[#bsl-unordered_map-021]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_map-02b.adoc[unordered_map<KEY, VALUE, bsl::hash<KEY>, bsl::equal_to<KEY>, ALLOCATOR>]
:relfileprefix: ../
:mrdocs:

Deduce the template parameters `KEY` and `VALUE` from the `value_type` of the initializer_list supplied to the constructor of `unordered_map`. Deduce the template parameter `ALLOCATOR` from the other parameters supplied to the constructor of `unordered_map`. This deduction guide does not participate unless the supplied allocator meets the requirements of a standard allocator.

== Synopsis

Declared in `<bslstl_unorderedmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class KEY,
    class VALUE,
    class ALLOCATOR>
requires bsl::IsStdAllocator_v<ALLOCATOR>
xref:bsl/unordered_map-02b.adoc[unordered_map<KEY, VALUE, bsl::hash<KEY>, bsl::equal_to<KEY>, ALLOCATOR>](
    std::initializer_list<bsl::pair<KEY const, VALUE>>,
    ALLOCATOR) -> xref:bsl/unordered_map-02b.adoc[unordered_map<KEY, VALUE, bsl::hash<KEY>, bsl::equal_to<KEY>, ALLOCATOR>];
----


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