57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
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#include "rxcpp/rx.hpp"
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#include "rxcpp/rx-test.hpp"
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#include "catch.hpp"
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#include <sstream>
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SCENARIO("group_by sample"){
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printf("//! [group_by sample]\n");
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auto values = rxcpp::observable<>::range(0, 8).
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group_by(
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[](int v){return v % 3;},
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[](int v){return 10 * v;});
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values.
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subscribe(
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[](rxcpp::grouped_observable<int, int> g){
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auto key = g.get_key();
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printf("OnNext: key = %d\n", key);
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g.subscribe(
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[key](int v){printf("[key %d] OnNext: %d\n", key, v);},
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[key](){printf("[key %d] OnCompleted\n", key);});
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},
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[](){printf("OnCompleted\n");});
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printf("//! [group_by sample]\n");
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}
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//! [group_by full intro]
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static bool less(int v1, int v2){
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return v1 < v2;
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}
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//! [group_by full intro]
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SCENARIO("group_by full sample"){
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printf("//! [group_by full sample]\n");
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auto data = rxcpp::observable<>::range(0, 8).
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map([](int v){
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std::stringstream s;
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s << "Value " << v;
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return std::make_pair(v % 3, s.str());
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});
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auto values = data.group_by(
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[](std::pair<int, std::string> v){return v.first;},
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[](std::pair<int, std::string> v){return v.second;},
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less);
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values.
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subscribe(
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[](rxcpp::grouped_observable<int, std::string> g){
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auto key = g.get_key();
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printf("OnNext: key = %d\n", key);
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g.subscribe(
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[key](const std::string& v){printf("[key %d] OnNext: %s\n", key, v.c_str());},
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[key](){printf("[key %d] OnCompleted\n", key);});
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},
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[](){printf("OnCompleted\n");});
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printf("//! [group_by full sample]\n");
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}
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