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type: table cell
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP request. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
63/2010 · 201

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A [*FieldsWriter] provides a algorithm to obtain a sequence of buffers representing the complete serialized HTTP/1 header for a set of fields. The implementation constructs an instance of this type when needed, and calls into it once to retrieve the buffers.
[*FieldsWriter] 提供了一种算法，用于获取表示一组字段的完整序列化 HTTP/1 标头的缓冲区序列。实现会在需要时构造该类型的实例，并仅调用一次以获取缓冲区。
Associated Types
关联类型
* __FieldsWriter__
* __FieldsWriter__
Requirements
要求
These requirements may undergo non-backward compatible
这些要求可能会发生非向后兼容的变更
In this table:
在下表中：
* `W` denotes a type that meets the requirements of [*FieldsWriter].
* `F` denotes a __Fields__ where
* `W` 表示满足 [*FieldsWriter] 要求的类型。
* `F` 表示 __Fields__，其中
* `a` is a value of type `W`.
* `f` is a value of type `F`.
* `v` is an `unsigned` value representing the HTTP version.
* `c` is an `unsigned` representing the HTTP status-code.
* `m` is a value of type [link beast.ref.boost__beast__http__verb `verb`].
* `a` 是类型为 `W` 的值。
* `f` 是类型为 `F` 的值。
* `v` 是表示 HTTP 版本的 `unsigned` 值。
* `c` 是表示 HTTP 状态码的 `unsigned` 值。
* `m` 是 [link beast.ref.boost__beast__http__verb `verb`] 类型的值。
Valid expressions
有效表达式
expression
表达式
type
类型
semantics, pre/post-conditions
语义，前置/后置条件
39
`W::const_buffers_type`
 
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `W::get`.
一种满足 __ConstBufferSequence__ 要求的类型。该类型是 `W::get` 返回的缓冲区类型。
`W{f,v,m}`
`W{f,v,m}`
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP request. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
实现调用该构造函数，用于表示正在序列化的字段属于 HTTP 请求。该对象 `f` 的生命周期保证在 `W` 销毁之后才会结束。
`W{f,v,c}`
`W{f,v,c}`
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP response. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
实现调用该构造函数，用于表示正在序列化的字段属于 HTTP 响应。该对象 `f` 的生命周期保证在 `W` 销毁之后才会结束。
`W{f}`
`W{f}`
The implementation calls this constructor to indicate that the fields being serialized form part of a chunked encoding final-chunk trailer. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
实现调用该构造函数，用于表示正在序列化的字段属于分块传输编码的最终块尾部。该对象 `f` 的生命周期保证在 `W` 销毁之后才会结束。
`a.get()`
`a.get()`
Called once after construction, this function returns a constant buffer sequence containing the serialized representation of the HTTP request or response including the final carriage return linefeed sequence (`"\r\n"`).

Copies may be made of the returned sequence, but the underlying memory is still owned by the writer. The implementation will destroy all copies of the buffer sequence before destroying `a`.
该函数在构造后仅被调用一次，用于返回一个常量缓冲区序列。该序列包含 HTTP 请求或响应的序列化表示，以及最终的换行回车序列（"\r\n"）。

返回的序列可以被拷贝，但底层内存仍由该写入器持有。实现会在销毁该对象 `a` 之前，销毁该缓冲区序列的所有拷贝。
Exemplar
示例
Models
模型
* [link beast.ref.boost__beast__http__basic_fields.writer `basic_fields::writer`]
* [link beast.ref.boost__beast__http__basic_fields.writer `basic_fields::writer`]
English Chinese (Simplified Han script) Actions
Requirements
要求
`W{f}`
`W{f}`
FieldsWriter
字段写入器
* `W` denotes a type that meets the requirements of [*FieldsWriter].
* `F` denotes a __Fields__ where
* `W` 表示满足 [*FieldsWriter] 要求的类型。
* `F` 表示 __Fields__，其中
* `a` is a value of type `W`.
* `f` is a value of type `F`.
* `v` is an `unsigned` value representing the HTTP version.
* `c` is an `unsigned` representing the HTTP status-code.
* `m` is a value of type [link beast.ref.boost__beast__http__verb `verb`].
* `a` 是类型为 `W` 的值。
* `f` 是类型为 `F` 的值。
* `v` 是表示 HTTP 版本的 `unsigned` 值。
* `c` 是表示 HTTP 状态码的 `unsigned` 值。
* `m` 是 [link beast.ref.boost__beast__http__verb `verb`] 类型的值。
Valid expressions
有效表达式
`W{f,v,m}`
`W{f,v,m}`
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP request. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
实现调用该构造函数，用于表示正在序列化的字段属于 HTTP 请求。该对象 `f` 的生命周期保证在 `W` 销毁之后才会结束。
In this table:
在下表中：
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `W::get`.
一种满足 __ConstBufferSequence__ 要求的类型。该类型是 `W::get` 返回的缓冲区类型。
`W{f,v,c}`
`W{f,v,c}`
expression
表达式
type
类型
semantics, pre/post-conditions
语义，前置/后置条件
`a.get()`
`a.get()`
Exemplar
示例
Models
模型
* [link beast.ref.boost__beast__http__basic_fields.writer `basic_fields::writer`]
* [link beast.ref.boost__beast__http__basic_fields.writer `basic_fields::writer`]
* __FieldsWriter__
* __FieldsWriter__
Associated Types
关联类型
A [*FieldsWriter] provides a algorithm to obtain a sequence of buffers representing the complete serialized HTTP/1 header for a set of fields. The implementation constructs an instance of this type when needed, and calls into it once to retrieve the buffers.
[*FieldsWriter] 提供了一种算法，用于获取表示一组字段的完整序列化 HTTP/1 标头的缓冲区序列。实现会在需要时构造该类型的实例，并仅调用一次以获取缓冲区。
These requirements may undergo non-backward compatible
这些要求可能会发生非向后兼容的变更
Called once after construction, this function returns a constant buffer sequence containing the serialized representation of the HTTP request or response including the final carriage return linefeed sequence (`"\r\n"`).

Copies may be made of the returned sequence, but the underlying memory is still owned by the writer. The implementation will destroy all copies of the buffer sequence before destroying `a`.
该函数在构造后仅被调用一次，用于返回一个常量缓冲区序列。该序列包含 HTTP 请求或响应的序列化表示，以及最终的换行回车序列（"\r\n"）。

返回的序列可以被拷贝，但底层内存仍由该写入器持有。实现会在销毁该对象 `a` 之前，销毁该缓冲区序列的所有拷贝。

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User avatar Bstran

Translation changed
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP request. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP request. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.实现调用该构造函数，用于表示正在序列化的字段属于 HTTP 请求。该对象 `f` 的生命周期保证在 `W` 销毁之后才会结束。
06/18/2026
User avatar admin

String added in the repository
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP request. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
The implementation calls this constructor to indicate that the fields being serialized form part of an HTTP request. The lifetime of `f` is guaranteed to end no earlier than after the `W` is destroyed.
06/05/2026
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Glossary

English Chinese (Simplified Han script)
No related strings found in the glossary.

String information

Source string description
type: table cell
Unit identifier
58703
Source string location
string ID 39
String age
06/05/2026
Last updated
06/26/2026
Source string age
06/05/2026
Translation file QuickBook file
doc/qbk/07_concepts/FieldsWriter_zh_Hans.qbk, string 17