[#bsl-vectorBase-0aa9-begin-0a] = xref:bsl.adoc[bsl]::xref:bsl/vectorBase-0aa9.adoc[vectorBase<unsigned long long>]::begin :relfileprefix: ../../ :mrdocs: Return an iterator providing non‐modifiable access to the first element in this vector, and the past‐the‐end iterator if this vector is empty. == Synopsis Declared in `<bslstl_vector.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- xref:bsl/vectorBase-0aa9/const_iterator.adoc[const_iterator] begin() const noexcept; ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#