Arrays of Primitives ..: objective-c, iPhone, cocoa, Cocoa

Arrays of Primitives ..

For some reason I'm having tremendous trouble doing what would seem to be ( in any other language besides objective-c ) to be no-brainer.

All I want to do is pass an array of float values, or any primitive data type, back and forth between functions. That array does not always have a constant size, if it matters.

See code snipped below... I know it definitely wont compile, but I'm just trying to show my purpose.
Why must this be so difficult!??!

How hard can this be??!? I'm just not finding any good examples is all, so I figured I would come ask the experts!... Thanks

//This is all I want to be able to do
 
float[] values = someObject.values;
 
...
@interface SomeObject
{
   ...
   float[] values;
   ...
}
 
@property float[] values;
 
@end

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You're not fully correct this is not a no-brainer in many languages. But there are ways just take this

int *field_of_ints = {1,2,3,4,5,6};

that's fine but there is not assignment for array in C, you either have to do:
int *another_field = field_of_ints
But that won't copy the field entries, it's just another reference to the same location.

Of you have to write an "assignment" yoursel.

int * copy_of_field (int * field, int size) {
int * result = malloc(sizeof(*field) * size);
for (i = 0; i < size; i++) {
result[i] = field[i];
}
return result;
}

Not not all is lost. In Objectice C you could write:
Howerver if you want some more convenient Array functions you must use objects so the
code would look like this:

The "point" is that Objective-C really is an OO extension, it's till C below, and so you just can use all what C offers while using primitive types. If you want to gain from Objects, you explicitly have to ask for "Objects"

Regards
Friedrich
}

#include <Foundation/Foundation.h>
 
 
int main(void) {
 
  id pool = [[NSAutoreleasePool alloc] init];
 
  NSArray *arr = [NSArray arrayWithObjects: [NSNumber numberWithInt: 1],
                          [NSNumber numberWithInt: 2],
                          [NSNumber numberWithInt: 3], nil];
  NSArray *copy_of_arr = [NSArray arrayWithArray: arr];
 
  [pool release];
  return 0;
}

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Arrays of Primitives ..

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objective-c, iPhone, cocoa

Cocoa

Apple Programming

Objective-C Programming Language

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