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throws an exception, it can overwrite the hash and equality functions while leaving the existing elements in place. This would mean that the function objects wouldn't match the container elements, so elements might be in the wrong bucket and equivalent elements would be incorrectly handled.
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Small standards compliance fixes:
局部标准符合性修正：
** `noexpect` specs for `swap` free functions. ** Add missing `insert(P&&)` methods.
** `swap` 自由函数的 `noexcept` 规范。** 补充缺失的 `insert(P&&)` 方法。
Release 1.64.0
版本 1.64.0
Initial support for new {cpp}17 member functions:
初步支持 C{plus}{plus}17 新成员函数：
`insert_or_assign` and `try_emplace` in `unordered_map`,
`unordered_map` 中的 `insert_or_assign` 和 `try_emplace`，
Initial support for `merge` and `extract`.
初步支持 `merge` 与 `extract` 操作。
Does not include transferring nodes between `unordered_map` and `unordered_multimap` or between `unordered_set` and `unordered_multiset` yet. That will hopefully be in the next version of Boost.
目前尚未支持在 `unordered_map` 与 `unordered_multimap` 之间，或 `unordered_set` 与 `unordered_multiset` 之间转移节点。该功能有望在下一版 Boost 中提供。
Release 1.63.0
版本 1.63.0
Check hint iterator in `insert`/`emplace_hint`.
检查 `insert` / `emplace_hint` 操作中提示迭代器的有效性。
Fix some warnings, mostly in the tests.
修复部分警告（主要出现在测试中）。
Manually write out `emplace_args` for small numbers of arguments -
为参数数量较少的情况手动编写 `emplace_args` 代码，
should make template error messages a little more bearable.
以减轻模板错误消息的负担。
Remove superfluous use of `boost::forward` in emplace arguments,
移除 emplace 参数中多余的 `boost::forward` 调用，
which fixes emplacing string literals in old versions of Visual {cpp}.
以修复旧版 Visual C{plus}{plus} 中字面量字符串的就地构造问题。
Fix an exception safety issue in assignment. If bucket allocation
修复赋值操作中的异常安全问题。若桶分配过程
throws an exception, it can overwrite the hash and equality functions while leaving the existing elements in place. This would mean that the function objects wouldn't match the container elements, so elements might be in the wrong bucket and equivalent elements would be incorrectly handled.
抛出异常，可能导致哈希函数与相等性判断函数被覆盖，而现有元素仍保留在容器中。这将造成函数对象与容器元素不匹配，进而引发元素错置桶位及等价元素处理错误的问题。
Various reference documentation improvements.
多项参考文档改进。
Better allocator support ({svn-ticket-url}/12459[#12459^]).
增强的分配器支持(https://svn.boost.org/trac/boost/ticket/12459[#12459])。
Make the no argument constructors implicit.
将无参构造函数改为隐式声明。
Implement missing allocator aware constructors.
实现缺失的分配器感知构造函数。
Fix assigning the hash/key equality functions for empty containers.
修复空容器在设置哈希函数与键值相等性判断函数时存在的问题。
Remove unary/binary_function from the examples in the documentation.
从文档示例中移除 unary/binary_function。
They are removed in {cpp}17.
这两者在 C{plus}{plus}17 中已被移除。
Support 10 constructor arguments in emplace. It was meant to support up to 10
emplace 方法现支持 10 个构造参数。其设计本应支持最多 10 个参数，
arguments, but an off by one error in the preprocessor code meant it only supported up to 9.
但由于预处理代码中存在差一错误，仅支持 9 个参数。
Release 1.62.0
版本 1.62.0
Remove use of deprecated `boost::iterator`.
停止使用已弃用的 `boost::iterator` 组件 。
Remove `BOOST_NO_STD_DISTANCE` workaround.
移除 `BOOST_NO_STD_DISTANCE` 的兼容性代码。
Remove `BOOST_UNORDERED_DEPRECATED_EQUALITY` warning.
移除 `BOOST_UNORDERED_DEPRECATED_EQUALITY` 警告。
Simpler implementation of assignment, fixes an exception safety issue
采用更简化的赋值操作实现，修复了
for `unordered_multiset` and `unordered_multimap`. Might be a little slower.
`unordered_multiset` 与 `unordered_multimap` 的异常安全问题，但性能可能略有下降。
English Chinese (Simplified Han script) Actions
Remove iterators' inheritance from `std::iterator`, which is
移除迭代器对 `std::iterator` 的继承
deprecated in {cpp}17, thanks to Daniela Engert ({github-pr-url}/7[PR#7^]).
（该基类在 C{plus}{plus}17 中已弃用），感谢 Daniela Engert的贡献(https://github.com/boostorg/unordered/pull/7[PR#7])。
Stop using `BOOST_DEDUCED_TYPENAME`.
停止使用 `BOOST_DEDUCED_TYPENAME` 。
Add deprecated attributes to `quick_erase` and `erase_return_void`.
向 `quick_erase` 和 `erase_return_void` 添加弃用属性。
I really will remove them in a future version this time.
本次确认将在未来版本中移除这两个接口。
** `noexpect` specs for `swap` free functions. ** Add missing `insert(P&&)` methods.
** `swap` 自由函数的 `noexcept` 规范。** 补充缺失的 `insert(P&&)` 方法。
Release 1.64.0
版本 1.64.0
Initial support for new {cpp}17 member functions:
初步支持 C{plus}{plus}17 新成员函数：
`insert_or_assign` and `try_emplace` in `unordered_map`,
`unordered_map` 中的 `insert_or_assign` 和 `try_emplace`，
Initial support for `merge` and `extract`.
初步支持 `merge` 与 `extract` 操作。
Does not include transferring nodes between `unordered_map` and `unordered_multimap` or between `unordered_set` and `unordered_multiset` yet. That will hopefully be in the next version of Boost.
目前尚未支持在 `unordered_map` 与 `unordered_multimap` 之间，或 `unordered_set` 与 `unordered_multiset` 之间转移节点。该功能有望在下一版 Boost 中提供。
Release 1.63.0
版本 1.63.0
Check hint iterator in `insert`/`emplace_hint`.
检查 `insert` / `emplace_hint` 操作中提示迭代器的有效性。
Fix some warnings, mostly in the tests.
修复部分警告（主要出现在测试中）。
Fix an exception safety issue in assignment. If bucket allocation
修复赋值操作中的异常安全问题。若桶分配过程
throws an exception, it can overwrite the hash and equality functions while leaving the existing elements in place. This would mean that the function objects wouldn't match the container elements, so elements might be in the wrong bucket and equivalent elements would be incorrectly handled.
抛出异常，可能导致哈希函数与相等性判断函数被覆盖，而现有元素仍保留在容器中。这将造成函数对象与容器元素不匹配，进而引发元素错置桶位及等价元素处理错误的问题。
They are removed in {cpp}17.
这两者在 C{plus}{plus}17 中已被移除。
Support 10 constructor arguments in emplace. It was meant to support up to 10
emplace 方法现支持 10 个构造参数。其设计本应支持最多 10 个参数，
arguments, but an off by one error in the preprocessor code meant it only supported up to 9.
但由于预处理代码中存在差一错误，仅支持 9 个参数。
Release 1.62.0
版本 1.62.0
Remove use of deprecated `boost::iterator`.
停止使用已弃用的 `boost::iterator` 组件 。
for `unordered_multiset` and `unordered_multimap`. Might be a little slower.
`unordered_multiset` 与 `unordered_multimap` 的异常安全问题，但性能可能略有下降。
Stop using return value SFINAE which some older compilers have issues
停止使用返回值SFINAE技术，以避免部分旧版本编译器的
Release 1.58.0
版本 1.58.0
Remove unnecessary template parameter from const iterators.
移除常量迭代器中不必要的模板参数。
Rename private `iterator` typedef in some iterator classes, as it
重命名部分迭代器类中私有的 `iterator` 类型别名，以
Fix the `pointer` typedef in iterators ({svn-ticket-url}/10672[#10672^]).
修复迭代器中 `pointer` 类型定义的问题(https://svn.boost.org/trac/boost/ticket/10672[#10672])。
Fix Coverity warning
修复 Coverity 警告
({github-pr-url}/2[GitHub #2^]).
(https://github.com/boostorg/unordered/pull/2[GitHub #2])。
Fix some shadowed variable warnings ({svn-ticket-url}/9377[#9377^]).
修复部分变量遮蔽警告(https://svn.boost.org/trac/boost/ticket/9377[#9377])。

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throws an exception, it can overwrite the hash and equality functions while leaving the existing elements in place. This would mean that the function objects wouldn't match the container elements, so elements might be in the wrong bucket and equivalent elements would be incorrectly handled.
throws an exception, it can overwrite the hash and equality functions while leaving the existing elements in place. This would mean that the function objects wouldn't match the container elements, so elements might be in the wrong bucket and equivalent elements would be incorrectly handled.抛出异常，可能导致哈希函数与相等性判断函数被覆盖，而现有元素仍保留在容器中。这将造成函数对象与容器元素不匹配，进而引发元素错置桶位及等价元素处理错误的问题。
06/05/2026
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String added in the repository
throws an exception, it can overwrite the hash and equality functions while leaving the existing elements in place. This would mean that the function objects wouldn't match the container elements, so elements might be in the wrong bucket and equivalent elements would be incorrectly handled.
throws an exception, it can overwrite the hash and equality functions while leaving the existing elements in place. This would mean that the function objects wouldn't match the container elements, so elements might be in the wrong bucket and equivalent elements would be incorrectly handled.
06/05/2026
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String information

Flags
safe-html, strict-same
Unit identifier
49880
Source string location
:187
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 123