Rubs Rubs - 1 month ago 7
Objective-C Question

objective-c runtime error "Use of undeclared identifier 'objc_property_t'"

I'm trying to get the properties from my class using obj-c runtime approach I found on the answers from here, however I'm getting a lot of warnings/error when coding, do I need to import the library or make something in order to have the obj-c runtime functions available?

objc_property_t *properties = class_copyPropertyList([self class], &outCount);

Warning: "Implicit declaration of function 'class_copyPropertyList' is invalid in C99
Error: Use of undeclared identifier 'objc_property_t'

This is the whole chunk that I've copied:

unsigned int outCount, i;
objc_property_t *properties = class_copyPropertyList([self class], &outCount);
for (i = 0; i < outCount; i++) {
objc_property_t property = properties[i];
NSString *propertyName = [[NSString alloc] initWithCString:property_getName(property)];
id propertyValue = [self valueForKey:(NSString *)propertyName];
if (propertyValue) [props setObject:propertyValue forKey:propertyName];
}
free(properties);


Thanks in advance!.

Answer

You have to import the runtime

#import <objc/runtime.h>