Swift Shorthand for Functions like Flutter?

Question

I was writing out a SwiftUI Button and I was wondering if there's a way I could turn something like this ⤵

Button(action: {
  self.textField.value?.becomeFirstResponder()
})

into ⤵

Button(action: => self.textField.value?.becomeFirstResponder())

Clarification

self.textField.value?.becomeFirstResponder() is not a Void function. It is a function of type () -> Bool. But it's just used as an example in the answer below.

Answer 1

Button action is of type () -> Void:

public init(action: @escaping () -> Void, @ViewBuilder label: () -> Label)

So if your function also is of type () -> Void:

func buttonAction() {
    // ...
}

you can just do:

Button(action: buttonAction) {
    Text("Button")
}

Otherwise you need to stick what you've already tried or use another init.