rx-distinct.hpp File Reference

For each item from this observable, filter out repeated values and emit only items that have not already been emitted. More...

#include "../rx-includes.hpp"

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Classes
struct	rxcpp::member_overload< distinct_tag >

Namespaces
	rxcpp
	rxcpp::operators

Macros
#define	RXCPP_OPERATORS_RX_DISTINCT_HPP

Functions
template<class... AN>
auto	rxcpp::operators::distinct (AN &&...an) -> operator_factory< distinct_tag, AN... >
	For each item from this observable, filter out repeated values and emit only items that have not already been emitted. More...

Detailed Description

For each item from this observable, filter out repeated values and emit only items that have not already been emitted.

Returns

Observable that emits those items from the source observable that are distinct.

Note

istinct keeps an unordered_set<T> of past values. Due to an issue in multiple implementations of std::hash<T>, rxcpp maintains a whitelist of hashable types. new types can be added by specializing rxcpp::filtered_hash<T>

Sample Code

    auto values = rxcpp::observable<>::from(1, 2, 2, 3, 3, 3, 4, 5, 5).distinct();
    values.
        subscribe(
            [](int v){printf("OnNext: %d\n", v);},
            [](){printf("OnCompleted\n");});

OnNext: 1
OnNext: 2
OnNext: 3
OnNext: 4
OnNext: 5
OnCompleted

Macro Definition Documentation

#define RXCPP_OPERATORS_RX_DISTINCT_HPP