to the specified Comparator.

Inherited functions

Public methods

minBy

added in API level 24
open static fun <T : Any!> minBy(comparator: Comparator<in T>!): BinaryOperator<T>!

Returns a BinaryOperator which returns the lesser of two elements according to the specified Comparator.
Requires API level 24 (Android 7.0, Nougat)

Parameters
<T> Comparator<in T>!: the type of the input arguments of the comparator
comparator Comparator<in T>!: a Comparator for comparing the two values
Return
BinaryOperator<T>!: a BinaryOperator which returns the lesser of its operands, according to the supplied Comparator
Exceptions
NullPointerException if the argument is null

maxBy

added in API level 24
open static fun <T : Any!> maxBy(comparator: Comparator<in T>!): BinaryOperator<T>!

Returns a BinaryOperator which returns the greater of two elements according to the specified Comparator.
Requires API level 24 (Android 7.0, Nougat)

Parameters
<T> Comparator<in T>!: the type of the input arguments of the comparator
comparator Comparator<in T>!: a Comparator for comparing the two values
Return
BinaryOperator<T>!: a BinaryOperator which returns the greater of its operands, according to the supplied Comparator
Exceptions
NullPointerException if the argument is null