Checking for empty NSSet?

Question

Is there a way to check if a set is empty? ``` NSMutableSet *setEmpty = [[NSMutableSet alloc] init]; // Code to do things... // Check for empty set? [setEmpty release]; ``` gary

Accepted Answer

You can use [setEmpty count] to see how many elements are in the set... so:

```
if ([setEmpty count] == 0) {
```

or

```
if (![setEmpty count]) {
```

etc...

I didn't see an explicit 'isEmpty' method on http://developer.apple.com/mac/library/documentation/cocoa/Reference/Foundation/Classes/NSSet_Class/Reference/Reference.html but if it exists, go for that instead of checking the count.

Checking for empty NSSet?

Solution

Problem