Package zone.lamprey.function

Interface BinaryOperator<T>

Type Parameters:
T - the type of the operands and result of the operator
All Superinterfaces:
BiFunction<T,​T,​T>, BiFunction<T,​T,​T>, BinaryOperator<T>
All Known Subinterfaces:
DoubleBinaryOperator, IntBinaryOperator, LongBinaryOperator
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface
public interface BinaryOperator<T>
extends BiFunction<T,​T,​T>, BinaryOperator<T>
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 BiFunction.apply(Object, Object).

Since:
1.8
See Also:
BiFunction, UnaryOperator

  • Method Details

    • applyPartialL

      default UnaryOperator<T> applyPartialL​(T t)
      Performs a partial application, resulting in a function that calls this with its argument and the argument given here.
      Specified by:
      applyPartialL in interface BiFunction<T,​T,​T>
      Parameters:
      t - the function argument
      Returns:
      the function result

    • applyPartialR

      default UnaryOperator<T> applyPartialR​(T u)
      Performs a partial application, resulting in a function that calls this with its argument and the argument given here.
      Specified by:
      applyPartialR in interface BiFunction<T,​T,​T>
      Parameters:
      u - the function argument
      Returns:
      the function result

    • minBy

      static <T> BinaryOperator<T> minBy​(Comparator<? super T> comparator)
      Returns a BinaryOperator which returns the lesser of two elements according to the specified Comparator.
      Type Parameters:
      T - the type of the input arguments of the comparator
      Parameters:
      comparator - a Comparator for comparing the two values
      Returns:
      a BinaryOperator which returns the lesser of its operands, according to the supplied Comparator
      Throws:
      NullPointerException - if the argument is null

    • maxBy

      static <T> BinaryOperator<T> maxBy​(Comparator<? super T> comparator)
      Returns a BinaryOperator which returns the greater of two elements according to the specified Comparator.
      Type Parameters:
      T - the type of the input arguments of the comparator
      Parameters:
      comparator - a Comparator for comparing the two values
      Returns:
      a BinaryOperator which returns the greater of its operands, according to the supplied Comparator
      Throws:
      NullPointerException - if the argument is null

    • map

      default BinaryOperator<T> map​(UnaryOperator<T> functor)
      Lift a function.
      Parameters:
      functor - The function to use in lifting.
      Returns:
      A function that passes the result of fn through a functor to produce a lifted function.