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Using the type checks with `static_assert` on function or class template types will provide users with helpful error messages and prevent undefined behaviors. This example shows how a template function which writes to a synchronous stream may check its argument:
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An alias for the type of object returned by `get_executor`.
用于表示 `get_executor` 返回的对象类型的别名。
[link beast.ref.boost__beast__has_get_executor `has_get_executor`]
[link beast.ref.boost__beast__has_get_executor `has_get_executor`]
Determine if the `get_executor` member function is present.
用于判断是否存在 `get_executor` 成员函数。
[link beast.ref.boost__beast__is_async_read_stream `is_async_read_stream`]
[link beast.ref.boost__beast__is_async_read_stream `is_async_read_stream`]
Determine if a type meets the requirements of __AsyncReadStream__.
用于判断某个类型是否符合 __AsyncReadStream__ 概念的要求。
[link beast.ref.boost__beast__is_async_stream `is_async_stream`]
[link beast.ref.boost__beast__is_async_stream `is_async_stream`]
Determine if a type meets the requirements of both __AsyncReadStream__ and __AsyncWriteStream__.
用于判断某个类型是否同时符合 __AsyncReadStream__ 与 __AsyncWriteStream__ 概念的要求。
[link beast.ref.boost__beast__is_async_write_stream `is_async_write_stream`]
[link beast.ref.boost__beast__is_async_write_stream `is_async_write_stream`]
Determine if a type meets the requirements of __AsyncWriteStream__.
用于判断某个类型是否符合 __AsyncWriteStream__ 概念的要求。
[link beast.ref.boost__beast__is_sync_read_stream `is_sync_read_stream`]
[link beast.ref.boost__beast__is_sync_read_stream `is_sync_read_stream`]
Determine if a type meets the requirements of __SyncReadStream__.
用于判断某个类型是否符合 __SyncReadStream__ 概念的要求。
[link beast.ref.boost__beast__is_sync_stream `is_sync_stream`]
[link beast.ref.boost__beast__is_sync_stream `is_sync_stream`]
Determine if a type meets the requirements of both __SyncReadStream__ and __SyncWriteStream__.
用于判断某个类型是否同时符合 __SyncReadStream__ 与 __SyncWriteStream__ 概念的要求。
[link beast.ref.boost__beast__is_sync_write_stream `is_sync_write_stream`]
[link beast.ref.boost__beast__is_sync_write_stream `is_sync_write_stream`]
Determine if a type meets the requirements of __SyncWriteStream__.
用于判断某个类型是否符合 __SyncWriteStream__ 概念的要求。
Using the type checks with `static_assert` on function or class template types will provide users with helpful error messages and prevent undefined behaviors. This example shows how a template function which writes to a synchronous stream may check its argument:
在函数或类模板类型上使用 `static_assert` 配合这些类型检查，可以给用户提供更清晰的错误信息，同时避免未定义行为。以下示例展示一个用于向同步流写入数据的模板函数，该示例演示如何对其参数类型进行检查：
English Chinese (Simplified Han script) Actions
[link beast.ref.boost__beast__is_async_write_stream `is_async_write_stream`]
[link beast.ref.boost__beast__is_async_write_stream `is_async_write_stream`]
Using the type checks with `static_assert` on function or class template types will provide users with helpful error messages and prevent undefined behaviors. This example shows how a template function which writes to a synchronous stream may check its argument:
在函数或类模板类型上使用 `static_assert` 配合这些类型检查，可以给用户提供更清晰的错误信息，同时避免未定义行为。以下示例展示一个用于向同步流写入数据的模板函数，该示例演示如何对其参数类型进行检查：
__SyncWriteStream__
__SyncWriteStream__
Type Traits and Metafunctions
类型特征与元函数
Determine if a type meets the requirements of __AsyncReadStream__.
用于判断某个类型是否符合 __AsyncReadStream__ 概念的要求。
__SyncReadStream__
__SyncReadStream__
__SyncStream__
__SyncStream__
[link beast.ref.boost__beast__has_get_executor `has_get_executor`]
[link beast.ref.boost__beast__has_get_executor `has_get_executor`]
Streams
流类型
An alias for the type of object returned by `get_executor`.
用于表示 `get_executor` 返回的对象类型的别名。
Stream Concepts
流概念
Supports buffer-oriented asynchronous writes.
用于支持面向缓冲区的异步写入操作。
A stream supporting buffer-oriented asynchronous reads and writes.
一种流类型，用于支持面向缓冲区的异步读写操作。
A __Stream__ is a communication channel where data is reliably transferred as an ordered sequence of bytes. Streams are either synchronous or asynchronous, and may allow reading, writing, or both. Note that a particular type may model more than one concept. For example, the networking types __socket__ and __ssl_stream__ support both __SyncStream__ and __AsyncStream__. All stream algorithms in Beast are declared as template functions using these concepts:
__Stream__ 是一种通信通道，数据以有序字节序列的形式在其中可靠传输。流可分为同步流与异步流，可支持读操作、写操作或两者同时支持。需要注意的是，某个具体类型可能同时符合多个概念模型。例如，网络库中的 __socket__ 与 __ssl_stream__ 类型同时支持 __SyncStream__ 与 __AsyncStream__ 两种概念。Beast 中的所有流算法均以模板函数形式声明，并使用这些概念进行约束：
[link beast.ref.boost__beast__is_sync_write_stream `is_sync_write_stream`]
[link beast.ref.boost__beast__is_sync_write_stream `is_sync_write_stream`]
Determine if a type meets the requirements of __SyncWriteStream__.
用于判断某个类型是否符合 __SyncWriteStream__ 概念的要求。

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User avatar Bstran

Translation changed
Using the type checks with `static_assert` on function or class template types will provide users with helpful error messages and prevent undefined behaviors. This example shows how a template function which writes to a synchronous stream may check its argument:
Using the type checks with `static_assert` on function or class template types will provide users with helpful error messages and prevent undefined behaviors. This example shows how a template function which writes to a synchronous stream may check its argument:在函数或类模板类型上使用 `static_assert` 配合这些类型检查，可以给用户提供更清晰的错误信息，同时避免未定义行为。以下示例展示一个用于向同步流写入数据的模板函数，该示例演示如何对其参数类型进行检查：
06/12/2026
User avatar admin

String added in the repository
Using the type checks with `static_assert` on function or class template types will provide users with helpful error messages and prevent undefined behaviors. This example shows how a template function which writes to a synchronous stream may check its argument:
Using the type checks with `static_assert` on function or class template types will provide users with helpful error messages and prevent undefined behaviors. This example shows how a template function which writes to a synchronous stream may check its argument:
06/05/2026
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String information

Source string description
type: paragraph
Unit identifier
57968
Source string location
string ID 109
String age
06/05/2026
Last updated
06/26/2026
Source string age
06/05/2026
Translation file QuickBook file
doc/qbk/03_core/2_streams_zh_Hans.qbk, string 38