'<' is not a prefix unary operator

Question

I want to make an if statement with an greater than symbol in it. When I type the code it gives me this error: ''<' is not a prefix unary operator'

This is my code:

 if messages.count == >75 {
        navigationItem.rightBarButtonItem?.isEnabled = true
    } else if messages.count == <75 {
        navigationItem.rightBarButtonItem?.isEnabled = false
    }

Hope someone can help!

Its `>`, `<`, `>=` and `<=` in Swift (as in many other programming languages). How did you come up with `== >75` ?? — Martin R, Mar 25 '17 at 09:29
In the Swift language reference: https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/BasicOperators.html#//apple_ref/doc/uid/TP40014097-CH6-ID70. — Martin R, Mar 25 '17 at 09:32

score 1 · Accepted Answer · answered Mar 25 '17 at 09:30

Leave out the ==:

 if messages.count > 75 {
     navigationItem.rightBarButtonItem?.isEnabled = true
 } else if messages.count < 75 {
     navigationItem.rightBarButtonItem?.isEnabled = false
 }

There's more than just ==, > and <:

A == B means A is equal to B
A != B means A is not equal to B
A > B means A is greater than B
A < B means A is less than B
A >= B means A is greater than or equal to B
A <= B means A is less than or equal to B

Check out the language docs here.

Thanks for noticing! I really don't know how I didn't noticed it. — top1402, Mar 25 '17 at 09:37

'<' is not a prefix unary operator

1 Answers1