NAME¶

std::priority_queue< _Tp, _Sequence, _Compare > -

SYNOPSIS¶

Public Types¶

typedef _Sequence::const_reference const_reference typedef _Sequence container_type typedef _Sequence::reference reference typedef _Sequence::size_type size_type typedef _Sequence::value_type value_type

Public Member Functions¶

priority_queue (const _Compare &__x, const _Sequence &__s) priority_queue (const _Compare &__x=_Compare(), _Sequence &&__s=_Sequence()) template<typename _InputIterator > priority_queue (_InputIterator __first, _InputIterator __last, const _Compare &__x, const _Sequence &__s) template<typename _InputIterator > priority_queue (_InputIterator __first, _InputIterator __last, const _Compare &__x=_Compare(), _Sequence &&__s=_Sequence()) template<typename... _Args> void emplace (_Args &&...__args) bool empty () const void pop () void push (const value_type &__x) void push (value_type &&__x) size_type size () const void swap (priority_queue &__pq) const_reference top () const

Protected Attributes¶

_Sequence c _Compare comp

Detailed Description¶

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>>class std::priority_queue< _Tp, _Sequence, _Compare >¶

A standard container automatically sorting its contents. This is not a true container, but an adaptor. It holds another container, and provides a wrapper interface to that container. The wrapper is what enforces priority-based sorting and queue behavior. Very few of the standard container/sequence interface requirements are met (e.g., iterators). The second template parameter defines the type of the underlying sequence/container. It defaults to std::vector, but it can be any type that supports front(), push_back, pop_back, and random-access iterators, such as std::deque or an appropriate user-defined type. The third template parameter supplies the means of making priority comparisons. It defaults to less<value_type> but can be anything defining a strict weak ordering. Members not found in normal containers are container_type, which is a typedef for the second Sequence parameter, and push, pop, and top, which are standard queue operations. Note: Definition at line 359 of file stl_queue.h.

Constructor & Destructor Documentation¶

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> std::priority_queue< _Tp, _Sequence, _Compare >:: priority_queue (const _Compare &__x, const _Sequence &__s) [inline], [explicit]¶

Default constructor creates no elements. Definition at line 394 of file stl_queue.h. References std::make_heap().

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> template<typename _InputIterator > std::priority_queue< _Tp, _Sequence, _Compare >:: priority_queue (_InputIterator__first, _InputIterator__last, const _Compare &__x, const _Sequence &__s) [inline]¶

Builds a queue from a range. Parameters: Begins by copying s, inserting a copy of the elements from [first,last) into the copy of s, then ordering the copy according to x. For more information on function objects, see the documentation on functor base classes. Definition at line 434 of file stl_queue.h. References std::make_heap().

Member Function Documentation¶

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> bool std::priority_queue< _Tp, _Sequence, _Compare >::empty () const [inline]¶

Returns true if the queue is empty. Definition at line 460 of file stl_queue.h. Referenced by __gnu_parallel::multiseq_partition(), and __gnu_parallel::multiseq_selection().

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> void std::priority_queue< _Tp, _Sequence, _Compare >::pop () [inline]¶

Removes first element. This is a typical queue operation. It shrinks the queue by one. The time complexity of the operation depends on the underlying sequence. Note that no data is returned, and if the first element's data is needed, it should be retrieved before pop() is called. Definition at line 523 of file stl_queue.h. References std::pop_heap(). Referenced by __gnu_parallel::multiseq_partition(), and __gnu_parallel::multiseq_selection().

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> void std::priority_queue< _Tp, _Sequence, _Compare >::push (const value_type &__x) [inline]¶

Add data to the queue. Parameters: This is a typical queue operation. The time complexity of the operation depends on the underlying sequence. Definition at line 488 of file stl_queue.h. References std::push_heap(). Referenced by __gnu_parallel::multiseq_partition(), and __gnu_parallel::multiseq_selection().

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> size_type std::priority_queue< _Tp, _Sequence, _Compare >::size () const [inline]¶

Returns the number of elements in the queue. Definition at line 465 of file stl_queue.h.

template<typename _Tp, typename _Sequence = vector<_Tp>, typename _Compare = less<typename _Sequence::value_type>> const_reference std::priority_queue< _Tp, _Sequence, _Compare >::top () const [inline]¶

Returns a read-only (constant) reference to the data at the first element of the queue. Definition at line 473 of file stl_queue.h. Referenced by __gnu_parallel::multiseq_partition(), and __gnu_parallel::multiseq_selection().

Author¶

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