CAPT_David的博客

匹配9-15个由字母/数字组成的字符串的正则表达式： NSString * regex = @"^[A-Za-z0-9]{9,15}$"; NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; BOOL isMatch = [pred evaluateWithObjec