Il 14/04/25 17:35, Volker Hilsheimer via Interest ha scritto:
As Thiago says, you have to use std::views::transform. In that case, you can put the QMap itself directly into the pipeline:auto viewAsPair = map | std::views::transform(fTransform); 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);
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.
My 2 c, -- Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer KDAB (France) S.A.S., a KDAB Group company Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com KDAB - Trusted Software Excellence
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