diff options
Diffstat (limited to 'src/concurrent/qtconcurrentfilter.cpp')
| -rw-r--r-- | src/concurrent/qtconcurrentfilter.cpp | 28 |
1 files changed, 8 insertions, 20 deletions
diff --git a/src/concurrent/qtconcurrentfilter.cpp b/src/concurrent/qtconcurrentfilter.cpp index 22a1243c18..ab0227983d 100644 --- a/src/concurrent/qtconcurrentfilter.cpp +++ b/src/concurrent/qtconcurrentfilter.cpp @@ -40,15 +40,10 @@ ****************************************************************************/ /*! - \headerfile <QtConcurrentFilter> + \page qtconcurrentfilter.html \title Concurrent Filter and Filter-Reduce \ingroup thread - \brief The <QtConcurrentFilter> header provides concurrent Filter and - Filter-Reduce. - - These functions are a part of the \l {Qt Concurrent} framework. - The QtConcurrent::filter(), QtConcurrent::filtered() and QtConcurrent::filteredReduced() functions filter items in a sequence such as a QList or a QVector in parallel. QtConcurrent::filter() modifies a @@ -56,6 +51,8 @@ containing the filtered content, and QtConcurrent::filteredReduced() returns a single result. + These functions are a part of the \l {Qt Concurrent} framework. + Each of the above functions have a blocking variant that returns the final result instead of a QFuture. You use them in the same way as the asynchronous variants. @@ -155,15 +152,11 @@ \section2 Using Bound Function Arguments - Note that Qt does not provide support for bound functions. This is - provided by 3rd party libraries like - \l{http://www.boost.org/libs/bind/bind.html}{Boost} or - \l{http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf} - {C++ TR1 Library Extensions}. - If you want to use a filter function takes more than one argument, you can - use boost::bind() or std::tr1::bind() to transform it onto a function that - takes one argument. + use std::bind() to transform it onto a function that takes one argument. If + C++11 support is not available, \l{http://www.boost.org/libs/bind/bind.html} + {boost::bind()} or \l{http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf} + {std::tr1::bind()} are suitable replacements. As an example, we use QString::contains(): @@ -177,7 +170,7 @@ \snippet code/src_concurrent_qtconcurrentfilter.cpp 10 - The return value from boost::bind() is a function object (functor) with + The return value from std::bind() is a function object (functor) with the following signature: \snippet code/src_concurrent_qtconcurrentfilter.cpp 11 @@ -190,7 +183,6 @@ /*! \fn QFuture<void> QtConcurrent::filter(Sequence &sequence, FilterFunction filterFunction) - \relates <QtConcurrentFilter> Calls \a filterFunction once for each item in \a sequence. If \a filterFunction returns \c true, the item is kept in \a sequence; @@ -199,7 +191,6 @@ /*! \fn QFuture<T> QtConcurrent::filtered(const Sequence &sequence, FilterFunction filterFunction) - \relates <QtConcurrentFilter> Calls \a filterFunction once for each item in \a sequence and returns a new Sequence of kept items. If \a filterFunction returns \c true, a copy of @@ -209,7 +200,6 @@ /*! \fn QFuture<T> QtConcurrent::filtered(ConstIterator begin, ConstIterator end, FilterFunction filterFunction) - \relates <QtConcurrentFilter> Calls \a filterFunction once for each item from \a begin to \a end and returns a new Sequence of kept items. If \a filterFunction returns \c true, a @@ -219,7 +209,6 @@ /*! \fn QFuture<T> QtConcurrent::filteredReduced(const Sequence &sequence, FilterFunction filterFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions) - \relates <QtConcurrentFilter> Calls \a filterFunction once for each item in \a sequence. If \a filterFunction returns \c true for an item, that item is then passed to @@ -236,7 +225,6 @@ /*! \fn QFuture<T> QtConcurrent::filteredReduced(ConstIterator begin, ConstIterator end, FilterFunction filterFunction, ReduceFunction reduceFunction, QtConcurrent::ReduceOptions reduceOptions) - \relates <QtConcurrentFilter> Calls \a filterFunction once for each item from \a begin to \a end. If \a filterFunction returns \c true for an item, that item is then passed to |