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This function returns the first buffer in a buffer sequence, or a buffer of size zero if the buffer sequence has no elements.
This function returns the first buffer in a buffer sequence, or a buffer of size zero if the buffer sequence has no elements.
[link beast.ref.boost__beast__buffers_prefix `buffers_prefix`]
[link beast.ref.boost__beast__buffers_prefix `buffers_prefix`]
This function returns a new buffer or buffer sequence which represents a prefix of the original buffers.
This function returns a new buffer or buffer sequence which represents a prefix of the original buffers.
[link beast.ref.boost__beast__buffers_prefix_view `buffers_prefix_view`]
[link beast.ref.boost__beast__buffers_prefix_view `buffers_prefix_view`]
This class represents the buffer sequence formed from a prefix of an existing buffer sequence. This is the type of buffer returned by [link beast.ref.boost__beast__buffers_prefix `buffers_prefix`].
This class represents the buffer sequence formed from a prefix of an existing buffer sequence. This is the type of buffer returned by [link beast.ref.boost__beast__buffers_prefix `buffers_prefix`].
[link beast.ref.boost__beast__buffers_range `buffers_range`] [link beast.ref.boost__beast__buffers_range_ref `buffers_range_ref`]
[link beast.ref.boost__beast__buffers_range `buffers_range`] [link beast.ref.boost__beast__buffers_range_ref `buffers_range_ref`]
This function returns an iterable range representing the passed buffer sequence. The values obtained when iterating the range will always be a constant buffer, unless the underlying buffer sequence is mutable, in which case the value obtained when iterating will be a mutable buffer. It is intended as a notational convenience when writing a ['range-for] statement over a buffer sequence.

The function [link beast.ref.boost__beast__buffers_range_ref `buffers_range`] maintains a copy of the buffer sequence, while [link beast.ref.boost__beast__buffers_range_ref `buffers_range_ref`] maintains a reference (in this case, the caller must ensure that the lifetime of the referenced buffer sequence extends until the range object is destroyed).
This function returns an iterable range representing the passed buffer sequence. The values obtained when iterating the range will always be a constant buffer, unless the underlying buffer sequence is mutable, in which case the value obtained when iterating will be a mutable buffer. It is intended as a notational convenience when writing a ['range-for] statement over a buffer sequence.

The function [link beast.ref.boost__beast__buffers_range_ref `buffers_range`] maintains a copy of the buffer sequence, while [link beast.ref.boost__beast__buffers_range_ref `buffers_range_ref`] maintains a reference (in this case, the caller must ensure that the lifetime of the referenced buffer sequence extends until the range object is destroyed).
[link beast.ref.boost__beast__buffers_suffix `buffers_suffix`]
[link beast.ref.boost__beast__buffers_suffix `buffers_suffix`]
This class wraps the underlying memory of an existing buffer sequence and presents a suffix of the original sequence. The length of the suffix may be progressively shortened. This lets callers work with sequential increments of a buffer sequence.
This class wraps the underlying memory of an existing buffer sequence and presents a suffix of the original sequence. The length of the suffix may be progressively shortened. This lets callers work with sequential increments of a buffer sequence.
[link beast.ref.boost__beast__buffers_to_string `buffers_to_string`]
[link beast.ref.boost__beast__buffers_to_string `buffers_to_string`]
This function converts a buffer sequence to a `std::string`. It can be used for diagnostic purposes and tests.
This function converts a buffer sequence to a `std::string`. It can be used for diagnostic purposes and tests.
[link beast.ref.boost__beast__buffer_ref `buffer_ref`] [link beast.ref.boost__beast__ref `ref`]
[link beast.ref.boost__beast__buffer_ref `buffer_ref`] [link beast.ref.boost__beast__ref `ref`]
This function converts a beast buffer, that is to be passed by reference, into a buffer reference, that can be passed by value into asio functions.

It implements the __DynamicBuffer__v2__ concept.
This function converts a beast buffer, that is to be passed by reference, into a buffer reference, that can be passed by value into asio functions.

It implements the __DynamicBuffer__v2__ concept.
The __DynamicBuffer__ concept introduced in __Asio__ models a buffer sequence which supports an owning, resizable range. Beast provides this set of additional implementations of the dynamic buffer concept:
The __DynamicBuffer__ concept introduced in __Asio__ models a buffer sequence which supports an owning, resizable range. Beast provides this set of additional implementations of the dynamic buffer concept:
Dynamic Buffer Implementations
Dynamic Buffer Implementations
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Description
[link beast.ref.boost__beast__buffers_adaptor `buffers_adaptor`]
[link beast.ref.boost__beast__buffers_adaptor `buffers_adaptor`]
This wrapper adapts any __MutableBufferSequence__ into a __DynamicBuffer__ with an upper limit on the total size of the input and output areas equal to the size of the underlying mutable buffer sequence. The implementation does not perform heap allocations.
This wrapper adapts any __MutableBufferSequence__ into a __DynamicBuffer__ with an upper limit on the total size of the input and output areas equal to the size of the underlying mutable buffer sequence. The implementation does not perform heap allocations.
[link beast.ref.boost__beast__flat_buffer `flat_buffer`] [link beast.ref.boost__beast__basic_flat_buffer `basic_flat_buffer`]
[link beast.ref.boost__beast__flat_buffer `flat_buffer`] [link beast.ref.boost__beast__basic_flat_buffer `basic_flat_buffer`]
Guarantees that input and output areas are buffer sequences with length one. Upon construction an optional upper limit to the total size of the input and output areas may be set. The basic container is an [@https://en.cppreference.com/w/cpp/named_req/AllocatorAwareContainer [*AllocatorAwareContainer]].
Guarantees that input and output areas are buffer sequences with length one. Upon construction an optional upper limit to the total size of the input and output areas may be set. The basic container is an [@https://en.cppreference.com/w/cpp/named_req/AllocatorAwareContainer [*AllocatorAwareContainer]].
[link beast.ref.boost__beast__multi_buffer `multi_buffer`] [link beast.ref.boost__beast__basic_multi_buffer `basic_multi_buffer`]
[link beast.ref.boost__beast__multi_buffer `multi_buffer`] [link beast.ref.boost__beast__basic_multi_buffer `basic_multi_buffer`]
Uses a sequence of one or more character arrays of varying sizes. Additional character array objects are appended to the sequence to accommodate changes in the size of the character sequence. The basic container is an [@https://en.cppreference.com/w/cpp/named_req/AllocatorAwareContainer [*AllocatorAwareContainer]].
Uses a sequence of one or more character arrays of varying sizes. Additional character array objects are appended to the sequence to accommodate changes in the size of the character sequence. The basic container is an [@https://en.cppreference.com/w/cpp/named_req/AllocatorAwareContainer [*AllocatorAwareContainer]].
[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__flat_static_buffer `flat_static_buffer`] [link beast.ref.boost__beast__flat_static_buffer_base `flat_static_buffer_base`]
Guarantees that input and output areas are buffer sequences with length one. Provides the facilities of a dynamic buffer, subject to an upper limit placed on the total size of the input and output areas defined by a constexpr template parameter. The storage for the sequences are kept in the class; the implementation does not perform heap allocations.
Guarantees that input and output areas are buffer sequences with length one. Provides the facilities of a dynamic buffer, subject to an upper limit placed on the total size of the input and output areas defined by a constexpr template parameter. The storage for the sequences are kept in the class; the implementation does not perform heap allocations.
[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__static_buffer `static_buffer`] [link beast.ref.boost__beast__static_buffer_base `static_buffer_base`]
Provides the facilities of a circular dynamic buffer. subject to an upper limit placed on the total size of the input and output areas defined by a constexpr template parameter. The implementation never moves memory during buffer operations. The storage for the sequences are kept in the class; the implementation does not perform heap allocations.
Provides the facilities of a circular dynamic buffer. subject to an upper limit placed on the total size of the input and output areas defined by a constexpr template parameter. The implementation never moves memory during buffer operations. The storage for the sequences are kept in the class; the implementation does not perform heap allocations.
The buffers provide different guarantees regarding the allocated memory; stable means that existing mutable and const_buffers obtained by calling `data` or `prepare`, will remain valid.
The buffers provide different guarantees regarding the allocated memory; stable means that existing mutable and const_buffers obtained by calling `data` or `prepare`, will remain valid.
Note that copies always requires a new call to `data` and `prepare`.`
Note that copies always requires a new call to `data` and `prepare`.`
Memory stability
Memory stability
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Key English Chinese (Simplified Han script) Actions
[link beast.ref.boost__beast__buffers_type `buffers_type`]
[link beast.ref.boost__beast__buffers_type `buffers_type`]
This metafunction is used to determine the type of iterator used by a particular buffer sequence.
This metafunction is used to determine the type of iterator used by a particular buffer sequence.
Buffer Output Streams
Buffer Output Streams
[link beast.ref.boost__beast__is_const_buffer_sequence `is_const_buffer_sequence`]
[link beast.ref.boost__beast__is_const_buffer_sequence `is_const_buffer_sequence`]
[link beast.ref.boost__beast__make_printable `make_printable`]
[link beast.ref.boost__beast__make_printable `make_printable`]
This function wraps a __ConstBufferSequence__ so it may be used with `operator<<` and `std::ostream`.
This function wraps a __ConstBufferSequence__ so it may be used with `operator<<` and `std::ostream`.
[link beast.ref.boost__beast__ostream `ostream`]
[link beast.ref.boost__beast__ostream `ostream`]
This function returns a `std::ostream` which wraps a dynamic buffer. Characters sent to the stream using `operator<<` are stored in the dynamic buffer.
This function returns a `std::ostream` which wraps a dynamic buffer. Characters sent to the stream using `operator<<` are stored in the dynamic buffer.
These type traits are provided to facilitate writing compile-time metafunctions which operate on buffers:
These type traits are provided to facilitate writing compile-time metafunctions which operate on buffers:
This metafunction is used to determine the underlying buffer type for a list of buffer sequence. The equivalent type of the alias will vary depending on the template type argument.
This metafunction is used to determine the underlying buffer type for a list of buffer sequence. The equivalent type of the alias will vary depending on the template type argument.
[link beast.ref.boost__beast__buffers_iterator_type `buffers_iterator_type`]
[link beast.ref.boost__beast__buffers_iterator_type `buffers_iterator_type`]
1-2
1-2
may invalidate
may invalidate
These two functions facilitate buffer interoperability with standard output streams.
These two functions facilitate buffer interoperability with standard output streams.
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dynamic
 
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1
 
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yes
 
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invalidating
 
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static
 
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no
 
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Description
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Buffer Algorithms and Types
Buffer Algorithms and Types
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Description
Description
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Name
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Name
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Buffer Algorithms and Types
Buffer Algorithms and Types

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String information

Key
115
Source string description
type: table cell
Unit identifier
58932
Source string location
string ID 115
String age
06/05/2026
Last updated
06/05/2026
Source string age
06/05/2026
Translation file QuickBook file
doc/qbk/03_core/5_buffers_zh_Hans.qbk, string 28