计算 属性 和 属性 集与 swift 3 中闭包的区别?

Difference between computed property and property set with closure in swift 3?

我已经阅读了这个()有用的问题,但它没有完全回答我想知道的问题。

它回答了以下两者之间的区别:

//closure
var pushBehavior: UIPushBehavior = {
    let lazilyCreatedPush = UIPushBehavior()
    lazilyCreatedPush.setAngle(50, magnitude: 50)
    return lazilyCreatedPush
}()

//computed
var pushBehavior: UIPushBehavior {
    get{
        let lazilyCreatedPush = UIPushBehavior()
        lazilyCreatedPush.setAngle(50, magnitude: 50)
        return lazilyCreatedPush
    }
}

我明白了。现在,如果我们更改第一个,第二个示例中的计算变量与这个有什么区别:

var pushBehavior: UIPushBehavior {
    let lazilyCreatedPush = UIPushBehavior()
    lazilyCreatedPush.setAngle(50, magnitude: 50)
    return lazilyCreatedPush
}

对我来说,这与 get{} 完全一样,但没有 get 关键字。是这样吗?如果是这样,为什么我们有 get 关键字?

没有区别。

来自documentation

You can simplify the declaration of a read-only computed property by removing the get keyword and its braces.