Swift 如何从同一个类中的另一个方法获取变量

Question

我是 swift 的初学者。我写了代码和一个问题。我想从 func A 获取变量 b 但我不知道如何。如何获得。

/*This is extension from FirstViewController*/
extension FirstViewController{

    private func A() {
        let a:CGFloat  = view.frame.size.width
        let b:CGFloat  = view.frame.size.height
    }

    private func B() {
        self.Something.frame.size = CGSize(width: /*I want to get a in here*/, height: /*I want to get b in here*/)
    }

}

Answer 1

您可以简单地使用 (CGFloat, CGFloat) 类型的 Tuple 来实现这一点，即

private func A() -> (a: CGFloat, b: CGFloat)
{
    let a:CGFloat  = view.frame.size.width
    let b:CGFloat  = view.frame.size.height
    return (a, b)
}

private func B()
{
    self.Something.frame.size = CGSize(width: self.A().a, height: self.A().b)
}