Question

I’ll use an example from JavaScript to help clarify my question. Let’s assume I have the following object:

sports = {
   soccer: {...},
   basketball: {...},
   baseball: {...}
}

If at some point in my script I have a variable, sportString, that simply holds a string, I can dynamically call one of the sports objects in the following way:

sports[sportString];

This frees me from having to use a bunch of nested if statements, testing the value of the string such as:

if(sportString === 'soccer'){
    sports.soccer;
}else if(sportString === 'basketball){....

So, my question is how can I accomplish something similar to sports[sportString] in Objective-C, if sportString is an NSString object?

Answer 1

Use an NSDictionary as your sports object. Then you can do lookups like this:

[sports objectForKey: sportsString];