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link:../../../../type_traits/index.html[aligned storage^] to store the types. This changes the way the allocator is used to construct nodes. It used to construct the node with two calls to the allocator's `construct` method - once for the pointers and once for the value. It now constructs the node with a single call to construct and then constructs the value using in place construction.
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Release 1.39.0
版本 1.39.0
{svn-ticket-url}/2756[Ticket 2756^]: Avoid a warning
https://svn.boost.org/trac/boost/ticket/2756[问题单 2756] ：规避
on Visual {cpp} 2009.
Visual C{plus}{plus} 2009 的编译警告。
Some other minor internal changes to the implementation, tests and
对实现、测试及文档进行其他少量内部调整。
documentation.
（文档）
Avoid an unnecessary copy in `operator[]`.
避免 `operator[]` 中不必要的复制。
{svn-ticket-url}/2975[Ticket 2975^]: Fix length of
https://svn.boost.org/trac/boost/ticket/2975[问题单 2975] ：修正
prime number list.
质数列表长度。
Release 1.38.0
版本 1.38.0
Use link:../../../../core/swap.html[`boost::swap`^].
使用 link:../../../../core/swap.html[`boost::swap`] 。
{svn-ticket-url}/2237[Ticket 2237^]:
https://svn.boost.org/trac/boost/ticket/2237[问题单 2237] ：
Document that the equality and inequality operators are undefined for two objects if their equality predicates aren't equivalent. Thanks to Daniel Krügler.
补充说明：如果两个对象的相等谓词不等价，则它们的相等与不等运算符的行为未定义。感谢 Daniel Krügler。
{svn-ticket-url}/1710[Ticket 1710^]:
https://svn.boost.org/trac/boost/ticket/1710[问题单 1710]：
Use a larger prime number list. Thanks to Thorsten Ottosen and Hervé Brönnimann.
采用更长的质数列表。感谢 Thorsten Ottosen 与 Hervé Brönnimann 的贡献。
Use
使用
link:../../../../type_traits/index.html[aligned storage^] to store the types. This changes the way the allocator is used to construct nodes. It used to construct the node with two calls to the allocator's `construct` method - once for the pointers and once for the value. It now constructs the node with a single call to construct and then constructs the value using in place construction.
link:../../../../type_traits/index.html[对齐存储] 来存储类型。这改变了利用分配器构造节点的方式：原先通过两次调用分配器的 `construct` 方法分别构造指针和值，现在仅通过单次调用构造节点，随后采用就地构造方式构建值对象。
Add support for {cpp}0x initializer lists where they're available (currently
在可用时支持 C{plus}{plus}0x 初始化列表（当前
only g++ 4.4 in {cpp}0x mode).
仅 g{plus}{plus} 4.4 的 C{plus}{plus}0x 模式）。
Release 1.37.0
版本 1.37.0
Rename overload of `emplace` with hint, to `emplace_hint` as specified in
将带提示的 `emplace` 重载更名为 `emplace++_++hint` 。
http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2008/n2691.pdf[n2691^].
（根据 http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2008/n2691.pdf[n2691^] 规范）
Provide forwarding headers at `<boost/unordered/unordered_map_fwd.hpp>` and
在 `<boost unordered="" unordered_map_fwd.hpp="">` 与</boost>
`<boost/unordered/unordered_set_fwd.hpp>`.
`<boost unordered="" unordered_set_fwd.hpp="">` 路径下提供前向声明头文件。</boost>
Move all the implementation inside `boost/unordered`, to assist
将所有实现移至 `boost/unordered` 内，以支持
modularization and hopefully make it easier to track Release subversion.
模块化并便于跟踪发布版本。
Release 1.36.0
版本 1.36.0
First official release.
首次正式发布。
Rearrange the internals.
调整内部结构。
Move semantics - full support when rvalue references are available, emulated
移动语义：在支持右值引用的环境中提供完整支持，否则
using a cut down version of the Adobe move library when they are not.
使用精简版 Adobe 移动库进行模拟实现。
Emplace support when rvalue references and variadic template are available.
支持右值引用和变参模板时提供就地构造支持。
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Avoid gcc's `-Wfloat-equal` warning.
规避 gcc 的 `-Wfloat-equal` 编译警告。
{svn-ticket-url}/6784[Ticket 6784^]:
https://svn.boost.org/trac/boost/ticket/6784[问题单 6784] ：
{svn-ticket-url}/6190[Ticket 6190^]:
https://svn.boost.org/trac/boost/ticket/6190[问题单 6190] ：
Avoid gcc's `-Wshadow` warning.
规避 gcc 的 `-Wshadow` 编译警告。
Release 1.49.0
版本 1.49.0
{svn-ticket-url}/3966[Ticket 3966^]:
https://svn.boost.org/trac/boost/ticket/3966[问题单 3966] ：
Release 1.42.0
版本 1.42.0
{svn-ticket-url}/2908[Ticket 2908^],
https://svn.boost.org/trac/boost/ticket/2908[问题单 2908] 、
Better configuration for {cpp}0x features when the headers aren't available.
对 C{plus}{plus}0x 特性提供优化方案，以应对头文件不可用的情况。
Release 1.39.0
版本 1.39.0
{svn-ticket-url}/2756[Ticket 2756^]: Avoid a warning
https://svn.boost.org/trac/boost/ticket/2756[问题单 2756] ：规避
on Visual {cpp} 2009.
Visual C{plus}{plus} 2009 的编译警告。
Some other minor internal changes to the implementation, tests and
对实现、测试及文档进行其他少量内部调整。
documentation.
（文档）
Document that the equality and inequality operators are undefined for two objects if their equality predicates aren't equivalent. Thanks to Daniel Krügler.
补充说明：如果两个对象的相等谓词不等价，则它们的相等与不等运算符的行为未定义。感谢 Daniel Krügler。
link:../../../../type_traits/index.html[aligned storage^] to store the types. This changes the way the allocator is used to construct nodes. It used to construct the node with two calls to the allocator's `construct` method - once for the pointers and once for the value. It now constructs the node with a single call to construct and then constructs the value using in place construction.
link:../../../../type_traits/index.html[对齐存储] 来存储类型。这改变了利用分配器构造节点的方式：原先通过两次调用分配器的 `construct` 方法分别构造指针和值，现在仅通过单次调用构造节点，随后采用就地构造方式构建值对象。
only g++ 4.4 in {cpp}0x mode).
仅 g{plus}{plus} 4.4 的 C{plus}{plus}0x 模式）。
Rename overload of `emplace` with hint, to `emplace_hint` as specified in
将带提示的 `emplace` 重载更名为 `emplace++_++hint` 。
http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2008/n2691.pdf[n2691^].
（根据 http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2008/n2691.pdf[n2691^] 规范）
Move semantics - full support when rvalue references are available, emulated
移动语义：在支持右值引用的环境中提供完整支持，否则
using a cut down version of the Adobe move library when they are not.
使用精简版 Adobe 移动库进行模拟实现。
`boost::hash_is_avalanching` in `<boost/container_hash/hash_is_avalanching.hpp>`. Use that header directly instead. `<boost/unordered/hash_traits.hpp>` will be removed in the future.
在 <boost container_hash="" hash_is_avalanching.hpp=""> 中对 boost::hash_is_avalanching 的使用声明。请直接使用该头文件代替。<boost unordered="" hash_traits.hpp=""> 将在未来被移除。</boost></boost>
allows for efficient removal and retrieval of an element via move construction.
支持通过移动构造机制高效移除并检索指定元素。
allow for visitation of an element right after insertion (by contrast, `insert_or_visit(x, f)` only visits the element if insertion did _not_ take place).
支持在插入元素后立即对其进行访问（而 `insert_or_visit(x, f)` 仅在未执行插入时才访问元素）。
Made visitation exclusive-locked within certain
在特定 `boost::concurrent_flat_set` 操作中启用独占锁访问机制，
`boost::concurrent_flat_set` operations to allow for safe mutable modification of elements ({github-pr-url}/265[PR#265^]).
以支持对元素进行安全的可变修改(https://github.com/boostorg/unordered/pull/265[PR#265])。
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。
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.
为容器和迭代器添加 Visual Studio Natvis 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。
Extended heterogeneous lookup to more member functions as specified in
将异构查找功能扩展至更多成员函数
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2363r5.html[P2363].
（根据https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2363r5.html[P2363] 规范） 。

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link:../../../../type_traits/index.html[aligned storage^] to store the types. This changes the way the allocator is used to construct nodes. It used to construct the node with two calls to the allocator's `construct` method - once for the pointers and once for the value. It now constructs the node with a single call to construct and then constructs the value using in place construction.
link:../../../../type_traits/index.html[aligned storage^] to store the types. This changes the way the allocator is used to construct nodes. It used to construct the node with two calls to the allocator's `construct` method - once for the pointers and once for the value. It now constructs the node with a single call to construct and then constructs the value using in place construction.对齐存储] 来存储类型。这改变了利用分配器构造节点的方式：原先通过两次调用分配器的 `construct` 方法分别构造指针和值，现在仅通过单次调用构造节点，随后采用就地构造方式构建值对象。
06/05/2026
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link:../../../../type_traits/index.html[aligned storage^] to store the types. This changes the way the allocator is used to construct nodes. It used to construct the node with two calls to the allocator's `construct` method - once for the pointers and once for the value. It now constructs the node with a single call to construct and then constructs the value using in place construction.
link:../../../../type_traits/index.html[aligned storage^] to store the types. This changes the way the allocator is used to construct nodes. It used to construct the node with two calls to the allocator's `construct` method - once for the pointers and once for the value. It now constructs the node with a single call to construct and then constructs the value using in place construction.
06/05/2026
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English Chinese (Simplified Han script)
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Flags
safe-html, strict-same
Unit identifier
50031
Source string location
:427
String age
06/05/2026
Last updated
06/06/2026
Source string age
06/05/2026
Translation file AsciiDoc file
doc/modules/ROOT/pages/changes_zh_Hans.adoc, string 274