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qdebug.h includes many Qt and STL headers, so if you include a Qt header you get all those transitive includes, which may affect build time. - Where appropriate use the printf-like syntax of qDebug() and co., these don't need the QDebug streaming operators - qfloat16 is used in an inline member function, so include it explicitly [ChangeLog][Potentially Source Incompatible Changes] Various Qt public headers don't include QDebug any more; if you need QDebug's streaming you'll have to include it in your code. Task-number: QTBUG-132439 Change-Id: I750587e17a3b38fa226cd3af8eaccc8da580f436 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> (cherry picked from commit 185cba6e95a006d2548f20599f84390e5a3ad653) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
Qt 4 extends Qt's support for multithreaded applications with an API for concurrent programming which includes implementations of the well-known map-reduce and filter-reduce algorithms. Documentation for these examples can be found via the Examples link in the main Qt documentation.