Package nz.org.riskscape.util

Class ListUtils

java.lang.Object
nz.org.riskscape.util.ListUtils
public class ListUtils extends Object

Useful methods for fluid, immutable list operations.

These methods support null list elements, so can be used when evaluating riskscape expressions that have nullable types

  • Constructor Summary

    Constructors
    Constructor
    Description
    ListUtils()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static <T> List<T>
    append(List<? extends T> list, T element)
    Fluid, immutable list appending method that appends an element at the end of a given list, returning a new list
    static <T> List<T>
    concat(List<? extends T> list1, List<? extends T> list2)
    Fluid, immutable list concatenation method that concatenates two lists, returning a new list with the contents of list1 and list2 appended in order.
    static <T> List<T>
    prepend(T element, List<? extends T> list)
    Fluid, immutable list prepending method that prepends the given element to the given list, returning a new list
    static <T> List<T>
    prepend(T element, T... rest)
    Fluid, immutable list prepending method that prepends the given element to the given list, returning a new list

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • ListUtils

      public ListUtils()

  • Method Details

    • concat

      public static <T> List<T> concat(List<? extends T> list1, List<? extends T> list2)

      Fluid, immutable list concatenation method that concatenates two lists, returning a new list with the contents of list1 and list2 appended in order.

    • append

      public static <T> List<T> append(List<? extends T> list, T element)

      Fluid, immutable list appending method that appends an element at the end of a given list, returning a new list

    • prepend

      public static <T> List<T> prepend(T element, List<? extends T> list)

      Fluid, immutable list prepending method that prepends the given element to the given list, returning a new list

    • prepend

      @SafeVarargs public static <T> List<T> prepend(T element, T... rest)

      Fluid, immutable list prepending method that prepends the given element to the given list, returning a new list