RxJava

rx.operators
Class OperationElementAt

java.lang.Object
  rx.operators.OperationElementAt

public class OperationElementAt
extends java.lang.Object

Returns the element at a specified index in a sequence.

Constructor Summary

OperationElementAt()

Method Summary

static <T> Observable.OnSubscribeFunc<T>	elementAt(Observable<? extends T> source, int index) Returns the element at a specified index in a sequence.
static <T> Observable.OnSubscribeFunc<T>	elementAtOrDefault(Observable<? extends T> source, int index, T defaultValue) Returns the element at a specified index in a sequence or the default value if the index is out of range.

Methods inherited from class java.lang.Object

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

Constructor Detail

OperationElementAt

public OperationElementAt()

Method Detail

elementAt

public static <T> Observable.OnSubscribeFunc<T> elementAt(Observable<? extends T> source,
                                                          int index)

Returns the element at a specified index in a sequence.

Parameters:

source - Observable sequence to return the element from.

index - The zero-based index of the element to retrieve.

Returns:

An observable sequence that produces the element at the specified position in the source sequence.

Throws:

java.lang.IndexOutOfBoundsException - Index is greater than or equal to the number of elements in the source sequence.

java.lang.IndexOutOfBoundsException - Index is less than 0.

elementAtOrDefault

public static <T> Observable.OnSubscribeFunc<T> elementAtOrDefault(Observable<? extends T> source,
                                                                   int index,
                                                                   T defaultValue)

Returns the element at a specified index in a sequence or the default value if the index is out of range.

Parameters:

source - Observable sequence to return the element from.

index - The zero-based index of the element to retrieve.

defaultValue - The default value.

Returns:

An observable sequence that produces the element at the specified position in the source sequence, or the default value if the index is outside the bounds of the source sequence.

Throws:

java.lang.IndexOutOfBoundsException - Index is less than 0.