C++ QT 删除 QNetworkCookie

Question

我正在尝试删除 cookie 但出现错误:

错误 C2440:“正在初始化”:无法从“const QNetworkCookie”转换为“QNetworkCookie &”

我很困惑为什么编译器提示 const QNetworkCookie(我假设它提示我的 foreach())。

void PersistentCookieJar::deleteCookie(const QString cookieName) {
    QList<QNetworkCookie> cookies = allCookies();
    foreach(QNetworkCookie &cookie, allCookies()) {
        if (cookie.name() == cookieName) {
            cookie.setValue(""); // delete the cookie
            break;
        }
    }
}

Answer 1

void PersistentCookieJar::deleteCookie(const QString cookieName) {
    QList<QNetworkCookie> cookies = allCookies();
    foreach(QNetworkCookie &cookie, cookies) {
        if (cookie.name() == cookieName) {
            cookie.setValue(""); // delete the cookie
            break;
        }
    }
    setAllCookies(cookies);
}