[#bsl-vectorBase-0e9-front-0b]
= xref:bsl.adoc[bsl]::xref:bsl/vectorBase-0e9.adoc[vectorBase<unsigned long>]::front
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:mrdocs:

Return a reference providing modifiable access to the first element in this vector. The behavior is undefined unless this vector is not empty.

== Synopsis

Declared in `<bslstl_vector.h>`

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xref:bsl/vectorBase-0e9/reference.adoc[reference]
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