Re: How to store C Arrays as a Property or iVar?


 


On Aug 18, 2017, at 12:07 PM, Dave <dave@...> wrote:

But I get an error if I try to assign or read it, as in:

myArray = _mArray;

You can't assign (or compare) arrays in C/C++. You have two options:

(a) Call memcpy:
memcpy(&myArray, &_mArray, sizeof(myArray));

(b) Wrap a struct around the array, since structs are copyable. Drawback is that you now have to refer to the array as a named field of the struct.
typedef struct {
int [10][10]  a;
} MyArrayType;
MyArrayType myArray;
_mArray = myArray;

(This is a pure C issue, so a book like K&R would be helpful.)

—Jens

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