Question

我将我的项目转换为ARC和X密码,认为这里有传闻,任何人都看不出有任何错误。我没有写这部法典,因此我不熟悉C电话。

- (NSString*) URLEscaped
{

    NSString *encodedString = (NSString *)CFURLCreateStringByAddingPercentEscapes(
                                NULL,
                                (CFStringRef)self,
                                NULL,
                                (CFStringRef)@"!* ();:@&=+$,/?%#[]",
                                kCFStringEncodingUTF8);

    return encodedString;

}

Answer 1

From the docs:

There are many ways in which you can get a reference to an object using Core Foundation. In line with the Core Foundation ownership policy, you need to know whether or not you own an object returned by a function so that you know what action to take with respect to memory management. Core Foundation has established a naming convention for its functions that allows you to determine whether or not you own an object returned by a function. In brief, if a function name contains the word "Create" or "Copy", you own the object. If a function name contains the word "Get", you do not own the object.

是的,你重新贴出CFString。

Answer 2

在阿农发中心之下,你可以利用“桥梁”向阿农发中心转移遗体的记忆管理:

NSString *encodedString = (__bridge_transfer NSString *)CFURLCreateStringByAddingPercentEscapes(
                            NULL,
                            (CFStringRef)self,
                            NULL,
                            (CFStringRef)@"!* ();:@&=+$,/?%#[]",
                            kCFStringEncodingUTF8);

友情链接