> Il 14/04/25 17:35, Volker Hilsheimer via Interest ha scritto: > > As Thiago says, you have to use std::views::transform.
Sorry, that was a typo. Corrected example using asKeyValueRange: https://godbolt.org/z/fT4G9TnKW > In that case, you can put the QMap itself directly into the pipeline: > > > > auto viewAsPair = map | std::views::transform(fTransform); > > Passing the map directly only gives me the values, not the keys, see https://godbolt.org/z/jEahnWMT3 > But you cannot use an rvalue as the input range (see > e.g.https://en.cppreference.com/w/cpp/ranges/dangling). Make a copy first: > > auto keyValueRange = map.asKeyValueRange(); > auto viewAsPair = keyValueRange | std::views::transform(fTransform);> > > > auto keyValueRange = map.asKeyValueRange(); > > auto viewAsPair = keyValueRange | > > std::views::transform(fTransform); > > This is a bug. The type returned asKeyValueRange() is supposed to model > ranges::view. It doesn't; it doesn't inherit from view_interface nor has > enabled_view enabled for it, and it doesn't model std::moveable. This should > be a subtask of QTBUG-105465. I tend to agree. Kind regards Robert ________________________________ This message and any attachments are solely for the use of the intended recipients. They may contain privileged and/or confidential information or other information protected from disclosure. If you are not an intended recipient, you are hereby notified that you received this email in error and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. ANDRITZ HYDRO GmbH Rechtsform/ Legal form: Gesellschaft mit beschränkter Haftung / Corporation Firmensitz/ Registered seat: Wien Firmenbuchgericht/ Court of registry: Handelsgericht Wien Firmenbuchnummer/ Company registration: FN 61833 g DVR: 0605077 UID-Nr.: ATU14756806 Thank You ________________________________ _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
