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	English [#concurrent_flat_set] 23/10000 · 23
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	English Class Template concurrent_flat_set 34/10000 · 34
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	English :idprefix: concurrent_flat_set_ 31/10000 · 31
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	English `boost::concurrent_flat_set` — A hash table that stores unique values and allows for concurrent element insertion, erasure, lookup and access without external synchronization mechanisms. 186/10000 · 186
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	English Even though it acts as a container, `boost::concurrent_flat_set` does not model the standard C++ https://en.cppreference.com/w/cpp/named_req/Container[Container^] concept. In particular, iterators and associated operations (`begin`, `end`, etc.) are not provided. Element access is done through user-provided _visitation functions_ that are passed to `concurrent_flat_set` operations where they are executed internally in a controlled fashion. Such visitation-based API allows for low-contention concurrent usage scenarios. 523/10000 · 523
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	English The internal data structure of `boost::concurrent_flat_set` is similar to that of `boost::unordered_flat_set`. As a result of its using open-addressing techniques, `value_type` must be move-constructible and pointer stability is not kept under rehashing. 254/10000 · 254
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	English Synopsis 8/10000 · 8
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	English --- 3/10000 · 3
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	English Description 11/10000 · 11
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	English Template Parameters 21/10000 · 21
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	English _Key_ 5/10000 · 5
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	English `Key` must be https://en.cppreference.com/w/cpp/named_req/MoveInsertable[MoveInsertable^] into the container 108/10000 · 108
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	English and https://en.cppreference.com/w/cpp/named_req/Erasable[Erasable^] from the container. 87/10000 · 87
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	English _Hash_ 6/10000 · 6
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	English A unary function object type that acts a hash function for a `Key`. It takes a single argument of type `Key` and returns a value of type `std::size_t`. 151/10000 · 151
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	English _Pred_ 6/10000 · 6
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	English A binary function object that induces an equivalence relation on values of type `Key`. It takes two arguments of type `Key` and returns a value of type `bool`. 159/10000 · 159
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	English _Allocator_ 11/10000 · 11
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	English An allocator whose value type is the same as the table's value type. 68/10000 · 68
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	English `std::allocator_traits<Allocator>::pointer` and `std::allocator_traits<Allocator>::const_pointer` must be convertible to/from `value_type` and `const value_type`, respectively. 178/10000 · 178

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