qtpromise/docs/qtpromise/qpromise/reject.md
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2018-02-11 19:02:14 +01:00

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[static] QPromise<T>::reject

[static] QPromise<T>::reject(any reason) -> QPromise<T>

Creates a QPromise<T> that is rejected with the given reason of whatever type:

QPromise<int> compute(const QString& type)
{
    if (type == "foobar") {
        return QPromise<int>::reject(QString("Unknown type: %1").arg(type));
    }

    return QPromise<int>([](const QPromiseResolve<int>& resolve) {
        // {...}
    });
}