rx-scan.hpp File Reference

For each item from this observable use Accumulator to combine items into a value that will be emitted from the new observable that is returned. More...

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

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Classes
struct	rxcpp::member_overload< scan_tag >

Namespaces
	rxcpp
	rxcpp::operators

Macros
#define	RXCPP_OPERATORS_RX_SCAN_HPP

Functions
template<class... AN>
auto	rxcpp::operators::scan (AN &&...an) -> operator_factory< scan_tag, AN... >
	For each item from this observable use Accumulator to combine items into a value that will be emitted from the new observable that is returned. More...

Detailed Description

For each item from this observable use Accumulator to combine items into a value that will be emitted from the new observable that is returned.

Template Parameters

Seed	the type of the initial value for the accumulator.
Accumulator	the type of the data accumulating function.

Parameters

seed	the initial value for the accumulator.
a	an accumulator function to be invoked on each item emitted by the source observable, whose result will be emitted and used in the next accumulator call.

Returns

An observable that emits the results of each call to the accumulator function.

Sample Code

    auto values = rxcpp::observable<>::range(1, 7).
        scan(
            0,
            [](int seed, int v){
                return seed + v;
            });
    values.
        subscribe(
            [](int v){printf("OnNext: %d\n", v);},
            [](){printf("OnCompleted\n");});

OnNext: 1
OnNext: 3
OnNext: 6
OnNext: 10
OnNext: 15
OnNext: 21
OnNext: 28
OnCompleted

Macro Definition Documentation

#define RXCPP_OPERATORS_RX_SCAN_HPP