Re: Dynamically allocated typedef'd array -- how to delete?

"Lance Diduck" <>
Wed, 28 Mar 2007 13:08:48 CST
On Mar 28, 12:29 pm, "Risto Lankinen" <> wrote:


Considering these declarations...

struct Res { /* Uses RAII, hence must be destructed appropriately!
*/ };
typedef Res Res_Array[256];

... and an allocation...

Res_Array *pArray = new Res_Array;

... then which of the following is the appropriate deletion:

delete pArray;
delete[] pArray;


 - Risto -

The best way is to avoid ever using delete[];
Assuming you dont want to use std::vector
The easy answer is to use tr1::array
typedef tr1::array<256> Res_Array;

And another method is making a selector
template <class T, bool _Dummy>
struct _deleter{
void operator()(T*d){delete d;}
template <class T>
struct _deleter<true>{
void operator()(T*d){delete[] d;}
template <class T> void DeleteMe(T*d){
All of these should work without ever having to really know the
answer. The point is that the less details we have to keep up with
upon freeing an object, the better.


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