Question

I want to know how I can pass a pointer to a struct to a custom init method of nsoperation. It seems to expect to be passed an item of type ID.

Is this possible to do?

typedef struct mystruct

{
   int a;
   int b;

}mystruct;

mystruct myitem;


MyNSOperation *op=[[MyNSOperation alloc]initwithdata:myitem]; //can't do this, not of type id


-(id)initwithdata:(mystruct *)thestruct

{


}

Answer 1

If you want to pass a struct as an object, you can use NSData

NSData *data = [NSData dataWithBytes:&myitem length:sizeof(myitem)];    

and get it back to a struct with

[data getBytes:&myitem length:sizeof(myitem)];

This is not architecture independent.