[#BloombergLP-bslfmt-MockParseContext-begin]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::xref:BloombergLP/bslfmt/MockParseContext.adoc[MockParseContext]::begin
:relfileprefix: ../../../
:mrdocs:

Return an iterator to the beginning of the format specification&period;

== Synopsis

Declared in `&lt;bslfmt&lowbar;mockparsecontext&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:BloombergLP/bslfmt/MockParseContext/const_iterator.adoc[MockParseContext&lt;t&lowbar;CHAR&gt;::const&lowbar;iterator]
begin() const noexcept;
----

== Return Value

iterator to the beginning of the format specification


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