[#bsl-set-0d-begin-055]
= xref:bsl.adoc[bsl]::xref:bsl/set-0d.adoc[set]::begin
:relfileprefix: ../../
:mrdocs:

Return an iterator providing modifiable access to the first `value_type` object in the ordered sequence of `value_type` objects maintained by this set, or the `end` iterator if this set is empty.

== Synopsis

Declared in `<bslstl_set.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/set-0d/iterator.adoc[set<KEY, COMPARATOR, ALLOCATOR>::iterator]
begin() noexcept;
----


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