Function that takes an STL iterator over ANY container of a elements of a specific type

Question

How would I define a function that takes as input an iterator over any type of STL container, but only to those of a specific templated type. For example:

Any iterator o

Answer 1

Another way with templates is to trigger a static assertion if the condition is not met.

#include 
#include     
#include 

template 
void foo(Iter from, Iter to)
{
    BOOST_STATIC_ASSERT((boost::is_same::value_type, Type>::value));
    //...
}

int main()
{
    int arr[10];
    foo(arr, arr + 10);    //OK
    foo(arr, arr + 10); //triggers static assertion
}

If you want to do away with templates, then it is also possible to write an "any_iterator" using type erasure. For example, like this on: http://stlab.adobe.com/classadobe_1_1any__iterator.html