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Clarify QFuture::isValid() docs

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It was not clear that the function will return true even when the
result is not yet ready, so mention it explicitly.

Amends 44ceb56455c82df3e6b1c9a2fa373cac14a039f8.

Fixes: QTBUG-136530
Pick-to: 6.9 6.8 6.5
Change-Id: I03b79f2b28c4bb755e6f56147cc7af1413ed4e57
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
This commit is contained in:
Ivan Solovev 2025-05-06 14:05:57 +02:00
parent 8391685185
commit a7d8d3ecdd
1 changed files with 8 additions and 2 deletions
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src/corelib/thread/qfuture.qdoc
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@ -519,9 +519,15 @@
\since 6.0
Returns \c true if a result or results can be accessed or taken from this
QFuture object. Returns false after the result was taken from the future.
QFuture object. Returns \c false after the result was taken from the future.
\sa takeResult(), result(), results(), resultAt()
\note The return value of this function only implies whether the future
result can be consumed, not if it is ready. This function will return
\c true when the related QPromise is started, but the result is not yet
ready. To test readiness, call \l isResultReadyAt() or \l isFinished().
\sa takeResult(), result(), results(), resultAt(), isFinished(),
isResultReadyAt()
*/
/*! \fn template<typename T> template<class U = T, typename = QtPrivate::EnableForNonVoid<U>> QFuture<T>::const_iterator QFuture<T>::begin() const