I want to write something like this:
@interface Foo{
__strong id idArray[];
}
@end
But the compiler complains about it:
Field has incomplete type '__strong id []'.
How can I create an id array member instance under ARC? And how do I init that array? Using malloc? new[]?
I don't want to use NSArray because I'm converting a large library to ARC and that will cause a lot of work.
If you want to allocate dynamically the array, use pointer type of id __strong.
@interface Foo
{
id __strong *idArray;
}
@end
Allocate the array using calloc. id __strong must be intialized with zero.
idArray = (id __strong *)calloc(sizeof(id), entries);
When you are done, you must set nil to the entries of the array, and free.
for (int i = 0; i < entries; ++i)
idArray[i] = nil;
free(idArray);
You have to specify an array size, e.g.:
__strong id idArray[20];
Either you give the array a fixed size:
__strong id idArray[20];
or you use a pointer and malloc:
__strong id *idArray;
...
self.idArray = calloc(sizeof(id), num);
