Question

I need to compare a key object from a div to a string. I access the key object in a for loop:

for (id key in _photosDic) {
    ...
}

In the loop, I want to compare the key with a string. Do I have to convert the key to a string?

Answer 1

id type can be anything so the first step would be to check if it is actually a NSString or not.

for that you can use this:

if ([idObject isKindOfClass:[NSString class]]) 
{
    //Now do a simple casting
    NSString *myString = (NSString *)idObject;

    //Now compare the strings
    NSComparisonResult result = [myOtherString compare:myString];
}