Swift Guard-Let Statement snippet

Question

Why autocomplete for guardlet snippet doesn't work in closures? For example:

DispatchQueue.main.async(execute: {
    guardlet //no any suggestions by Xcode
})

Shouldn't I use this control statement in any closure? Or it's just wrong scopes in the snippet?

I'm using Xcode 8.2 (8C38).

Answer 1

DispatchQueue.main.async(execute: {
 guard let x = x where x > 0 else {
   // Value requirements not met, do something
 }
})

N.B:- Hi,there are no such key available "guardlet" in xcode please write that code"guard let"

Answer 2

It works in Xcode 8.2.1:

Make sure you do not have pending compilation errors in your project. You can close Xcode and reopen it eventually.