Array Sizes in Template Functions

From codegorilla

In template functions it is possible to determine the size of an array passed in using template parameters for the size.

This is just a simple example of how to use an array and a size as a parameter to a function and it only applies to compile time sized arrays.

template< typename T, size_t size >
size_t get_size( T const (&var_array)[size] )
{
    return size;
}

void main()
{
    char array[100];
    std::cout << "size is: " << get_size(array) << std::endl;
}