Boost C++ Libraries

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basic_multi_buffer::prepare

Returns a mutable buffer sequence representing writable bytes.

Synopsis

mutable_buffers_type
prepare(
    size_type n);

Description

Returns a mutable buffer sequence representing the writable bytes containing exactly n bytes of storage. Memory may be reallocated as needed.

All buffer sequences previously obtained using prepare are invalidated. Buffer sequences previously obtained using data remain valid.

Parameters

Name	Description
`n`	The desired number of bytes in the returned buffer sequence.

Exceptions

Type	Thrown On
`std::length_error`	if `size()` + n exceeds `max_size()`.

Exception Safety

Strong guarantee.