字符串的拼接
NSString *string1 = @"iphone";
string1 = [string1 stringByAppendingString:@"123"];
NSLog(@"%@",string1);
字符串替换
string1 =[string1 stringByReplacingOccurrencesOfString:@"ip" withString:@"pi"];
NSLog(@"%@",string1);
字符串比较
NSComparisonResult result = [string1 compare:@"asdffggg"]
if (result == NSOrderedAscending) {
NSLog(@"nihao");
}
时间: 2024-11-05 14:38:26