[#DataStream-m_read_pos]
= xref:DataStream.adoc[DataStream]::m_read_pos
:relfileprefix: ../
:mrdocs:

Offset of the first unread byte within vch.

== Synopsis

Declared in `<streams.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
vector_type::size_type m_read_pos = {0};
----


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