Question

所以我有以下结构，如果可能的话，我很好奇。

class Chip8
{

    let foo = 10;

    let mapping = [

        // CLS (clear the display)
        0x00E0: { (argument: Int) -> Void in
             // How can I reach self.foo here (self.foo obviously does not work, which is the premise of the question)
         },

    ]
}

这样的事情可能吗？

编辑：

似乎如果我将映射的初始化移动到构造函数，我可以访问＆＃34; self＆＃34;

Answer 1

您也可以尝试

class Chip8
{

    let foo = 10;

    lazy var mapping:[Int: (Int)->Void] = {
        return [

            // CLS (clear the display)
            0x00E0: { (argument: Int) -> Void in
                // How can I reach self.foo here (self.foo obviously does not work, which is the premise of the question)
                self.foo
            },

        ]
    }()
}

Answer 2

我已将映射的初始化移动到init构造函数，现在我可以访问＆＃34; self＆＃34;来自映射中的闭包。

达到＆＃34;自我＆＃34;在课堂上定义的闭包中

2 个答案: