C++程序  |  17行  |  438 B

#include "rxcpp/rx.hpp"

#include "rxcpp/rx-test.hpp"
#include "catch.hpp"

SCENARIO("take_while sample"){
    printf("//! [take_while sample]\n");
    auto values = rxcpp::observable<>::range(1, 8).
        take_while([](int v){
            return v <= 4;
        });
    values.
        subscribe(
            [](int v){printf("OnNext: %d\n", v);},
            [](){printf("OnCompleted\n");});
    printf("//! [take_while sample]\n");
}