Package org.optaplanner.core.api.function

## Interface ToLongQuadFunction<A,​B,​C,​D>

- Type Parameters:
    `A` - the type of the first argument to the function
    `B` - the type of the second argument to the function
    `C` - the type of the third argument to the function
    `D` - the type of the fourth argument to the function
  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 ToLongQuadFunction<A,​B,​C,​D>

  Represents a function that accepts four arguments and produces a long-valued result. This is the `long`-producing primitive specialization for `QuadFunction`.

  This is a functional interface whose functional method is `applyAsLong(Object, Object, Object, Object)`.

  See Also:
    `QuadFunction`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `long` | `applyAsLong​(A a, B b, C c, D d)` | Applies this function to the given arguments.

- - ### Method Detail

    - #### applyAsLong

          long applyAsLong​(A a,
                           B b,
                           C c,
                           D d)

      Applies this function to the given arguments.
      Parameters:
        `a` - the first function argument
        `b` - the second function argument
        `c` - the third function argument
        `d` - the fourth function argument
      Returns:
        the function result