io.druid.java.util.common.collect

Class Utils

java.lang.Object

io.druid.java.util.common.collect.Utils

public class Utils
extends Object

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Modifier and Type	Method and Description
static <T> List<T>	nullableListOf(T... elements)
static <K,V> Map<K,V>	zipMap(Iterable<K> keys, Iterable<V> values) Create a Map from iterables of keys and values.
static <K,V> Map<K,V>	zipMap(K[] keys, V[] values)
static <K,V> Map<K,V>	zipMapPartial(Iterable<K> keys, Iterable<V> values) Create a Map from iterables of keys and values.
static <K,V> Map<K,V>	zipMapPartial(K[] keys, V[] values)

Methods inherited from class java.lang.Object

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

Constructor Detail

Utils

public Utils()

Method Detail

zipMap

public static <K,V> Map<K,V> zipMap(K[] keys,
                                    V[] values)

zipMapPartial

public static <K,V> Map<K,V> zipMapPartial(K[] keys,
                                           V[] values)

zipMap

public static <K,V> Map<K,V> zipMap(Iterable<K> keys,
                                    Iterable<V> values)

Create a Map from iterables of keys and values. Will throw an exception if there are more keys than values, or more values than keys.

zipMapPartial

public static <K,V> Map<K,V> zipMapPartial(Iterable<K> keys,
                                           Iterable<V> values)

Create a Map from iterables of keys and values. If there are more keys than values, or more values than keys, the excess will be omitted.

nullableListOf

@SafeVarargs
public static <T> List<T> nullableListOf(@Nullable
                                                      T... elements)