bruns added a comment.
The first question is - why should we use pointers at all (raw, std::unique_ptr, QScopedPointer, ...) for objects **with local only scope**. The typical answer is Inheritance, see e.g. http://doc.qt.io/qt-5/qscopedpointer.html#details A `Base` pointer can be used to hold an instance of `Base`, `DerivedA` or `DerivedB`. If the exact **type is known and the object has local scope**, I don't know **any** reason to allocate the object on the heap. Allocating on the heap is just pointless overhead. Even when the **scope is not local**, but the type is known, it is often useful to allocate the object on the stack and extend its scope using the constructor. This applies to any d-pointer classes, where the copy constructur is hardly more expensive than a move constructor (all of Qts implicitly shared classes), or where we have a move constructor in the first place. REPOSITORY R286 KFileMetaData BRANCH plugin-simple (branched from master) REVISION DETAIL https://phabricator.kde.org/D12145 To: michaelh, #baloo, #frameworks, mgallien, bruns Cc: alexeymin, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns
