de.caff.generics

Class IndexableHelper

java.lang.Object

de.caff.generics.IndexableHelper

class IndexableHelper
extends java.lang.Object

Helper class for indexables. This class provides methods used for indexables.

Since:

Dezember 10, 2021

Author:

Rammi

Method Summary

Modifier and Type	Method and Description
(package private) static <T> Indexable<T>	frozenFromArray(T[] array)
(package private) static <T> Indexable<T>	frozenFromList(java.util.List<T> list) Create a frozen indexable from a list.
(package private) static <T> Indexable<T>	frozenFromList(java.util.List<T> list, java.util.function.Function<? super T,? extends T> elementCloner) Create a frozen indexable from a list while keeping possibly mutable elements safe.

Methods inherited from class java.lang.Object

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

Method Detail

frozenFromList

@NotNull
static <T> Indexable<T> frozenFromList(@NotNull
                                                java.util.List<T> list)

Create a frozen indexable from a list. This assumes that the list will never be changed.

Type Parameters:

T - element type of indexable/list

Parameters:

list - list to be wrapped by an indexable

Returns:

indexable based on list, which will return itself on frozen and will include further optimizations for an unmodified list

frozenFromList

@NotNull
static <T> Indexable<T> frozenFromList(@NotNull
                                                java.util.List<T> list,
                                                @NotNull
                                                java.util.function.Function<? super T,? extends T> elementCloner)

Create a frozen indexable from a list while keeping possibly mutable elements safe. This assumes that the list will never be changed. It also takes care of mutable elements by copying them on each request, so the elements in the returned indexable will never change.

Type Parameters:

T - element type of indexable/list

Parameters:

list - list to be wrapped by an indexable

elementCloner - function called for each requested element which returns a copy it

Returns:

indexable based on list, which will return itself on frozen and will include further optimizations for an unmodified list

frozenFromArray

static <T> Indexable<T> frozenFromArray(@NotNull
                                        T[] array)