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type: table cell
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Key English Actions
`T`
This type represents the memory associated with the input sequence.
51
`D::mutable_buffers_type`
`U`
This type represents the memory associated with the output sequence.
`c.size()`
51
`std::size_t`
Returns the size, in bytes, of the input sequence.
`c.max_size()`
Returns the permitted maximum of the sum of the sizes of the input sequence and output sequence.
`c.capacity()`
Returns the maximum sum of the sizes of the input sequence and output sequence that the dynamic buffer can hold without requiring reallocation.
`c.data()`
Returns a constant buffer sequence u that represents the memory associated with the input sequence, and where `buffer_size(u) == size()`.
`a.prepare(n)`
Returns a mutable buffer sequence u representing the output sequence, and where `buffer_size(u) == n`. The dynamic buffer reallocates memory as required. All constant or mutable buffer sequences previously obtained using `data()` or `prepare()` are invalidated.

Throws: `length_error` if `size() + n` exceeds `max_size()`.
`a.commit(n)`
Appends `n` bytes from the start of the output sequence to the end of the input sequence. The remainder of the output sequence is discarded. If `n` is greater than the size of the output sequence, the entire output sequence is appended to the input sequence. All constant or mutable buffer sequences previously obtained using `data()` or `prepare()` are invalidated.
`a.consume(n)`
Removes `n` bytes from beginning of the input sequence. If `n` is greater than the size of the input sequence, the entire input sequence is removed. All constant or mutable buffer sequences previously obtained using `data()` or `prepare()` are invalidated.
Models
* [link beast.ref.boost__beast__basic_flat_buffer `basic_flat_buffer`]
* [link beast.ref.boost__beast__basic_multi_buffer `basic_multi_buffer`]
* [link beast.ref.boost__beast__flat_buffer `flat_buffer`]
* [link beast.ref.boost__beast__flat_static_buffer `flat_static_buffer`]
* [link beast.ref.boost__beast__flat_static_buffer_base `flat_static_buffer_base`]
* [link beast.ref.boost__beast__static_buffer `static_buffer`]
* [link beast.ref.boost__beast__static_buffer_base `static_buffer_base`]
* [link beast.ref.boost__beast__multi_buffer `multi_buffer`]

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String added in the repository
Returns a mutable buffer sequence u representing the output sequence, and where `buffer_size(u) == n`. The dynamic buffer reallocates memory as required. All constant or mutable buffer sequences previously obtained using `data()` or `prepare()` are invalidated.

Throws: `length_error` if `size() + n` exceeds `max_size()`.
Returns a mutable buffer sequence u representing the output sequence, and where `buffer_size(u) == n`. The dynamic buffer reallocates memory as required. All constant or mutable buffer sequences previously obtained using `data()` or `prepare()` are invalidated.

Throws: `length_error` if `size() + n` exceeds `max_size()`.
06/05/2026
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Glossary

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String information

Component
Boost Beast Translation (zh_Hans)/Doc / Qbk / 07 Concepts / Dynamicbuffer (qbk)
Source string description
type: table cell
Flags
read-only
Unit identifier
56353
Source string location
string ID 51
String age
06/05/2026
Last updated
06/05/2026
Source string age
06/05/2026
Translation file QuickBook file
doc/qbk/07_concepts/DynamicBuffer.qbk, string 31