Loki::Function

Hi group!

I read the FunctionTest.cpp in /test directory and see this:

struct X
{
    X(int x);
    int plus(int x);
};
// ...

X one(1);
Loki::Function<int (int)> f2(&one,&X::plus);

It works fine and so I write some similar code for std::vector<int> as
follows:

vector<int> primTable;

Function< size_t () > p_size(&primTable, &vector<int>::size ); //
O.K.
Function< vector<int>::reference (size_t)> p_ref(&primTable,
&vector<int>::at); // generate compile error

Error:

error: no matching function for call to 'Loki::Function<int& ()
(size_t)>::Function(std::vector<int, std::allocator<int> >*,
<unresolved overloaded function type>)'

/home/yangacer/NameDB/loki/include/loki/Function.h:156: note:
candidates are: Loki::Function<R ()(P01)>::Function(int) [with R =
int&, P01 = size_t]

/home/yangacer/NameDB/loki/include/loki/Function.h:156: note:
Loki::Function<R ()(P01)>::Function(const Loki::Function<R ()(P01)>&)
[with R = int&, P01 = size_t]

/home/yangacer/NameDB/loki/include/loki/Function.h:156: note:
Loki::Function<R ()(P01)>::Function() [with R = int&, P01 = size_t]

Is this a known issue or I miss-understood something?

Thanks for your time :-)

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