BiFunction | API reference | Android Developers (original) (raw)
@FunctionalInterface interface BiFunction<T : Any!, U : Any!, R : Any!>
Known Direct Subclasses
| BinaryOperator | Represents an operation upon two operands of the same type, producing a result of the same type as the operands. |
|---|
Represents a function that accepts two arguments and produces a result. This is the two-arity specialization of [Function](/reference/kotlin/java/util/function/Function).
This is a functional interface whose functional method is [apply(java.lang.Object,java.lang.Object)](#apply%28java.util.function.BiFunction.T,%20java.util.function.BiFunction.U%29).
Summary
| Public methods | |
|---|---|
| open BiFunction<T, U, V>! | andThen(after: Function<in R, out V>!) Returns a composed function that first applies this function to its input, and then applies the after function to the result. |
| abstract R | apply(t: T, u: U) Applies this function to the given arguments. |
Public methods
andThen
open fun <V : Any!> andThen(after: Function<in R, out V>!): BiFunction<T, U, V>!
Returns a composed function that first applies this function to its input, and then applies the after function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
| Parameters | |
|---|---|
| the type of output of the after function, and of the composed function | |
| after | Function<in R, out V>!: the function to apply after this function is applied |
| Return | |
|---|---|
| BiFunction<T, U, V>! | a composed function that first applies this function and then applies the after function |
| Exceptions | |
|---|---|
| java.lang.NullPointerException | if after is null |
apply
abstract fun apply(
t: T,
u: U
): R
Applies this function to the given arguments.
| Parameters | |
|---|---|
| t | T: the first function argument |
| u | U: the second function argument |
| Return | |
|---|---|
| R | the function result |
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Last updated 2025-02-10 UTC.