258 lines
12 KiB
C++
258 lines
12 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// Class template for accumulable unordered_maps handled by Geant4 analysis
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//
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// Author: Ivana Hrivnacova, IJCLab IN2P3/CNRS, 19/07/2024
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#ifndef G4AccUnorderedMap_h
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#define G4AccUnorderedMap_h 1
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#include "G4VAccumulable.hh"
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#include "G4MergeMode.hh"
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#include "globals.hh"
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#include <unordered_map>
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template <class Key,
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class T,
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class Hash = std::hash<Key>,
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class KeyEqual = std::equal_to<Key>,
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class Allocator = std::allocator<std::pair<const Key, T>>>
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class G4AccUnorderedMap : public G4VAccumulable
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{
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public:
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// ctors to be supported
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// (https://en.cppreference.com/w/cpp/container/unordered_map/unordered_map)
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//
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// Default constructor (1) - Constructs an empty container.
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// unordered_map();
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//
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// Constructor (2) - Constructs an empty container.
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// explicit unordered_map( size_type bucket_count,
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// const Hash& hash = Hash(),
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// const KeyEqual& equal = KeyEqual(),
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// const Allocator& alloc = Allocator() );
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//
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// Constructor (3) - Constructs an empty container.
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// unordered_map( size_type bucket_count,
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// const Allocator& alloc )
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// : unordered_map(bucket_count, Hash(), KeyEqual(), alloc) {}
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//
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// Constructor (4) (since C++14)
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// Constructs empty container.
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// unordered_map( size_type bucket_count,
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// const Hash& hash,
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// const Allocator& alloc )
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// : unordered_map(bucket_count, hash, KeyEqual(), alloc) {}
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//
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// Constructor (5) (since C++11)
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// Constructs empty container.
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// explicit unordered_map( const Allocator& alloc );
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//
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// (6,7,8) (since C++11)
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// Constructs the container with the contents of the range
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// - skipped
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//
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// (9) (since C++11) - Copy constructor.
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// unordered_map( const unordered_map& other );
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//
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// (10) (since C++11) - Copy constructor with provided allocator
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// unordered_map( const unordered_map& other, const Allocator& alloc );
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//
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// (11) (since C++11) - Move constructor.
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// unordered_map( unordered_map&& other );
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//
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// (12) (since C++11) - Move constructor with provided allocator
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// unordered_map( unordered_map&& other, const Allocator& alloc );
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//
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// (13) (since C++11) - Initializer-list constructor.
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// Constructs the container with the contents of the initializer list init
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// unordered_map( std::initializer_list<value_type> init,
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// size_type bucket_count = /* implementation-defined */,
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// const Hash& hash = Hash(),
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// const KeyEqual& equal = KeyEqual(),
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// const Allocator& alloc = Allocator() );
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//
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// (14) (since C++11) - Initializer-list constructor.
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// Constructs the container with the contents of the initializer list init
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// unordered_map( std::initializer_list<value_type> init,
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// size_type bucket_count,
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// const Allocator& alloc )
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// : unordered_map(init, bucket_count,
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// Hash(), KeyEqual(), alloc) {}
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//
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// (15) (since C++14) - Initializer-list constructor.
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// unordered_map( std::initializer_list<value_type> init,
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// size_type bucket_count,
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// const Hash& hash,
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// const Allocator& alloc )
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// : unordered_map(init, bucket_count,
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// hash, KeyEqual(), alloc) {}
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//
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// (16,17) (since C++23)
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// Constructs the container with the contents of rg.
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// - skipped
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// Default constructor (1)
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// Constructs an empty container with all defaults.
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G4AccUnorderedMap(const G4String& name = "",
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G4MergeMode mergeMode = G4MergeMode::kAddition);
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// Constructor (2)
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// Constructs an empty container with the given bucket_count
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G4AccUnorderedMap(std::size_t bucket_count,
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G4MergeMode mergeMode = G4MergeMode::kAddition,
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const Allocator& alloc = Allocator());
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// Constructor (2) with name
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// Constructs an empty container with the given bucket_count and name
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G4AccUnorderedMap(const G4String& name,
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std::size_t bucket_count,
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G4MergeMode mergeMode = G4MergeMode::kAddition,
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const Allocator& alloc = Allocator());
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// Constructor (3)
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// Constructs an empty container with the given bucket_count and allocator
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G4AccUnorderedMap(std::size_t bucket_count,
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const Allocator& alloc,
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G4MergeMode mergeMode = G4MergeMode::kAddition);
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// Constructor (3) with name
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// Constructs an empty container with the given bucket_count, allocator and name
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G4AccUnorderedMap(const G4String& name,
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std::size_t bucket_count,
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const Allocator& alloc,
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G4MergeMode mergeMode = G4MergeMode::kAddition);
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// Constructor (4)
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// Constructs an empty container with the given bucket_count, allocator and hash
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G4AccUnorderedMap(std::size_t bucket_count,
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const Hash& hash,
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const Allocator& alloc,
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G4MergeMode mergeMode = G4MergeMode::kAddition);
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// Constructor (4) with name
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// Constructs an empty container with the given bucket_count, allocator, hash and name
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G4AccUnorderedMap(const G4String& name,
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std::size_t bucket_count,
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const Hash& hash,
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const Allocator& alloc,
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G4MergeMode mergeMode = G4MergeMode::kAddition);
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// Constructor (5)
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// Constructs an empty container with the given allocator alloc.
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G4AccUnorderedMap(const Allocator& alloc,
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G4MergeMode mergeMode = G4MergeMode::kAddition);
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// Constructor (5) with name
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// Constructs an empty container with the given allocator alloc and name
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G4AccUnorderedMap(const G4String& name,
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const Allocator& alloc,
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G4MergeMode mergeMode = G4MergeMode::kAddition);
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// Constructor (13)
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// Constructs the container with the contents of the initializer list init.
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G4AccUnorderedMap(std::initializer_list<std::pair<const Key,T>> init,
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G4MergeMode mergeMode = G4MergeMode::kAddition,
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std::size_t bucket_count = 0,
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const Hash& hash = Hash(),
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const KeyEqual& equal = KeyEqual(),
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const Allocator& alloc = Allocator() );
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// Constructor (13) with name
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// Constructs the container with the contents of the initializer list init.
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G4AccUnorderedMap(const G4String& name,
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std::initializer_list<std::pair<const Key,T>> init,
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G4MergeMode mergeMode = G4MergeMode::kAddition,
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std::size_t bucket_count = 0,
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const Hash& hash = Hash(),
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const KeyEqual& equal = KeyEqual(),
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const Allocator& alloc = Allocator() );
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// Copy constructor
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G4AccUnorderedMap(const G4AccUnorderedMap& rhs) = default;
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G4AccUnorderedMap(const G4AccUnorderedMap& rhs, const Allocator& allocator);
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// Move constructor
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G4AccUnorderedMap(G4AccUnorderedMap&& rhs) = default;
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G4AccUnorderedMap(G4AccUnorderedMap&& rhs, const Allocator& allocator);
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// Destructor
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~G4AccUnorderedMap() override = default;
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// std::unordered_map functions, operators
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// operator []
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inline T& operator[](const Key& key) { return fUMap[key]; }
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inline T& operator[](Key&& key) { return fUMap[std::move(key)]; }
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// at
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inline T& at(const Key& key) { return fUMap[key]; }
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inline const T& at(const Key& key ) const { return fUMap[key]; }
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// size
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::size_type size() const { return fUMap.size(); }
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// begin, cbegin
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::iterator begin() { return fUMap.begin(); }
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::const_iterator begin() const { return fUMap.begin(); }
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::const_iterator cbegin() const { return fUMap.cbegin(); }
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// end, cend
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::iterator end() { return fUMap.end(); }
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::const_iterator end() const { return fUMap.end(); }
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::const_iterator cend() const { return fUMap.cend(); }
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// clear
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inline void clear() { fUMap.clear(); }
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// insert
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inline std::pair<typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::iterator, bool> insert(const T& value) { return fUMap.insert(value); }
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template< class P >
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inline std::pair<typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::iterator, bool> insert( P&& value ) { return fUMap.insert(std::move(value)); }
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inline std::pair<typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::iterator, bool> insert( T&& value ) { return fUMap.insert(std::move(value)); }
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// find
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::iterator find( const Key& key ) { return fUMap.find(key); }
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inline typename std::unordered_map<Key, T, Hash, KeyEqual, Allocator>::const_iterator find( const Key& key ) const { return fUMap.find(key); }
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// Methods
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void Merge(const G4VAccumulable& other) final;
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void Reset() final;
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void Print(G4PrintOptions options = G4PrintOptions()) const final;
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void SetMergeMode(G4MergeMode value) final;
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void SetInitValue(const T& value);
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// Get methods
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G4AccType GetType() const final { return G4AccType::kUnorderedMap; }
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std::unordered_map<Key, T, Hash, KeyEqual, Allocator>& GetUnorderedMap() { return fUMap; }
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const std::unordered_map<Key, T, Hash, KeyEqual, Allocator>& GetUnorderedMap() const { return fUMap; }
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private:
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// Data members
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std::unordered_map<Key, T, Hash, KeyEqual, Allocator> fUMap;
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T fInitValue = 0;
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G4MergeFunction<T> fMergeFunction;
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};
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// inline functions
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#include "G4AccUnorderedMap.icc"
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#endif
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