NSString的两个操作
1.去掉首尾空格和换行符
[str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet] ]
2.只去掉首尾空格:
[str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet] ]
1.去掉首尾空格和换行符
[str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet] ]
2.只去掉首尾空格:
[str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet] ]