[#BloombergLP-bslalg-ArrayPrimitives-defaultConstruct-01]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/ArrayPrimitives.adoc[ArrayPrimitives]::defaultConstruct
:relfileprefix: ../../../
:mrdocs:

Construct each of the elements of an array of the specified `numElements` of the parameterized `TARGET_TYPE` starting at the specified `begin` address by value‐initialization. If the (template parameter) `ALLOCATOR` type is derived from `bslma::Allocator` and `TARGET_TYPE` supports `bslma` allocators, then the specified `allocator` is passed to each `TARGET_TYPE` default constructor call. The behavior is undefined unless the output array contains at least `numElements` uninitialized elements after `begin`. If a `TARGET_TYPE` constructor throws an exception during this operation, then the destructor is called on any newly‐constructed elements, leaving the output array in an uninitialized state.

== Synopsis

Declared in `<bslalg_arrayprimitives.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TARGET_TYPE>
static
void
defaultConstruct(
    TARGET_TYPE* begin,
    xref:BloombergLP/bslalg/ArrayPrimitives/size_type.adoc[size_type] numElements,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* allocator);
----


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