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Groups > comp.lang.c++ > #67973
| From | usenet@stegropa.de (Stefan Große Pawig) |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: Weird use of maps. |
| Date | 2019-08-28 20:22 +0200 |
| Organization | Dark Sky |
| Message-ID | <87ftllb15b.fsf@ID-208667.user.individual.de> (permalink) |
| References | <qk5vm0$52n$1@dont-email.me> |
James Kuyper <jameskuyper@alumni.caltech.edu> writes: > [...] > The only explanation I could find for this peculiar design was a short > comment: "I'd prefer using QMap<int,QString>, which would be faster - > but then it wouldn't be a QVariantMap". The string "QVariantMap" occurs > nowhere else anywhere in the relevant code base, and there's nothing > about it at <https://doc.qt.io/>. I have no idea what he was thinking > about when he wrote that comment. Any suggestions? QVariant has a large set of toXXX() methods to get at the contained type, including possible conversions. Among these is toMap(), which returns a QMap<QString, QVariant>. Is that map of yours stored in another QVariant? If so (now or sometime back in the past), that could explain the requirement to use a QMap<QString, QVariant>. -Stefan
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Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-28 09:30 -0400
Re: Weird use of maps. Jens Kallup <jkallup@web.de> - 2019-08-28 16:22 +0200
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-28 20:46 -0400
Re: Weird use of maps. Öö Tiib <ootiib@hot.ee> - 2019-08-28 09:00 -0700
Re: Weird use of maps. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-08-28 14:54 -0700
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-28 20:58 -0400
Re: Weird use of maps. David Brown <david.brown@hesbynett.no> - 2019-08-29 10:24 +0200
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-29 10:05 -0400
Re: Weird use of maps. Mike Terry <news.dead.person.stones@darjeeling.plus.com> - 2019-08-28 19:19 +0100
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-28 21:05 -0400
Re: Weird use of maps. usenet@stegropa.de (Stefan Große Pawig) - 2019-08-28 20:22 +0200
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-28 21:08 -0400
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-28 21:16 -0400
Re: Weird use of maps. usenet@stegropa.de (Stefan Große Pawig) - 2019-08-29 20:14 +0200
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-29 20:14 -0400
Re: Weird use of maps. David Brown <david.brown@hesbynett.no> - 2019-08-30 08:28 +0200
Re: Weird use of maps. Öö Tiib <ootiib@hot.ee> - 2019-08-30 00:15 -0700
Re: Weird use of maps. Manfred <noname@add.invalid> - 2019-09-13 17:49 +0200
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-09-13 15:04 -0400
Re: Weird use of maps. Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-28 19:33 +0000
Re: Weird use of maps. James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-28 21:11 -0400
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