Doc: QtConcurrent::run. Make sure the example actually compiles

QString::split has overload,  and if you want to take the address of a
function with overload, you need to cast it. If we really wanted to use
QString::split, we would have to do

QFuture<QStringList> future = QtConcurrent::run(string, static_cast<QStringList (QString::*)(const QString &, QString::SplitBehavior, Qt::CaseSensitivity ) const>(&QString::split),  QString (", "), QString::KeepEmptyParts, Qt::CaseSensitive);

So use QByteArray::split as an example instead

Task-number: QTBUG-12897
Reviewed-by: David Boddie

1 files changed, 4 insertions, 6 deletions

diff --git a/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentrun.cpp b/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentrun.cpp
index 8f74461..cea6553 100644
--- a/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentrun.cpp
+++ b/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentrun.cpp
@@ -73,16 +73,14 @@ QFuture<QString> future = QtConcurrent::run(someFunction, bytearray);
 QString result = future.result();
 //! [3]
 
-
 //! [4]
-// call 'QStringList QString::split(const QString &sep, SplitBehavior behavior, Qt::CaseSensitivity cs) const' in a separate thread
-QString string = ...;
-QFuture<QStringList> future = QtConcurrent::run(string, &QString::split, QString(", "), QString::KeepEmptyParts, Qt::CaseSensitive);
+// call 'QList<QByteArray>  QByteArray::split(char sep) const' in a separate thread
+QByteArray bytearray = "hello world;
+QFuture<QList<QByteArray> > future = QtConcurrent::run(bytearray, &QByteArray::split), ',');
 ...
-QStringList result = future.result();
+QList<QByteArray> result = future.result();
 //! [4]
 
-
 //! [5]
 // call 'void QImage::invertPixels(InvertMode mode)' in a separate thread
 QImage image = ...;