Is it possible to use a wildcard in KVC?

Question

I\'m trying to use wildcard in KVC like this.

Is it possible?

Or Is there other ways to use a wildcard to indicate a member variable?

@interface          


        

Answer 1

Though I couldn't find a way to support wildcards using the syntax you were attempting. I found this roundabout method using the Objective-C runtime!

First we get all of the properties of the class you'd like to use

#import 

unsigned int outCount;
objc_property_t *properties = class_copyPropertyList([MyClass class], &outCount);
NSMutableArray *array = [NSMutableArray arrayWithCapacity:outCount];
for (int i = 0; i < outCount; i++)
{
    objc_property_t property = properties[i];
    const char *propName = property_getName(property);
    if(propName)
    {
        NSString *propertyName = [NSString stringWithUTF8String:propName];
        [array addObject:propertyName];
    }
}
free(properties);

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Then filter out the ones you actually want

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF ENDSWITH '1'"];
[array filterUsingPredicate:predicate];

---

Then actually use them

for (NSString *key in array)
    NSLog(@"%@", [testClass valueForKey:key]);