diff options
| -rw-r--r-- | src/corelib/itemmodels/qrangemodeladapter.qdoc | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/src/corelib/itemmodels/qrangemodeladapter.qdoc b/src/corelib/itemmodels/qrangemodeladapter.qdoc index 5ab128a8c5f..263bff0dd0c 100644 --- a/src/corelib/itemmodels/qrangemodeladapter.qdoc +++ b/src/corelib/itemmodels/qrangemodeladapter.qdoc @@ -118,11 +118,9 @@ would bypass the QAbstractItemModel notification protocol, those reference objects prevent direct modifications of the items. - \note Calling mutable overloads generates some overhead. Make a const copy - of the adapter (which will not copy the data), or use \c{std::as_const} to - make sure that only the const overloads are used in performance critical, - read-heavy code. This is the same technique as when accessing elements in - an implicitly shared Qt container. + \note Accessing the reference object always makes a call to the model to get + a copy of the value. This can be expensive; for performance critical access + to data, store a copy. \section3 Item access |