[#DataStream-begin-05]
= xref:DataStream.adoc[DataStream]::begin
:relfileprefix: ../
:mrdocs:

Return an iterator to the first unread element&period;

== Synopsis

Declared in `&lt;streams&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:DataStream/iterator.adoc[iterator]
begin();
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== Return Value

An iterator to the first unread element&period;


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