entry_cmp.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2021 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
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// a copy of the GCC Runtime Library Exception along with this program;
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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/**
* @file binary_heap_/entry_cmp.hpp
* Contains an implementation class for a binary_heap.
*/
#ifndef PB_DS_BINARY_HEAP_ENTRY_CMP_HPP
#define PB_DS_BINARY_HEAP_ENTRY_CMP_HPP
namespace __gnu_pbds
{
namespace detail
{
/// Entry compare, primary template.
template<typename _VTp, typename Cmp_Fn, typename _Alloc, bool No_Throw>
struct entry_cmp;
/// Specialization, true.
template<typename _VTp, typename Cmp_Fn, typename _Alloc>
struct entry_cmp<_VTp, Cmp_Fn, _Alloc, true>
{
/// Compare.
typedef Cmp_Fn type;
};
/// Specialization, false.
template<typename _VTp, typename Cmp_Fn, typename _Alloc>
struct entry_cmp<_VTp, Cmp_Fn, _Alloc, false>
{
private:
typedef rebind_traits<_Alloc, _VTp> __rebind_v;
public:
typedef typename __rebind_v::const_pointer entry;
/// Compare plus entry.
struct type : public Cmp_Fn
{
type() { }
type(const Cmp_Fn& other) : Cmp_Fn(other) { }
bool
operator()(entry lhs, entry rhs) const
{ return Cmp_Fn::operator()(*lhs, *rhs); }
};
};
} // namespace detail
} // namespace __gnu_pbds
#endif // #ifndef PB_DS_BINARY_HEAP_ENTRY_CMP_HPP
__gnu_pbds
GNU extensions for policy-based data structures for public use.
Definition: assoc_container.hpp:52
__gnu_pbds::detail::rebind_traits
Consistent API for accessing allocator-related types.
Definition: types_traits.hpp:140
__gnu_pbds::detail::entry_cmp
Entry compare, primary template.
Definition: entry_cmp.hpp:50
__gnu_pbds::detail::entry_cmp< _VTp, Cmp_Fn, _Alloc, true >::type
Cmp_Fn type
Compare.
Definition: entry_cmp.hpp:57