--- a/src/model.cpp Wed Jun 22 16:53:35 2022 +0300 +++ b/src/model.cpp Wed Jun 22 20:10:57 2022 +0300 @@ -203,7 +203,7 @@ Q_EMIT this->dataChanged(index, index); } -std::optional<int> Model::find(ModelId id) const +std::optional<std::size_t> Model::find(ModelId id) const { return pointerToOptional(findInMap(this->positions, id)); }