有没有更简单的方法将文本附加到NSString？

Question

我正在尝试撰写动态网址，除了这样做之外，还有更简单的方法来追加字符串吗？这似乎效率低下。

NSString *folder1 = @"sonic";
NSString *folder2 = @"usr";
NSString *url = @"http://www.mydomain.com";

url = [url stringByAppendingFormat:@"/"];
url = [url stringByAppendingFormat:folder2];
url = [url stringByAppendingFormat:@"/"];
url = [url stringByAppendingFormat:folder1];

Answer 1

可能：

NSString *url = [NSString stringWithFormat:@"http://www.mydomain.com/%@/%@", folder2, folder1];