Package zone.lamprey.function

Interface DoublePredicate

All Superinterfaces:
DoubleFunction<Boolean>, DoubleFunction<Boolean>, DoublePredicate, Function<Double,​Boolean>, Function<Double,​Boolean>, Predicate<Double>, Predicate<Double>
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 DoublePredicate
extends Predicate<Double>, DoubleFunction<Boolean>, DoublePredicate
Represents a predicate (boolean-valued function) of one double-valued argument. This is the double-consuming primitive type specialization of Predicate.

This is a functional interface whose functional method is test(double).

Since:
1.8
See Also:
Predicate

  • Method Details

    • test

      boolean test​(double value)
      Evaluates this predicate on the given argument.
      Specified by:
      test in interface DoublePredicate
      Parameters:
      value - the input argument
      Returns:
      true if the input argument matches the predicate, otherwise false

    • test

      default boolean test​(Double t)
      Evaluates this predicate on the given argument.
      Specified by:
      test in interface Predicate<Double>
      Specified by:
      test in interface Predicate<Double>
      Parameters:
      t - the input argument
      Returns:
      true if the input argument matches the predicate, otherwise false

    • apply

      default Boolean apply​(double value)
      Applies this function to the given argument.
      Specified by:
      apply in interface DoubleFunction<Boolean>
      Specified by:
      apply in interface DoubleFunction<Boolean>
      Parameters:
      value - the function argument
      Returns:
      the function result

    • apply

      default Boolean apply​(Double value)
      Applies this function to the given argument.
      Specified by:
      apply in interface DoubleFunction<Boolean>
      Specified by:
      apply in interface Function<Double,​Boolean>
      Specified by:
      apply in interface Function<Double,​Boolean>
      Specified by:
      apply in interface Predicate<Double>
      Parameters:
      value - the function argument
      Returns:
      the function result

    • applyPartial

      default BooleanSupplier applyPartial​(double t)
      Partially apply a parameter such that a single param function becomes a no-param supplier.
      Specified by:
      applyPartial in interface DoubleFunction<Boolean>
      Parameters:
      t - The parameter to apply.
      Returns:
      A partially-applied function.

    • and

      default DoublePredicate and​(DoublePredicate other)
      Returns a composed predicate that represents a short-circuiting logical AND of this predicate and another. When evaluating the composed predicate, if this predicate is false, then the other predicate is not evaluated.

      Any exceptions thrown during evaluation of either predicate are relayed to the caller; if evaluation of this predicate throws an exception, the other predicate will not be evaluated.

      Parameters:
      other - a predicate that will be logically-ANDed with this predicate
      Returns:
      a composed predicate that represents the short-circuiting logical AND of this predicate and the other predicate
      Throws:
      NullPointerException - if other is null

    • mapToPredicate

      default DoublePredicate mapToPredicate​(Predicate<? super Boolean> functor)
      Lift a function.
      Specified by:
      mapToPredicate in interface DoubleFunction<Boolean>
      Specified by:
      mapToPredicate in interface Function<Double,​Boolean>
      Specified by:
      mapToPredicate in interface Predicate<Double>
      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.

    • negate

      default DoublePredicate negate()
      Returns a predicate that represents the logical negation of this predicate.
      Specified by:
      negate in interface DoublePredicate
      Specified by:
      negate in interface Predicate<Double>
      Specified by:
      negate in interface Predicate<Double>
      Returns:
      a predicate that represents the logical negation of this predicate

    • or

      default DoublePredicate or​(DoublePredicate other)
      Returns a composed predicate that represents a short-circuiting logical OR of this predicate and another. When evaluating the composed predicate, if this predicate is true, then the other predicate is not evaluated.

      Any exceptions thrown during evaluation of either predicate are relayed to the caller; if evaluation of this predicate throws an exception, the other predicate will not be evaluated.

      Parameters:
      other - a predicate that will be logically-ORed with this predicate
      Returns:
      a composed predicate that represents the short-circuiting logical OR of this predicate and the other predicate
      Throws:
      NullPointerException - if other is null