CoRoutine -> A regular coroutine that can return any value (or void)
CoGenerator -> A regular generator type function.

- The classes provided with the package expose "traditional" Upp-like interface (Do(), Get(), Pick() and Next() -methods, depending on their type.) 

- Allows exception handling and propagation.

- Also an example code is included.

#include <Core/Core.h>
#include "CoRoutine.h"

using namespace Upp;

CoRoutine<Vector<int>> CoMakeIota(int begin, int end, int step)
{
	Vector<int> v;
	for(int i = begin; i < end; i += step) {
		v.Add(i);
		RLOG(__func__);
		co_await CoSuspend();
	}
	co_return v;
}

CoGenerator<int> CoGenerateNumbers()
{
	int i = 0;
	for(;;) {
		RLOG(__func__);
		co_yield i++;
	}
}

CONSOLE_APP_MAIN
{
	StdLogSetup(LOG_COUT|LOG_FILE);

	auto co1 = CoMakeIota(0, 10, 2);
	auto co2 = CoGenerateNumbers();
	
	try {
		while(co1.Do())
			RLOG(__func__); // NOP;
		auto v = co1.Pick();
		RDUMP(v);
		
		for(int i = 0; i < 10; i = co2.Next())
			RDUMP(i);
	}
    catch(...) {
        RLOG("Unhandled exception");
    }

}