[#bsl-set-09]
= xref:bsl.adoc[bsl]::xref:bsl/set-0d.adoc[set<KEY, COMPARATOR>]
:relfileprefix: ../
:mrdocs:

Deduce the template parameter `KEY` from the `value_type` of the initializer_list supplied to the constructor of `set`. Deduce the template parameter `COMPARATOR` from the other parameter passed to the constructor. This deduction guide does not participate unless the specified `ALLOC` is convertible to `bsl::allocator<KEY>`.

== Synopsis

Declared in `<bslstl_set.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class KEY,
    class COMPARATOR,
    class ALLOC,
    class DEFAULT_ALLOCATOR = xref:bsl/allocator-0df.adoc[bsl::allocator<KEY>]>
requires bsl::is_convertible_v<ALLOC *, DEFAULT_ALLOCATOR>
xref:bsl/set-0d.adoc[set<KEY, COMPARATOR>](
    std::initializer_list<KEY>,
    COMPARATOR,
    ALLOC*) -> xref:bsl/set-0d.adoc[set<KEY, COMPARATOR>];
----


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