error: TempGround.playground:3:9: error: @escaping attribute may only be used in function parameter position var b: @escaping () -> Void = a ~^~~~~~~~~error: TempGround.playground:3:9: error: @escaping attribute may only be used in function parameter position var b: @escaping () -> Void = a ~^~~~~~~~~func f(a: @escaping () -> Void) {} var a: () -> Void = {} f(a: a)