///带有关联值的枚举
enum TestEnum {
    case t1(Int, Int, Int)
    case t2(Int, Int)
    case t3(Int)
    case t4(Bool)
}
print(MemoryLayout<TestEnum>.alignment)//Int类型内存对齐：8
print(MemoryLayout<TestEnum>.size)//实际大小:24 + 1
print(MemoryLayout<TestEnum>.stride)//系统分配：24 + 8


///带有关联值的枚举
enum Password {
    case num(Int, Int)
    case str
}
print(MemoryLayout<Password>.alignment)//Int类型内存对齐：8
print(MemoryLayout<Password>.size)//实际大小:16 + 1
print(MemoryLayout<Password>.stride)//系统分配：16 + 8

///结构体
struct Point {
    let x: Int
    let y: Int
    var isHit: Bool
}


print(MemoryLayout<Point>.alignment)//Int类型内存对齐：8
print(MemoryLayout<Point>.size)//实际大小:16 + 1
print(MemoryLayout<Point>.stride)//系统分配：16 + 8

///分析Class1
var name = "Jack"
print(Mems.size(ofVal: &name)) // 16对齐
class Man {
    // metadata 8 类型信息
    // RefCounts 8 引用计数
    var name = "j" // 16 字符串变量对齐
}
// 变量 size 接收类Size
var man = Man()
print(class_getInstanceSize(type(of: man))) // 32
print(class_getInstanceSize(Man.self)) // 32
print(Mems.size(ofRef: man)) // 示例对象实际分配：32


//分析Class2
var isMan = true
print(Mems.size(ofVal: &isMan)) // 1
class Man2 {
    // metadata 8 类型信息
    // RefCounts 8 引用计数
    var isMan = true // 1 对齐
}
// 变量 size 接收类Size
var man2 = Man2()
print(class_getInstanceSize(type(of: man2))) //Class 16 + 8内存对齐
print(class_getInstanceSize(Man2.self)) //Class 16 + 8内存对齐
print(Mems.size(ofRef: man2)) // 实例对象：16 + 16 内存对齐

protocol DragonFire {}
extension DragonFire {
    func fire() {

    }
}

struct YellowDragon: DragonFire {
    let year = "8"
    let teeth = 48
}

print(MemoryLayout<YellowDragon>.size) // 24
print(MemoryLayout<DragonFire>.size) // 40