Swift 获取字符的个数 、字符串的遍历1.获取字符串中字符个数2.遍历字符串 1.获取字符串中字符个数创建赋初值的字符串var str = "你好啊"if str.count == 0 { print("空值")}2.遍历字符串for i in str{ print(i)} iOS 2023-10-29 39 点赞 0 评论 59 浏览
