I need to free memory from a container with elements of pointers, where the
container value_type is a pointer type. I cannot use the checked_delete
template as it is, as the template parameter is defined without the '*'
pointer.
For example, the following fails (obviously):
typedef std::vector X;
X x;
...
std::for_each(x.begin(),
x.end(),
boost::checked_delete);
I'm using VC7, so have no partial specialization available, so using the
type traits library remove_pointer<> does not work:
typedef boost::remove_pointer<typename X::value_type>::type type;
std::for_each(x.begin(),
x.end(),
boost::checked_delete<type>);
My existing solution uses a unary functor, as below, but this met with
critism on the Boost Developers' list. What would be the 'boost' solution to
this problem?
template<typename T>
class free_heap_ptr : public std::unary_function
{
public:
free_heap_ptr() { }
~free_heap_ptr() { }
void operator() (T p)
{
delete p;
}
};
...
std::for_each(changes_.begin(),
changes_.end(),
free_heap_ptr<typename change_list::value_type>());
TIA
-- Craig
