[#BloombergLP-bdlsb-MemOutStreamBuf-2constructor-07]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsb.adoc[bdlsb]::xref:BloombergLP/bdlsb/MemOutStreamBuf.adoc[MemOutStreamBuf]::MemOutStreamBuf
:relfileprefix: ../../../
:mrdocs:

Create an empty stream buffer with sufficient initial capacity to accommodate up to the specified `numElements` characters without subsequent reallocation. If `numElements == 0`, an implementation‐defined initial capacity is used. Optionally specify a `basicAllocator` used to supply memory. If `basicAllocator` is 0, the currently installed default allocator is used.

== Synopsis

Declared in `<bdlsb_memoutstreambuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
MemOutStreamBuf(
    std::size_t numElements,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0);
----


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