如何在（objective-c）中为（c++）中的 integer 动态分配 memory？

Question

How can I dynamically allocate memory for an integer in (objective-c) like (c++)?

example c++ code:

n = 25;

int *p;
p = new int[n];

thanks

-this snippet of code will be cycled with dynamically changing sizes (I need to set the size) and will need to be able to declare as integer or long, "NSNumber" may become too slow and use up too much memory in type changes.

Answer 1

Your problem is this assumption:

"NSNumber" may become too slow and use up too much memory in type changes.

I would recommend using NSNumber until you have empirical evidence proving that the object wrapper is causing a bottleneck in your code. Until then, you're prematurely optimizing.

The general rule is:

1. Make it work.
2. Make it fast.

You're trying to reverse those steps. Don't.

Answer 2

NSNumber* myNumber = [[NSNumber alloc] initWithInt:1234];
// ...
[myNumber release];

Answer 3

int n = 25;
int *p = calloc(n, sizeof(int));
//...
free(p);