text: #include "rxcpp/rx.hpp"
  
  #include "rxcpp/rx-test.hpp"
  #include "catch.hpp"
  
  SCENARIO("first sample"){
      printf("//! [first sample]\n");
      auto values = rxcpp::observable<>::range(1, 3).first();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [first sample]\n");
  }
  
  #if RXCPP_USE_EXCEPTIONS
  SCENARIO("first empty sample"){
      printf("//! [first empty sample]\n");
      auto values = rxcpp::observable<>::empty<int>().first();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const rxcpp::empty_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [first empty sample]\n");
  }
  #endif
  
  SCENARIO("last sample"){
      printf("//! [last sample]\n");
      auto values = rxcpp::observable<>::range(1, 3).last();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [last sample]\n");
  }
  
  #if RXCPP_USE_EXCEPTIONS
  SCENARIO("last empty sample"){
      printf("//! [last empty sample]\n");
      auto values = rxcpp::observable<>::empty<int>().last();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const rxcpp::empty_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [last empty sample]\n");
  }
  #endif
  
  SCENARIO("count sample"){
      printf("//! [count sample]\n");
      auto values = rxcpp::observable<>::range(1, 3).count();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [count sample]\n");
  }
  
  #if RXCPP_USE_EXCEPTIONS
  SCENARIO("count error sample"){
      printf("//! [count error sample]\n");
      auto values = rxcpp::observable<>::range(1, 3).
          concat(rxcpp::observable<>::error<int>(std::runtime_error("Error from source"))).
          count();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const std::runtime_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [count error sample]\n");
  }
  #endif
  
  SCENARIO("sum sample"){
      printf("//! [sum sample]\n");
      auto values = rxcpp::observable<>::range(1, 3).sum();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [sum sample]\n");
  }
  
  #if RXCPP_USE_EXCEPTIONS
  SCENARIO("sum empty sample"){
      printf("//! [sum empty sample]\n");
      auto values = rxcpp::observable<>::empty<int>().sum();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const rxcpp::empty_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [sum empty sample]\n");
  }
  #endif
  
  SCENARIO("sum error sample"){
      printf("//! [sum error sample]\n");
      auto values = rxcpp::observable<>::range(1, 3).
          concat(rxcpp::observable<>::error<int>(std::runtime_error("Error from source"))).
          sum();
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const std::runtime_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [sum error sample]\n");
  }
  
  SCENARIO("average sample"){
      printf("//! [average sample]\n");
      auto values = rxcpp::observable<>::range(1, 4).average();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [average sample]\n");
  }
  
  #if RXCPP_USE_EXCEPTIONS
  SCENARIO("average empty sample"){
      printf("//! [average empty sample]\n");
      auto values = rxcpp::observable<>::empty<int>().average();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const rxcpp::empty_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [average empty sample]\n");
  }
  #endif
  
  SCENARIO("average error sample"){
      printf("//! [average error sample]\n");
      auto values = rxcpp::observable<>::range(1, 4).
          concat(rxcpp::observable<>::error<int>(std::runtime_error("Error from source"))).
          average();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const std::runtime_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [average error sample]\n");
  }
  
  SCENARIO("max sample"){
      printf("//! [max sample]\n");
      auto values = rxcpp::observable<>::range(1, 4).max();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [max sample]\n");
  }
  
  #if RXCPP_USE_EXCEPTIONS
  SCENARIO("max empty sample"){
      printf("//! [max empty sample]\n");
      auto values = rxcpp::observable<>::empty<int>().max();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const rxcpp::empty_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [max empty sample]\n");
  }
  #endif
  
  SCENARIO("max error sample"){
      printf("//! [max error sample]\n");
      auto values = rxcpp::observable<>::range(1, 4).
          concat(rxcpp::observable<>::error<int>(std::runtime_error("Error from source"))).
              max();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const std::runtime_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [max error sample]\n");
  }
  
  SCENARIO("min sample"){
      printf("//! [min sample]\n");
      auto values = rxcpp::observable<>::range(1, 4).min();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [min sample]\n");
  }
  
  #if RXCPP_USE_EXCEPTIONS
  SCENARIO("min empty sample"){
      printf("//! [min empty sample]\n");
      auto values = rxcpp::observable<>::empty<int>().min();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const rxcpp::empty_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [min empty sample]\n");
  }
  #endif
  
  SCENARIO("min error sample"){
      printf("//! [min error sample]\n");
      auto values = rxcpp::observable<>::range(1, 4).
          concat(rxcpp::observable<>::error<int>(std::runtime_error("Error from source"))).
              min();
      values.
          subscribe(
              [](double v){printf("OnNext: %lf\n", v);},
              [](std::exception_ptr ep){
                  try {std::rethrow_exception(ep);}
                  catch (const std::runtime_error& ex) {
                      printf("OnError: %s\n", ex.what());
                  }
              },
              [](){printf("OnCompleted\n");});
      printf("//! [min error sample]\n");
  }
  