[#BloombergLP-bslalg-DequePrimitives-01-insertAndMoveToFront-0e]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/DequePrimitives-01.adoc[DequePrimitives]::insertAndMoveToFront
:relfileprefix: ../../../
:mrdocs:

Insert the specified `numElements` in the range `[first .. last)]` at the specified `position`, by moving the elements in the range `[fromBegin .. position)]` backward by `numElements` position. Pass the specified `allocator` to the copy constructor if appropriate. Load into the specified `toBegin` an iterator to the end of the data after insertion (i.e., `fromBegin ‐ numElements`). The behavior is undefined unless `fromBegin ‐ numElements` is a valid iterator (i.e., the block pointer array holds enough room before the `fromBefore` position to insert `numElements`).

== Synopsis

Declared in `<bslalg_dequeprimitives.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class FWD_ITER,
    class SENTINEL,
    class ALLOCATOR>
static
void
insertAndMoveToFront(
    xref:BloombergLP/bslalg/DequePrimitives-01/Iterator.adoc[Iterator]* toBegin,
    xref:BloombergLP/bslalg/DequePrimitives-01/Iterator.adoc[Iterator] fromBegin,
    xref:BloombergLP/bslalg/DequePrimitives-01/Iterator.adoc[Iterator] position,
    FWD_ITER first,
    SENTINEL last,
    xref:BloombergLP/bslalg/DequePrimitives-01/size_type.adoc[size_type] numElements,
    ALLOCATOR allocator);
----


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