[#bsl-vector-027-front-01] = xref:bsl.adoc[bsl]::xref:bsl/vector-027.adoc[vector<MetricSampleGroup>]::front :relfileprefix: ../../ :mrdocs: `front` overloads == Synopses Declared in `<bslstl_vector.h>` Return a reference providing modifiable access to the first element in this vector. The behavior is undefined unless this vector is not empty. [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- xref:bsl/vectorBase-06a.adoc[reference] xref:bsl/vector-027/front-0d.adoc[front](); ---- [.small]#xref:bsl/vector-027/front-0d.adoc[_» more..._]# Return a reference providing non‐modifiable access to the first element in this vector. The behavior is undefined unless this vector is not empty. [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- xref:bsl/vectorBase-06a.adoc[const_reference] xref:bsl/vector-027/front-0a.adoc[front]() const; ---- [.small]#xref:bsl/vector-027/front-0a.adoc[_» more..._]# [.small]#Created with https://www.mrdocs.com[MrDocs]#