Swift Block value error

Question

I keep getting a finish block error in swift. The error is:

Cannot call value of non-function type'((Array,Array)->())!

There's an image of the error below as well. Here's the code:

var blockFinih: ((_ selectedTags: Array<Tag>, _ unSelectedTags: Array<Tag>) -> ())!

func finishTagController() {
    var selected: Array<Tag> = Array()
    var unSelected: Array<Tag> = Array()

    for currentTag in tags {
        if currentTag.isSelected {
            selected.append(currentTag)
        }
        else {
            unSelected.append(currentTag)
        }
    }
    self.dismiss(animated: true, completion: { () -> Void in
        self.blockFinih(selectedTags: selected, unSelectedTags: unSelected)
    })
}

Answer 1

Don't specify the argument labels when you call blockFinih. You've defined it to have no argument labels. The parameters selectedTags and unSelectedTags can only be used inside the function, not by the caller.

Change:

self.blockFinih(selectedTags: selected, unSelectedTags: unSelected)

to:

self.blockFinih(selected, unSelected)