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Added efficient move construction of `boost::unordered_flat_(map|set)` from
Added efficient move construction of `boost::unordered_flat_(map|set)` from实现高效双向移动构造（从
06/05/2026
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with serial and parallel variants.
with serial and parallel variants.提供串行与并行两种执行模式。
06/05/2026
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Added `[c]visit_while` operations to concurrent containers,
Added为并发容器新增 `[c]visit_while` operations to concurrent containers,操作，
06/05/2026
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Added `boost::concurrent_flat_set`.
Added新增 `boost::concurrent_flat_set`. 。
06/05/2026
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Release 1.84.0 - Major update
Release版本 1.84.0 - Major update重大更新
06/05/2026
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Fixed bug in the `const` version of `unordered_multimap::find(k, hash, eq)` ({github-pr-url}/238[PR#238^]).
Fixed bug in the `const` version of修复 `unordered_multimap::find(k, hash, eq)` ({github-pr-url}的 `const` 版本中的缺陷(https://github.com/boostorg/unordered/pull/238[PR#238^]).。
06/05/2026
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Fixed support for allocators with `explicit` copy constructors ({github-pr-url}/234[PR#234^]).
Fixed support for allocators with `explicit` copy constructors ({github-pr-url}修复对含 `explicit` 复制构造函数的分配器的支持(https://github.com/boostorg/unordered/pull/234[PR#234^]).。
06/05/2026
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Optimized `emplace()` for `k,v` arguments on map containers to delay constructing the object until it is certain that an element should be inserted. This optimization happens when the map's `key_type` is move constructible or when the `k` argument is a `key_type`.
Optimized优化 map 容器的 `emplace()` for对 `k,v` arguments on map containers to delay constructing the object until it is certain that an element should be inserted. This optimization happens when the map's `key_type` is move constructible or when the `k` argument is a参数的处理：将对象构造延迟到确认需要插入元素时执行。此优化在映射的 `key_type` 可移动构造或 `k` 参数为 `key_type`. 类型时生效。
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Optimized `emplace()` for a `value_type` or `init_type` (if applicable) argument to bypass creating an intermediate object. The argument is already the same type as the would-be intermediate object.
Optimized优化 `emplace()` for a对 `value_type` or或 `init_type` (if applicable) argument to bypass creating an intermediate object. The argument is already the same type as the would-be intermediate object.（如适用）参数的实现，使其无需创建中间对象即可直接处理参数，因为该参数类型与待构造的中间对象类型完全相同。
06/05/2026
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Release 1.85.0
Release版本 1.85.0
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Added Visual Studio Natvis framework custom visualizations for containers and iterators. This works for all containers with an allocator using raw pointers. In this release, containers and iterators are not supported if their allocator uses fancy pointers. This may be addressed in later releases.
Added为容器和迭代器添加 Visual Studio Natvis framework custom visualizations for containers and iterators. This works for all containers with an allocator using raw pointers. In this release, containers and iterators are not supported if their allocator uses fancy pointers. This may be addressed in later releases.框架的自定义可视化功能。此功能适用于所有使用原始指针分配器的容器。在此版本中，若容器或迭代器的分配器使用花式指针，则暂不支持该功能，此问题可能在后续版本中解决。
06/05/2026
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Avalanching hash functions must now be marked via an `is_avalanching` typedef with an embedded `value` constant set to `true` (typically, defining `is_avalanching` as `std::true_type`). `using is_avalanching = void` is deprecated but allowed for backwards compatibility.
Avalanching hash functions must now be marked via an `is_avalanching` typedef with an embedded `value` constant set to `true` (typically, defining雪崩哈希函数现在必须通过内嵌 `value` 常量设为 `true` 的 `is_avalanching` typedef 来标记（通常将 `is_avalanching` as定义为 `std::true_type`).）。 `using is_avalanching = void` is deprecated but allowed for backwards compatibility.已被弃用，但为了向后兼容性仍予保留。
06/05/2026
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Equipped open-addressing and concurrent containers to internally calculate and provide statistical metrics affected by the quality of the hash function. This functionality is enabled by the global macro `BOOST_UNORDERED_ENABLE_STATS`.
Equipped open-addressing and concurrent containers to internally calculate and provide statistical metrics affected by the quality of the hash function. This functionality is enabled by the global macro为开放寻址容器与并发容器增设内部统计功能，可计算并提供受哈希函数质量影响的统计指标。通过全局宏 `BOOST_UNORDERED_ENABLE_STATS`. 启用。
06/05/2026
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Added container `pmr` aliases when header `<memory_resource>` is available. The alias `boost::unordered::pmr::[container]` refers to `boost::unordered::[container]` with a `std::pmr::polymorphic_allocator` allocator type.
Added container `pmr` aliases when header `<memory_resource>` is available. The alias `boost::unordered::pmr::[container]` refers to `boost::unordered::[container]` with a `std::pmr::polymorphic_allocator` allocator type.当头文件 `<memory_resource>` 可用时，新增容器 `pmr` 别名。 `boost::unordered::pmr::[container]` 别名指向使用 `std::pmr::polymorphic_allocator` 分配器类型的 `boost::unordered::[container]` 。</memory_resource>
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Release 1.86.0
Release版本 1.86.0
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Allowed non-copyable callables to be passed to the `std::initializer_list` overloads of `insert_{and|or}_[c]visit` for concurrent containers, by internally passing a `std::reference_wrapper` of the callable to the iterator-pair overloads.
Allowed non-copyable callables to be passed to the `std::initializer_list` overloads of `insert_{and|or}_[c]visit` for concurrent containers, by internally passing a `std::reference_wrapper` of the callable to the iterator-pair overloads.通过内部将可调用对象的 `std::reference_wrapper` 传递给迭代器对重载，现允许向并发容器的 `insert_{and|or}_[c]visit` 的 `std::initializer_list` 重载传递不可复制的可调用对象。
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({github-pr-url}/277[PR#277^]).
({github-pr-url}https://github.com/boostorg/unordered/pull/277[PR#277^]).。
06/05/2026
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Fixed `std::initializer_list` assignment issues for open-addressing containers
Fixed修复开放寻址容器中 `std::initializer_list` assignment issues for open-addressing containers的 赋值问题
06/05/2026
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Added GDB pretty-printers for all containers and iterators. For a container with an allocator that uses fancy pointers, these only work if the proper pretty-printer is written for the fancy pointer type itself.
Added GDB pretty-printers for all containers and iterators. For a container with an allocator that uses fancy pointers, these only work if the proper pretty-printer is written for the fancy pointer type itself.为所有容器和迭代器添加 GDB 美化打印器。对于使用花式指针分配器的容器，需先为花式指针类型编写对应的美化打印器方可正常使用。
06/05/2026
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In Visual Studio Natvis, supported any container with an allocator that uses fancy pointers. This applies to any fancy pointer type, as long as the proper Natvis customization point "Intrinsic" functions are written for the fancy pointer type.
In在 Visual Studio Natvis, supported any container with an allocator that uses fancy pointers. This applies to any fancy pointer type, as long as the proper Natvis customization point "Intrinsic" functions are written for the fancy pointer type. 中，现支持使用带花式指针分配器的任意容器。只要为花式指针类型编写了相应的 Natvis 自定义“Intrinsic”函数，即可适用于所有花式指针类型。
06/05/2026

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