Question

I am trying to figure a way to loop through a template argument list but without success

I cannot use c++11 variadic template feature and it need it to be done at compile time

I can assume there will be no positive argument after a negative one

any idea ?

template< int F1, int F2 ,int F3>
struct TemplatedClass
{
    TemplatedClass();
    update()
    {
        /* 
          for each positive template argument 
             call a method
        */
    }
};

Answer 1

Since you will have a finite number of template arguments, you can use a series of if statements.

template<int F1, int F2 ,int F3> 
struct TemplatedClass 
{ 
    TemplatedClass(); 
    update() 
    {
    if (F1 > 0) myfunc(); 
    if (F2 > 0) myfunc(); 
    if (F3 > 0) myfunc(); 
        // etc.*  
    } 
}