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Hi All,

I was working on a dummy routine to fill up an array with random
numbers using function templates but jst hit a road block. I jst cant
get the code below to compile with MSVC 2010 compiler. I m not sure if
i m using the correct template specialization syntax here. So please
provide me some insight as to what is wrong here:

<code>
template <int * arr, int size> void randfill()
{
arr[size]=rand();
randfill<arr,size-1>();
}

template<int * arr> void randfill<arr,0>()
{
return;
}//<!-- error is here

//template instantiation code
int arr[10];
randfill<arr,10>();
</code>

the compilation error i m getting is stl.cpp(35) : error C2768:
'randfill' : illegal use of explicit template arguments.

Thanks in advance,
VJ

vj wrote:

> I was working on a dummy routine to fill up an array with random
> numbers using function templates but jst hit a road block. I jst cant
> get the code below to compile with MSVC 2010 compiler. I m not sure if
> i m using the correct template specialization syntax here. So please
> provide me some insight as to what is wrong here:
>
> <code>
> template <int * arr, int size> void randfill()
> {
> arr[size]=rand();
> randfill<arr,size-1>();
> }
>
> template<int * arr> void randfill<arr,0>()
> {
> return;
> }//<!-- error is here
>
> //template instantiation code
> int arr[10];
> randfill<arr,10>();
> </code>
>
> the compilation error i m getting is stl.cpp(35) : error C2768:
> 'randfill' : illegal use of explicit template arguments.

Your indices are off by 1.

Why do you want to make arr a template parameter instead of a regular
function argument?

Functions don't have partial specialization, only full specialization
and overloading. One common workaround is to use a class instead.
Another one is to pass you randfill function an argument of type
integral_constant<int,size> and overload.