char *str = new char[64];
delete str;
Edited by - Diodor on November 9, 2001 3:49:29 AM
Lazy question : delete or delete[] ?
Author
What's the difference between delete and delete[] ? Will there be any harm if I use one instead of the other like this:
Edited by - Diodor on November 9, 2001 3:49:29 AM
Edited by - Diodor on November 9, 2001 3:49:29 AM
In that case it doesn''t matter, but you should use the [] if you created an array with new (with a [] ) and not a single item.
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) and not a single item. [Resist Windows XP''s Invasive Production Activation Technology!]
Author
Well, new char[64]; does have a nice pair of [s in there 
So when is new[] allocating a single memory block (new char[64] does) and when is it allocating separate memory for separate objects? Does it have to do with C++ classes?
So when is new[] allocating a single memory block (new char[64] does) and when is it allocating separate memory for separate objects? Does it have to do with C++ classes?
New always allocates a single contiguous block of memory. Delete has to call all of the destructors for you, so it needs to know if it is an array or not (theoretically, it doesn''t matter often in reality, but it is better to be safe).
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Hi,
If you were to use "new char", then just use "delete".
But since you used "new char [64]" you should use "delete []".
If you were to use "new char", then just use "delete".
But since you used "new char [64]" you should use "delete []".
oK, why so much thinking in this.
Use "delete" and you only clear the first value(I bet thats not the right word) in the array, use delete[] and you release all of the values.
Thus by using only "delete" with an array your slowly wasting all of the systems memory.
Use "delete" and you only clear the first value(I bet thats not the right word) in the array, use delete[] and you release all of the values.
Thus by using only "delete" with an array your slowly wasting all of the systems memory.
delete[] calls the destructor of all the objects allocated with new[], while delete only call the destructor of the first object.
But if the object that you''re constructing doesn''t do anything in the destructor, then delete[] and delete are the same, but is more correct to use delete[].
But if the object that you''re constructing doesn''t do anything in the destructor, then delete[] and delete are the same, but is more correct to use delete[].
I always use delete{}. It does a delete[] on delete. IMHO it calls all available destructors of the current system and then it is shut down (This is AFAIK a bug in Windows).
Kneelz
Kneelz
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