Package org.javagi.interop

Class VarargsUtil

java.lang.Object

org.javagi.interop.VarargsUtil

@NullMarked
public class VarargsUtil
extends Object

Utility functions to split an array of variadic arguments into a first argument and a null-terminated array of remaining arguments.

Constructor Summary

Constructors

Constructor	Description
VarargsUtil()

Method Summary

Modifier and Type	Method	Description
static <T> @Nullable T	first(@Nullable T @Nullable [] array)	Return the first array element.
static <T> @Nullable T @Nullable []	rest(@Nullable T @Nullable [] array)	Return all but the first array elements, terminated with a null.

Methods inherited from class java.lang.Object

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

Constructor Details

VarargsUtil

public VarargsUtil()

Method Details

first

public static <T> @Nullable T first(@Nullable T @Nullable [] array)

Return the first array element.

Type Parameters:

T - array element type

Parameters:

array - input array, can be null

Returns:

the first element, or null if the input array is null or empty

rest

public static <T> @Nullable T @Nullable [] rest(@Nullable T @Nullable [] array)

Return all but the first array elements, terminated with a null. For example, [1, 2, 3] returns [2, 3, null].

Type Parameters:

T - array element type

Parameters:

array - input array, can be null

Returns:

a new array of all elements except the first, terminated with a null, or null if the input array is null or empty