pzearfoss/NSNumber-RomanNumerals — comment on commit 2867496ad2e8a24e1f154d151d42449fd2caff67
File: NSNumber+RomanNumerals.m line 14
By JaredCrawford:

To ensure platform independence, this should be `[self integerValue]`
NSNumber

-(int)intValue;
-(NSInteger)integerValue;

NSInteger

#if __LP64__ || TARGET_OS_EMBEDDED || TARGET_OS_IPHONE || TARGET_OS_WIN32 || NS_BUILD_32_LIKE_64
typedef long NSInteger;
#else
typedef int NSInteger;
#endif

Great category!