diff options
Diffstat (limited to 'sources/pyside6/doc/codesnippets/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentfilter.cpp')
| -rw-r--r-- | sources/pyside6/doc/codesnippets/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentfilter.cpp | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/sources/pyside6/doc/codesnippets/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentfilter.cpp b/sources/pyside6/doc/codesnippets/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentfilter.cpp deleted file mode 100644 index a0f6778b6..000000000 --- a/sources/pyside6/doc/codesnippets/doc/src/snippets/code/src_corelib_concurrent_qtconcurrentfilter.cpp +++ /dev/null @@ -1,181 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of Qt for Python. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] -bool function(const T &t); -//! [0] - - -//! [1] -bool allLowerCase(const QString &string) -{ - return string.lowered() == string; -} - -QStringList strings = ...; -QFuture<QString> lowerCaseStrings = QtConcurrent::filtered(strings, allLowerCase); -//! [1] - - -//! [2] -QStringList strings = ...; -QFuture<void> future = QtConcurrent::filter(strings, allLowerCase); -//! [2] - - -//! [3] -V function(T &result, const U &intermediate) -//! [3] - - -//! [4] -void addToDictionary(QSet<QString> &dictionary, const QString &string) -{ - dictionary.insert(string); -} - -QStringList strings = ...; -QFuture<QSet<QString> > dictionary = QtConcurrent::filteredReduced(strings, allLowerCase, addToDictionary); -//! [4] - - -//! [5] -QStringList strings = ...; -QFuture<QString> lowerCaseStrings = QtConcurrent::filtered(strings.constBegin(), strings.constEnd(), allLowerCase); - -// filter in-place only works on non-const iterators -QFuture<void> future = QtConcurrent::filter(strings.begin(), strings.end(), allLowerCase); - -QFuture<QSet<QString> > dictionary = QtConcurrent::filteredReduced(strings.constBegin(), strings.constEnd(), allLowerCase, addToDictionary); -//! [5] - - -//! [6] -QStringList strings = ...; - -// each call blocks until the entire operation is finished -QStringList lowerCaseStrings = QtConcurrent::blockingFiltered(strings, allLowerCase); - - -QtConcurrent::blockingFilter(strings, allLowerCase); - -QSet<QString> dictionary = QtConcurrent::blockingFilteredReduced(strings, allLowerCase, addToDictionary); -//! [6] - - -//! [7] -// keep only images with an alpha channel -QList<QImage> images = ...; -QFuture<void> alphaImages = QtConcurrent::filter(strings, &QImage::hasAlphaChannel); - -// keep only gray scale images -QList<QImage> images = ...; -QFuture<QImage> grayscaleImages = QtConcurrent::filtered(images, &QImage::isGrayscale); - -// create a set of all printable characters -QList<QChar> characters = ...; -QFuture<QSet<QChar> > set = QtConcurrent::filteredReduced(characters, &QChar::isPrint, &QSet<QChar>::insert); -//! [7] - - -//! [8] -// can mix normal functions and member functions with QtConcurrent::filteredReduced() - -// create a dictionary of all lower cased strings -extern bool allLowerCase(const QString &string); -QStringList strings = ...; -QFuture<QSet<int> > averageWordLength = QtConcurrent::filteredReduced(strings, allLowerCase, QSet<QString>::insert); - -// create a collage of all gray scale images -extern void addToCollage(QImage &collage, const QImage &grayscaleImage); -QList<QImage> images = ...; -QFuture<QImage> collage = QtConcurrent::filteredReduced(images, &QImage::isGrayscale, addToCollage); -//! [8] - - -//! [9] -bool QString::contains(const QRegExp ®exp) const; -//! [9] - - -//! [10] -boost::bind(&QString::contains, QRegExp("^\\S+$")); // matches strings without whitespace -//! [10] - - -//! [11] -bool contains(const QString &string) -//! [11] - - -//! [12] -QStringList strings = ...; -boost::bind(static_cast<bool(QString::*)(const QRegExp&)>( &QString::contains ), QRegExp("..." )); -//! [12] - -//! [13] -struct StartsWith -{ - StartsWith(const QString &string) - : m_string(string) { } - - typedef bool result_type; - - bool operator()(const QString &testString) - { - return testString.startsWith(m_string); - } - - QString m_string; -}; - -QList<QString> strings = ...; -QFuture<QString> fooString = QtConcurrent::filtered(images, StartsWith(QLatin1String("Foo"))); -//! [13] |