Package org.djutils.eval

Interface Function

All Superinterfaces:
Identifiable
All Known Implementing Classes:
F0, F1, F2
public interface Function extends Identifiable
Function.java. Description and implementation of a function that can be registered in and then executed by the Eval evaluator.

Copyright (c) 2023-2025 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djutils.org. The DJUTILS project is distributed under a three-clause BSD-style license, which can be found at https://djutils.org/docs/license.html.

Author:
Peter Knoppers

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    function(Object[] arguments)
    The function itself.
    default String
    getDescription()
    Return a textual description of the function.
    MetaData
    getMetaData()
    Specifies the types of the arguments expected by the function.
    default String
    getName()
    Return the name of the function.

    Methods inherited from interface org.djutils.base.Identifiable

    getId

  • Method Details

    • getName

      default String getName()
      Return the name of the function.
      Returns:
      the name of the function

    • getDescription

      default String getDescription()
      Return a textual description of the function.
      Returns:
      description of the function (may use html tags).

    • getMetaData

      MetaData getMetaData()
      Specifies the types of the arguments expected by the function.
      Returns:
      specification of the arguments expected by the function

    • function

      Object function(Object[] arguments) throws RuntimeException
      The function itself.
      Parameters:
      arguments - the arguments of the function
      Returns:
      the result of the function (must currently be either some type of DoubleScalar or Boolean).
      Throws:
      RuntimeException - thrown when the function is unable to produce a result