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* Long live qHashMulti(Commutative)Giuseppe D'Angelo2020-05-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a helper function so that we have a shortcut. Instead of writing: QHashCombine hash; seed = hash(seed, fieldA); seed = hash(seed, fieldB); // etc. return seed; one can now simply write: return qHashMulti(seed, fieldA, fieldB, fieldC); Port a few usages inside qtbase as a demonstration. [ChangeLog][QtCore][QHash] Added the qHashMulti and qHashMultiCommutative functions as convenience helpers to calculate a hash from multiple variables (typically, data members of a class). Change-Id: I881a9ad41168df20ceecc6588a94abe7ddc6a532 Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
* Change qHash() to work with size_t instead of uintLars Knoll2020-04-091-8/+8
| | | | | | | | | | | This is required, so that QHash and QSet can hold more than 2^32 items on 64 bit platforms. The actual hashing functions for strings are still 32bit, this will be changed in a follow-up commit. Change-Id: I4372125252486075ff3a0b45ecfa818359fe103b Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
* Merge remote-tracking branch 'origin/5.14' into 5.15Qt Forward Merge Bot2020-02-041-2/+2
|\ | | | | | | | | | | | | | | | | | | Conflicts: .qmake.conf examples/widgets/widgets/imageviewer/imageviewer.cpp src/corelib/text/qchar.cpp src/corelib/time/qdatetime.cpp Change-Id: I9762f5c4ff650799219729d6aee79ac07ce9024a
| * Change examples and snippets to pass QDate and QTime by valueEdward Welbourne2020-01-301-2/+2
| | | | | | | | | | | | | | They're value types, so we should show them being used as such. Change-Id: If9f0c366fac66306b7861f04e2f047540d444acc Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>
* | Qt 6: Deprecate QHash::insertMultiLars Knoll2019-12-121-16/+0
|/ | | | | | | | | [ChangeLog][QtCore][QHash] insertMulti(), unite() and values(const Key &key) are now deprecated. Please use QMultiHash instead. Change-Id: Ic14907fd5fd38d585708e2dcf2c0200d221ebb25 Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
* Prefix textstream operators with Qt::Lars Knoll2019-05-021-14/+14
| | | | | | | As the non prefixed variants are deprecated Change-Id: I2ba09d71b9cea5203b54297a3f2332e6d44fedcf Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
* Doc: Move literal code block to a separate fileCristian Maureira-Fredes2018-10-151-0/+20
| | | | | | | | | | | We need to override this snippet for the documentation we generate for Qt for Python, and it is easier to have it on a separate file. Task-number: PYSIDE-801 Task-number: PYSIDE-691 Change-Id: Ideb5b6af25024279f167137d3b65660bb9c96a7e Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
* Unify license header usage.Jani Heikkinen2016-03-291-3/+13
| | | | | | | | | Update files using old header.LGPL3 to header.LGPL Update files using old FDL template to use new one Update files using old BSD template to use new one Change-Id: I36a78272516f9953d02956522f285b40adfc8915 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
* Examples/Doc snippets: Fix single-character string literals.Friedemann Kleint2015-10-131-3/+3
| | | | | | | Use character literals where applicable. Change-Id: I79fa5018f05735201ae35ee94ba0d356fcad1056 Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
* Introduce QHash key iteratorsSérgio Martins2015-07-281-0/+19
| | | | | | | | | | | So we can have interoperability with algorithms. Motivated by inefficient code like qDeleteAll(hash.keys()) [ChangeLog][QtCore][QHash] Added key iterators, accessible through keyBegin() and keyEnd(). Change-Id: I1f9db8a7a4294e1556cbb50b8fe5ebdcf0dc29a2 Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
* Updated BSD licensed file headersJani Heikkinen2015-02-151-3/+3
| | | | | Change-Id: I6441ff931dbd33b698d762e6f6784898f3f60fe7 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
* Update copyright headersJani Heikkinen2015-02-111-5/+5
| | | | | | | | | | | | | | | | | | Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Outdated header.LGPL removed (use header.LGPL21 instead) Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing combination. New header.LGPL-COMM taken in the use file which were using old header.LGPL3 (src/plugins/platforms/android/extract.cpp) Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license combination Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
* Add qHashRange and qHashRangeCommutativeMarc Mutz2015-01-091-0/+14
| | | | | | | | | | | | | | | | | | | qHashRange() takes an (input iterator) range and hashes each element, combining the hash values using the hash combiner from Boost/N1837 with the magic number 0x9e3779b9, as described here: http://stackoverflow.com/questions/4948780/magic-number-in-boosthash-combine qHashRangeCommutative() does the same but with a cummutative combiner (unsigned addition) to create hash values that are order-independent, e.g. for hashed containers. The obvious combiner, XOR, is a bad one because it eliminates duplicate elements. Signed addition cannot be used, since signed overflow leads to undefined behavior. [ChangeLog][QtCore] Added qHashRange() and qHashRangeCommutative() functions to aid implementing qHash() overloads for custom types. Change-Id: I3c2bbc9ce4bd0455262a70e0cf248486525e534f Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Add qHashBits(), a hash function for a memory blockMarc Mutz2014-02-281-0/+10
| | | | | | | | | | | The function arguments have been chosen to avoid caller-side casting of argument types, when passing object addresses and type sizeof()s. [ChangeLog][QtCore] Added qHashBits() to aid implementing qHash() overloads for custom types. Change-Id: I983a8560769bb27e489f23ebb6db51850ddd65f2 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Update copyright year in Digia's license headersSergio Ahumada2013-01-181-1/+1
| | | | | Change-Id: Ic804938fc352291d011800d21e549c10acac66fb Reviewed-by: Lars Knoll <lars.knoll@digia.com>
* Change copyrights from Nokia to DigiaIikka Eklund2012-09-221-6/+6
| | | | | | | | Change copyrights and license headers from Nokia to Digia Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e Reviewed-by: Lars Knoll <lars.knoll@digia.com> Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
* Doc: Prepare for building modular QtCore docs.Casper van Donderen2012-04-191-0/+299
This change fixes most qdoc errors in QtCore. There are about 900 left. The main thing this change does is moving documentation from qtcore from /doc/src to /src/corelib/doc. Other issues resolved are mis-use of qdoc commands. Change-Id: I002d01edfb13575e8bf27ce91596a577a92562d1 Reviewed-by: Lars Knoll <lars.knoll@nokia.com> Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com> Reviewed-by: Jerome Pasion <jerome.pasion@nokia.com>
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