Swift escaping block declaration

Question

I have the following code:

typealias queryCompletionBlock = (_ finished:Bool) -> Void

func queryForParams(@escaping completion:queryCompletionBlock)

But I get an error

Attribute can only be applied to types, not declarations

The problem is the function requires block to be escaping. How do I declare the above function with an escaping block?

Answer 1

func queryForParams(completion: @escaping queryCompletionBlock)

Answer 2

try func queryForParams(completion: @escaping queryCompletionBlock)