这是我迄今为止(用于测试目的)：
- let string = "The quick BroWn fOX jumpS Over tHe lazY DOg"
- for chr in string {
- if isupper(String(chr)) {
- print(String(chr).lowercaseString)
- continue
- }
- print(chr)
- }
如何测试大小写字符？
您可以随时查看小写表示与当前值的不同;
- let string = "The quick BroWn fOX jumpS Over tHe lazY DOg"
- var output = ""
- for chr in string {
- var str = String(chr)
- if str.lowercaseString != str {
- output += str
- }
- }
- print(output)
- >>> TBWOXSOHYDO
