[#bsl-vectorBase-068-begin-08]
= xref:bsl.adoc[bsl]::xref:bsl/vectorBase-068.adoc[vectorBase&lt;double&gt;]::begin
:relfileprefix: ../../
:mrdocs:

Return an iterator providing modifiable access to the first element in this vector, or the past&hyphen;the&hyphen;end iterator if this vector is empty&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;vector&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:bsl/vectorBase-068/iterator.adoc[iterator]
begin() noexcept;
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