Swift初始化语法糖库Then

Posted 2021-04-28 swift语言

Swift初始化语法糖库Then，使初始化代码更简洁。 

使用Then初始化UILabel并设置其属性： 

1	let label = UILabel().then {

2	$0.textAlignment = .center

3	$0.textColor = .black

4	$0.text = "Hello, World!"

5

}

这相当于： 

1	let label: UILabel = {

2	let label = UILabel()

3	label.textAlignment = .center

4	label.textColor = .black

5	label.text = "Hello, World!"

6	return label

7

}()

开源代码主页     ❤

文章来自：51swift