Can't get NSMutableArray to work.
I can only get NSMutable array to add NSStrings, but when I try something like this:
NSMutableArray *array = [NSMutableArray array];
NSNumber *number = [[NSNumber alloc] initWithUnsignedInt:5];
[array addObject:number];
I get the following error:
*** -[NSCFNumber length]: unrecognized selector sent to instance 0x107f90
I've tried it with other objects as well, and NSString seems to be the only one that works. Any reason why?
Hi T
I know it's been a while, however better late than never! I didn't have any difficulty with this using XCode 3.2.1 on Snow Leopard.
#import <Cocoa/Cocoa.h>
int main(int argc, char *argv[])
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSMutableArray *array = [NSMutableArray array];
NSString* a = [[NSString alloc] initWithCString:"who"] ;
NSString* b = [[NSString alloc] initWithCString:"flung"] ;
NSNumber* n = [[NSNumber alloc] initWithUnsignedInt:2];
NSString* d = [[NSString alloc] initWithCString:"dung"] ;
[array addObject:a];
[array addObject:b];
[array addObject:n];
[array addObject:d];
for ( size_t i = 0 ; i < [array count] ; i++ ) {
NSLog(@"%d : %@",i,[array objectAtIndex:i]) ;
}
[pool drain];
return 0 ;
}
Output:
506 /Users/rmills/Projects/WeeTest2/build/Debug/WeeTest2.app/Contents/MacOS> ./WeeTest2
2010-01-15 21:24:38.171 WeeTest2[3851:903] 0 : who
2010-01-15 21:24:38.173 WeeTest2[3851:903] 1 : flung
2010-01-15 21:24:38.174 WeeTest2[3851:903] 2 : 2
2010-01-15 21:24:38.174 WeeTest2[3851:903] 3 : dung
507 /Users/rmills/Projects/WeeTest2/build/Debug/WeeTest2.app/Contents/MacOS>
