[C++-sig] Re: implicitly_convertible

[aashish]

Hi, 

I wanted to have a function like this where when I pass a list I will either
get return as set of integers or std::vector of double. 

I tried to implement the function in this manner .....

C++--------------------------------
int make_vector(bp::list vlist)
{
	//std::vector<double> vector_list;
	int k = extract<int>(vlist.attr("__len__")());	
	
	/*for (int i=0;i<10;i++)
	{
	
vector_list.push_back(extract<double>(lt.attr("__getitem__")(i)));
	}

	return vector_list;*/
	
	int kk = extract<int>(vlist.attr("__getitem__")(0));
	
	return kk;
}
Python-----------------------------

L = ['1','2','3']
a = make_vector(L)
print a

The problem is that I am getting the correct value for 'k' here but then it
does throws error saying that 

Tracekack(most recent call last)
File "pytest2.py" , line 30, in ?
	A = "make.vector"(L)
Typeerror: No registered converter was able to produce a C++ rvalue of type
int from this Python object of type str. 

Now what does this error mean?? And How can sole this problem. 

Thanks. 

~regards,
Aashish