I'm getting a `unichar` type returned from `NSString`'s instance method `characterAtIndex(Int)` and I want to compare it with a Swift type `String`. Is there an easy way to do this?

```
var str = "#ffffff"
var unichar = (str as NSString).characterAtIndex(0)
var unicharString = // Perform magic
var containsHash = unicharString == "#" // Should return `true`

```

Thanks