[#bsl-vector-009]
= xref:bsl.adoc[bsl]::xref:bsl/vector-00d.adoc[vector<VALUE>]
:relfileprefix: ../
:mrdocs:

Deduce the template parameter `VALUE` from the corresponding parameter supplied to the constructor of `vector`. This deduction guide does not participate unless the supplied allocator is convertible to `bsl::allocator<VALUE>`.

== Synopsis

Declared in `<bslstl_vector.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class SIZE_TYPE,
    class VALUE,
    class ALLOC,
    class DEFAULT_ALLOCATOR = xref:bsl/allocator-0df.adoc[bsl::allocator<VALUE>]>
requires bsl::is_convertible_v<
                SIZE_TYPE,
                typename bsl::allocator_traits<DEFAULT_ALLOCATOR>::size_type> && bsl::is_convertible_v<ALLOC *, DEFAULT_ALLOCATOR>
xref:bsl/vector-00d.adoc[vector<VALUE>](
    SIZE_TYPE,
    VALUE,
    ALLOC*) -> xref:bsl/vector-00d.adoc[vector<VALUE>];
----


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