objective-c - stringByAppendingFormat 不起作用

Question

我有一个 NSString 并且无法应用以下语句:

NSString *myString = @"some text";
[myString stringByAppendingFormat:@"some text = %d", 3];

没有日志或错误，只是字符串没有改变。我已经尝试使用 NSString(如文档所述)和 NSMutableString。

欢迎提供任何线索。

Answer 1

我建议更正为 ( documentation ):

NSString *myString = @"some text";
myString = [myString stringByAppendingFormat:@" = %d", 3];

来自文档:

Returns a string made by appending to the receiver a string constructed from a given format string and the following arguments.