Create Unsigned Long Long from NSString

Question

Possible Duplicate:
Storing and retrieving unsigned long long value to/from NSString

I am trying to create a unsigned long long from a string so I can use the value in elsewhere but not having much luck doing so...Here is what I am using to attempt this

-(void)unsignedLongValue{


NSString *theString = [NSString stringWithFormat:@"%llu", [NSNumber   
unsignedLongLongValue]];    

theString = [[_message objectForKey:@"user"] objectForKey:@"id"];    

NSLog(@"%llu");

}

If you have any suggestions or know of any good articles I would be very much appreciative if you could inform me! thanks!

check this thread http://stackoverflow.com/questions/1181637/storing-and-retrieving-unsigned-long-long-value-to-from-nsstring — Felipe Sabino, Jun 23 '11 at 02:41
To request support for reading unsigned values from NSString, please visit http://bugreport.apple.com and file a dupe of radar://2264733 against component `Foundation | X`. — Quinn Taylor, Jan 23 '13 at 05:49

score 5 · Accepted Answer · answered Jun 23 '11 at 02:41

5

You probably want to do this,

NSString * theString = [[[_message objectForKey:@"user"] objectForKey:@"id"];

NSNumberFormatter * numberFormatter = [[[NSNumberFormatter alloc] init] autorelease];
NSNumber * number = [numberFormatter numberFromString:theString];

NSLog(@"%llu", [number unsignedLongLongValue]);

answered Jun 23 '11 at 02:41

Deepak Danduprolu

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Thanks This is the correct way to attempt this ! I got it working with starting from this code! thanks – FreeAppl3 Jun 30 '11 at 20:11

score 2 · Answer 2 · answered Jun 23 '11 at 02:40

2

The line

NSLog(@"%llu");

does nothing. You need to tell the log what to print, not just what type it is. Use this instead:

NSLog(@"%llu",numberToPrint);

Also, you re-write theString immediately after defining it, so the initial value from

NSString *theString = [NSString stringWithFormat:@"%llu", [NSNumber unsignedLongLongValue]];

is never used.

answered Jun 23 '11 at 02:40

PengOne

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One more thing about the last part, instance method is being called on a class. – Deepak Danduprolu Jun 23 '11 at 02:45
@Deepak: Yes, his code is a wash. Hence why I voted up your re-write. You might be kind and explain why your way is so much better. – PengOne Jun 23 '11 at 02:47
These are all great responses! I appreciate the help, I am going to try a few things you suggested and will let you all know how things went! Thanks agin – FreeAppl3 Jun 23 '11 at 03:05

Create Unsigned Long Long from NSString

2 Answers2