Re: pointers in objective-c?
Re: pointers in objective-c?
- Subject: Re: pointers in objective-c?
- From: "mm w" <email@hidden>
- Date: Sat, 2 Aug 2008 09:50:09 -0700
Hi I'm sorry, it's not a confusion, it's only a bad knowledge of C, and
"pointers" are not understood, NS and what about CF or every-prefix in the world
of frameworks gtk_object ... kobject ...
#include <stdio.h>
long __auto_increment = 0;
typedef struct {
long *addr;
void *value;
} Object;
Object ObjectNew(void *value) {
Object obj;
long i = __auto_increment++;
obj.addr = &i;
obj.value = value;
return obj;
}
int main (void) {
Object obj;
Object *obj_1;
Object *obj_2;
char *value = "hello world!";
obj = ObjectNew(value);
obj_1 = &obj;
obj_2 = obj_1;
printf("obj_1.addr = %x, obj_1.value = %s \n",
obj_1->addr, obj_1->value);
printf("obj_2.addr = %x, obj_2.value = %s \n",
obj_1->addr, obj_1->value);
return 0;
}
On Sat, Aug 2, 2008 at 12:05 AM, Negm-Awad Amin <email@hidden> wrote:
> Hi,
>
> Am Fr,01.08.2008 um 22:07 schrieb Giulio Cesare Solaroli:
>
>> On Fri, Aug 1, 2008 at 10:01 PM, Clark Cox <email@hidden> wrote:
>>>
>>> On Fri, Aug 1, 2008 at 12:38 PM, Arthur Coleman <email@hidden>
>>> wrote:
>>>>
>>>> I hate to be dense, but what about C structs like NSRect? There are
>>>> initialized on the stack aren't they?
>>>
>>> They're C structs, they aren't Objective-C objects.
>>
>> That's very true, but the common NS prefix used by both full obj-c
>> classes and simple C structures may lead to some confusion, mainly for
>> someone learning obj-c and Cocoa.
>
> yup, sometimes people are confused about the NS-prefix. But NS means
> NextStep, so refers to the framework *not* to the type. It is no good idea
> to use hungarian notation in objective-c.
>
> Amin
>
>>
>>
>> Giulio Cesare
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>
> Amin Negm-Awad
> email@hidden
>
>
>
>
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--
-mmw
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