NSAssert undeclared first use why?

Question

i used the code below in the levelManager.m to read values from a plist but when I am making an Archive to upload to itunes (AppStore) I get an error. why ?

the code :

- (float)floatForProp:(NSString *)prop {
NSNumber * retval = (NSNumber *) [_curStage objectForKey:prop];
NSAssert (retval != nil, @"Couldn't find prop %@", prop);
return retval.floatValue;
}

the error:

NSAssert undeclared first use

Note I notice that xcode is thinking that I am giving NSAssert 3 parameters instead of 2

score 2 · Accepted Answer · edited May 23 '17 at 12:11

You could use one of the NSAssert variants, in your case NSAssert1:

#define NSAssert1(condition, desc, arg1)

So:

#import <Foundation/Foundation.h>

- (float)floatForProp:(NSString *)prop
{
  NSNumber * retval = (NSNumber *) [_curStage objectForKey:prop];
  NSAssert1 (retval != nil, @"Couldn't find prop %@", prop);
  return retval.floatValue;
}

Related post of interest and Apple's Assertions and Logging Programming Guide.

score 1 · Answer 2 · answered Jul 29 '11 at 08:15

1

Replace it with

NSAssert (retval != nil, ([NSString stringWithFormat:@"Couldn't find prop %@", prop]));

answered Jul 29 '11 at 08:15

Andrea Bergia

5,502
1
23
38

score 0 · Answer 3 · answered Jul 29 '11 at 07:55

0

If you think its thinking you are giving three parameters, use this:

NSAssert (retval != nil, [NSString stringWithFormat:@"Couldn't find prop %@", prop]);

answered Jul 29 '11 at 07:55

Bushra Shahid

3,579
1
27
37

NSAssert undeclared first use why?

3 Answers3