iphone - 清除而不是释放 NSMutableString

Question

我有一个相当大的循环，它获取一个字符串，对其进行处理，然后进入下一个。我最初是发布它然后重新分配它，但认为这有点浪费资源，但不知道如何清除它以重用它。

score 22 · Accepted Answer

22

一种方法是[myString setString: @""].

于 2010-07-26T06:25:15.460 回答

score 1 · Accepted Answer

The selected solution will crash with the following error:

'Attempt to mutate immutable object with setString:'

This worked for me instead:

self.myString = [NSMutableString stringWithString:@""];

make sure you synthesize myString in your class.

2 回答 2