课程来自慕课网liuyubobobo老师
来自Swift2.2的更新
- 弃用++和--
a += 1
- 弃用C风格的for循环
- 倒序
for i in (1..<10).reversed(){ }
- 步长不为1
for i in stride(from:0, to:10, by:2){ // to 为开区间 through 为闭区间 by为步长 }
- 元组的变化:元组可以进行比较
let score1 = (chinese:90,math:90) let score2 = (chinese:90,math:95) score1 < score2 // true
- (#selector:)更方便编译器查错
网友评论