[#bsl-deque-0c-emplace_front]
= xref:bsl.adoc[bsl]::xref:bsl/deque-0c.adoc[deque]::emplace_front
:relfileprefix: ../../
:mrdocs:

Prepend to the front of this deque a newly created `value_type` object, constructed by forwarding `get_allocator()` (if required) and the specified (variable number of) `arguments` to the corresponding constructor of `value_type`. Return a reference providing modifiable access to the inserted element. If an exception is thrown (other than by the move constructor of a non‐copy‐insertable `value_type`), this method has no effect. This method requires that the (template parameter) `VALUE_TYPE` be `move‐insertable` into this deque and `emplace‐constructible` from `arguments` (see {Requirements on `VALUE_TYPE`}).

== Synopsis

Declared in `<bslstl_deque.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class... Args>
xref:bsl/deque-0c/reference.adoc[deque<VALUE_TYPE, ALLOCATOR>::reference]
emplace_front(Args&&... arguments);
----


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