Re: float[4][3] into NSValue

FROM : Allen Smith
DATE : Tue Nov 20 20:57:56 2007

On Nov 20, 2007, at 11:37 AM, Paul Sargent wrote:

>
> On 20 Nov 2007, at 19:16, Lorenzo wrote:
>

>> Can I store a float[4][3] into an NSValue object?
>> Or can I store my own struct in an NSValue?
>> If yes, how to do that?
>> And how to get back the float[4][3] from the NSValue?

>
> No, NSValues are for single values, not arrays of them.


Why do you say that? NSValue can store arbitrary structures, as long 
as they are of fixed length.

float test[4][3]    = {{1.0, 2.0, 3.0}};
float result[4][3]    = {0.0};

NSValue *value = [NSValue value:test withObjCType:@encode(float[4][3])];

[value getValue:result];

NSLog(@"%f %f %f", result[0][0], result[0][1], result[0][3]);


>>

2007-11-20 11:54:03.553 test[18824] 1.000000 2.000000 0.000000


Allen