前行的路一定是修行的路，停留在远离，不会有人施舍你，大家都在负重前行，除非你自己有矿，有资本。
start
1. xib
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
xib中一个CustomView中用自定义类的table-> MMTable, CustomView.m中
override func awakeFromNib() {
super.awakeFromNib()
table.backgrundColor = .white
}
MMTable.swift
override func awakeFromNib() {
super.awakeFromNib()
self.backgrundColor = .gray
}
let customView = Bundle.main.load....
customView.frame = self.frame
self.view.addSubview(customView)
customView.table.backgrundColor = ?
- UIView 加载顺序
- UIViewController加载顺序
-
Appelegate加载顺序
- 模型解析了解吗? 请说说你用过的模型解析库?有手动写过吗? 请问swift如何做模型解析呢? 下面的json解析成 user - cat - book结构
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
user
{
"nm": "mm",
"age": 16,
"cat": {
"nm": "small cat",
"color": "white"
},
"books": [
{
"nm": "book1",
"price": 10.0,
},
{
"nm": "book2",
"price": 92.0,
},
]
}
1
为何不用struct呢? 为何要使用class
- properties ```swift struct ShopItem { var eggs: Int let price: Int }
let shop = ShopItem(eggs: 10, price: 4) shop.eggs = 5
class CshopItem { var eggs: Int let price: Int init(_ e: Int, p: Int) { eggs = e price = p } } let cshop = CshopItem(10, p: 4) cshop.eggs = 5
eggs各为多少呢? 或者有其他解释呢?
1
This behavior is due to structures being value types. When an instance of a value type is marked as a constant, so are all of its properties.
The same isn’t true for classes, which are reference types. If you assign an instance of a reference type to a constant, you can still change that instance’s variable properties.
1
2
3
4
5
6
7
8
9
10
7. ??
```swift
var a: String?
let moreThan5 = a?.count ?? 0 > 5
?? 与 > 号的优先级是?
- swift 合并两个数组为元组（a，b） ```swift zip(A, B)
